MEASURES OF PROPER MOTION STARS A : k -., U. 8. A. INTRODUCTION The measures which follow were made with the 4O-inch refractor of the Yerkes Observa- tory in the years 1907 to 1912. The mean results of prior measures with the same instrument in 1897 to 1906 are given in the General Catalogue of Double Stars (Carnegie Institution of Wash- ington, 1906) . These observations have been made in the usual way, fully described heretofore ; and, as far as possible, each star has been measured on at least three nights. The most probable value of one revolution of the micrometer-screw, as found from a large number of observations, is 9" 666; and this value has been used throughout the work at the Yerkes Observatory. The larger number of stars selected for measurement, given as Part II of this volume, are taken from the General Catalogue of Double Stars for reasons which will generally be apparent from the notes and observations cited in that work. By far the greater number of stars given in the General Catalogue as having proper motion are not included here, because the obser- vations there cited are of recent date and further measures are not needed at this time. Many hundred examples of proper motion stars of this kind will be found there, and in that respect this work is supplementary to the General Catalogue. The other list, forming Part I, includes all other stars for which prior observations with the micrometer have been made. Unfortunately the early work in this field is confined to a few observers, the principal ones being Otto Struve, Engelhardt, and Ball. For some of the other stars recent photographic positions have been found, but in most cases the time-interval is too short to give a very accurate value of the relative change. This objection will be removed by observations to be made hereafter. The small stars from Zone 26 of the Oxford Astrographic Catalogue are taken from a list prepared by Mr. G. H. Hamilton of the University Observatory. This list gives the place, proper motion, and photographic magnitude of some fifty stars, principally below the magni- tude limit in Argelander, from plates taken for the most part in 1907 and 1908, the proper motions being derived from a comparison with other plates made a few years earlier. All of these were put on the observing-list and, as far as possible, compared with one or more fainter stars in the field. In a few instances there were no comparison stars within the range of the micrometer. Boss (Astronomical Journal, 604) has called attention to a group of thirty-nine bright stars, principally in Taurus, which appear to have a common proper motion of approximately o"io in the general direction of about 100. These stars were placed on the observing-list, and nearly all of them connected with faint stars in the field for verification of the proper motions given from meridian positions. I have noted three other stars, overlooked by Boss, which evi- dently belong to the group. They are 37 Tauri, 55 Tauri (0^79) and O282. When there are prior measures of any of the comparison stars observed here which seem to warrant a conclusion as to the movement of the proper motion star, the result is given and compared with former values derived from observations with the meridian circle. When the proper motion is small, say a tenth of a second of arc or less, the separate determinations from meridian positions by the leading authorities on this subject are apt to be discordant and incon- f ir*t >f /"/" 960566 ;:: 111 Introduction sistent, in some instances to the extent of having the proper motion star moving in the directio of three different quadrants. When, as usually happens, the measures of small stars in the field give a more or less diffci ent movement from that taken from the star catalogues, it would be manifestly absurd, and i effect begging the whole question, to ascribe the difference to the proper motion of the faint stu There is at this time no relevant evidence of any character that any really faint star, not assc ciated and moving with a larger star, has any sensible proper motion at all. Of course this do< not necessarily refer to all telescopic stars visible in small apertures. Occasionally a star <. faint as the eleventh magnitude has been found with a small motion, but these instances ai rarer that one would expect. For many years I have been hunting for a faint star with son certain proper motion, but so far without success; and the observations of others to this tin- give only negative results. It goes without saying that every star in the heavens, down to tt limit of the largest aperture, must have some proper motion as well as parallax; and it is equal! obvious that the one is as negligible as the other in all observations of relative positions with ar astronomical instrument now in use. Possibly the present series of measures, when followed t a half century or more from this time, may show that some one of the small stars now measure has a real and substantial movement in space. I sincerely hope this may be the result of furth< investigations, but it will require careful and long-continued measures with the micrometer, ar perhaps extended to other near faint stars not yet observed, to establish and confirm the su pected movement. Photography will doubtless contribute to this end, but the exposures w: necessarily have to be much longer than those given to the plates of the several Astrograpli Catalogues in order to reach the desired lower magnitudes. It should be remembered, in dcalir with magnitudes from these catalogues, and with photographic results generally, that the vahn given make the stars from one-half to more than a whole magnitude fainter than the usual visu estimates of experienced observers. All the star places given are for 1880 unless otherwise stated. For the greater conv nience of those who will use the observations hereafter, at the telescope or in the library, tl original places as given in the General Catalogue of Double Stars have been retained, and tl stars in Part I reduced to the same epoch. The total number of measures in the present work about 9500. S. W. B. PART I MEASURES OF PROPER MOTION STARS Bradley 3212 (6. 4... 9. 4) R. A. o" o m 24" Dec!. + 28 22' AandB 1907.772 250^27 I58'.'i3 .788 .791 250.34 250.23 158.15 158.48 1907.78 250.28 158.25 A and CD 1907.772 .788 .791 184^60 184.80 184.95 I53':62 I53.5I 153.44 1907.78 184.78 153.52 C and D (10.8 . . . 10.9) 1907.772 2il!o 3'.'24 .788 208.7 3.27 1907.78 209.8 3.25 We have the following positions of AB : 1853.82 24432 143" 16 411 O2 1863.81 245.50 146.21 2n O2 1884.11 247.70 151.84 in H2 1886.97 248.22 151.89 2n Eng 1895.03 249. 16 154-99 4" Eng 1907.78 250.28 158.25 3ii P These measures give for the corrected proper motion of Bradley 3212: o"403 in i I3?9 This has been given from meridian observations : Auwers o'/4i5 in ii7?7 Porter 0.412 in 115.9 Boss 0.419 in 114.9 Engelhardt does not mention C as double, and it is uncertain whether his measures relate to C or D, these stars being sen- sibly equal in magnitude, and therefore the relative motion is of doubtful value: 1886.97 i82?28 156^41 2n Eng 1894.99 183.42 155.66 2n Eng 1907-78 184.78 153.52 3 n p DM (40) 5 (7. 2.. .10. i) R. A. o" 2 m 38' Decl. + 40 10' A andB 1909.496 280^80 74725 512 SIS 280.90 281.05 73.8i 74.23 1909.50 '.92 No other measures of this. A and P 483 1909.551 .570 81^78 81.68 145783 145.91 1909.56 81.73 145.87 P 483 is the 7.0 m star, DM (40) 7. The meridian positions indicate some change : 1879 8o?2 i43'.'8 A.G.Bonn DM (63) 3 (8. 7.. .11.0) R. A. o" 3 9" Decl. + 63 17' 1909.496 .512 SIS 68.38 68.58 130.56 130.51 74.10 1909.51 68.56 130.41 This is one of the red stars in Schjellerup; apparently with- out sensible proper motion. 1880.32 68?45 130715 2n Bl There are several stars nearer than this ; the nearest is 12.8 m : 1909.496 244 24':8i .512 23.6 24.78 515 24.9 24.84 1909.51 24.3 24.81 Y Pegasi R. A.o I1 7 m 3 a Decl. + 14" 31' A and B (11.8) 1907.502 28s?so 163^75 .523 540 285.38 285.18 163.51 163.05 1907.52 285.35 163.44 The only other measure of this is : 1879.51 285^6 i6i':82 211 P' These positions give for the proper motion of the large star : o"o63 in 8i?8 The value of this movement from the meridian observations seems to be very uncertain : Auwers (Fund.) o"oi6 in 2i8?o Auwers (A. N. 3508) 0.018 in 254.0 Newcomb (Stand.) Newcomb (Fund.) Boss 0.003 in 237.5 o.on in 157.7 0.013 in 270.0 Burnham: Measures of Proper Motion Stars -H- If there is no unusual error in the early measures, the motion is in the opposite direction from that previously given. Repeating these measures after a suitable interval will settle the question. Of course there is no probability that the small star has any motion. It has a small companion which I have measured : B and C (n.8. ..12.4) 1907.502 I973 2o"49 .523 195-7 20.35 540 196.0 20.28 1907.52 196.3 20.37 Nothing else of this but a rough setting : I993: 2iTo (1879. 47) Oxford (Z 26) 259 (9-8...) R. A. o" to 50:50 Decl. + 25 17' 16*0 The place of this star from the Oxford Astrografhic Cata- logue is for 1900, from plate taken 1907.79. From a comparison of this with an earlier photograph, the proper motion is given: 0^159 in 99?o This star is DM (25) 23 (9.2m). A comparison of the above place with that in A. G. Camb. implies a small proper motion. The only available comparison star is problably too faint to appear on the photographic plate. A and B (9. 5... 12. 6) 1910.529 3o8?go 111*87 Groombridge 34 R. A. o" I2 1 " 33' Decl. + 43 21' A and B 1907.463 .482 .485 .502 .523 56.38 56.65 56.25 56.57 39"02 38-87 38.68 38.66 38.90 1907.49 56.47 38.83 A and C 1907.463 I20?30 28^30 .485 120.35 28.14 .502 "9-93 27.75 .523 121.25 27.99 1908.518 125.40 25.70 .520 124-73 25.68 537 124.30 25-85 559 124.77 25.42 573 125.40 25-66 1909.406 129-75 23-77 512 129.24 23-47 515 129.40 23-81 570 130.08 23.68 1910.471 134-73 21.90 473 134-80 22.23 529 135-90 21.40 .605 136.41 21. 8l The principal stars make a system of the 61 Cygni class. The i ne principal stars make a system ot tne 01 ( difference in the proper motions is very small. -570 .589 309-13 309.05 111.67 ill. 06 1910.56 309.03 I". 53 1860.18 52?go 4o"os in 02 1868.50 52.97 39-67 2n O2 1875.41 53.84 39-61 2n O2 1882.67 54-57 39.41 2n O2 1905.88 56.25 38.80 Russell 1907.49 56.47 38.83 5" P Oxford (Z 26) 355 (l R. A. o* 12 29?8i Decl. + 25 57' 7?6 This place (for 1900) is from the Oxford Astrografhic Catalogue from a plate taken 1907.79. From a comparison with an earlier plate, the proper motion is given : oTi86 in 36^9 This is identical with the 9.4 m star, DM (25) 26. Not in A. G. Camb. The two comparison stars measured should be on the photographic plates. The time of the measures of the fixed star is too short to make any correction to the recognised proper motion of A. This will be done from later measures. Russell Russell 1904.98 "2?57 34"6s 1006.78 118.10 30.16 1907.49 120.46 28.04 4" 1908.54 124.92 25-66 5" 1909.52 129.62 23-68 411 1910.52 I35-46 21.83 4n 1910.529 -589 A and B (9.5. ..10.0) i73 199-75 1910.56 199.74 A and C (10.0) 1910.529 .589 1910.56 353-00 352-8S 352-92 80.02 I26T63 126.36 126.49 The positions by Russell are from a photographic plate. (Man. Not. Dec. 1906.) Some of the values of the proper motion are: A. G. Bonn 2^827 in 82?3 Kiistner 2.858 in 81.9 Groombridge 2.888 in 82.5 9 Cell (6. 3... n. 7) R. A. o" 16 43" Decl. 12 53' 1909.703 725 744 300?32 300.03 300.20 185:02 184.96 185.28 1909.72 300.18 185.09 Burnham: Measures of Proper Motion Stars No other measures of the small star. The proper motion of 9 Ceti is given : Auwers Paris Porter Boss 0^387 in 8o?7 0.389 in 82.5 0.385 in 81.0 0.397 in 80.0 DM (17) 57 (9. 6... 10.9) R. A. o" 17 II s Decl. + 37 55' 1909-573 .589 592 4-SS 4-50 63"47 63.48 63.57 1909-58 4-49 63-51 By mistake Ball measured this star instead of the variable star which is ,31" /. I877.59 447 64"90 in Bl 1878.40 4.07 63.48 2n Bl Evidently little or no change. R Andromedae (8. 3... 10.9) R. A. o" 17 42' Decl. + 37 55' 1909.589 592 144-33 8 4 "69 84.49 1909.59 144.32 84.59 The principal star DM (37) 58, is variable and reddish. The measures by Ball of the last preceding star were intended for R Andromedae. DM (30) 89 (9.0. ..9.4) R. A. o" 32 26" Decl. + 30 22' Abetti (A. N. 4461) finds for this small star, near 8 Andro- medae, a proper motion of : o"26o in 26s?6 There is no near suitable star for comparison. I have there- fore connected it with the 9.3 m star DM (30) 90 : 1911.471 509 545 121 ?2O 121.40 121.57 233"97 233.43 233.51 1911.51 121.39 233.64 For comparison there is only the following : 1875 I22?3 227^7 A. G. Camb. 1895.8 122.3 232.5 Oxford (photo.) For the photographic position, a scale value of 300*0 is applied to the difference of the measured coordinates. The two positions are not very accordant. The first compared with the measures would imply a proper motion of o"ig in 270, while from the other it is o"25 in 230. 54 Pitcium (6.1. . .11.0) R. A. o" 33 7" Decl. + 20 36' 1907.444 9i25 12 I "76 .485 91-75 122.40 .502 91.63 122. OO 523 9I.9S 122.06 1907.49 91.64 122.05 The following are all the measures of this star: 1852.69 104? 28 oS'rsi in OS 1866.92 100.47 105.27 in O2 1907.49 91.64 122.05 4n p The proper motion of the principal star is : Measures o"6n in 23i?4 Auwers 0.601 in 232.7 Boss 0.596 in 231.0 DM (33') 99 (8. 5... 9.5) R.A.o"37 ra 7' Decl. + 33 12' Prof. Abetti (A. N. 4453) has called attention to the proper motion of this 8.5m star, which he finds to be : 0*480 in 315?! This is obtained by comparing it with a star of the same magnitude about &5 following, and 9^5 south. This star is DM (32) 129. Both stars have good meridian positions, with an interval of nearly forty years, and the proper motion found results therefrom, assuming the comparison star to be prac- tically fixed. There is a better and much nearer star for this purpose of only 9.5 m, and that is DM (32) 120. It is safe to infer that a star of this magnitude has no motion which need be taken into account in the micrometer measures. The fol- lowing measures connect the two : DM (33) 99 and (32) 120 1910.895 l8l?20 286:' 49 .931 181.18 286.05 933 180.89 286.11 1910.92 181.09 286.22 The only positions for comparison are : 1855 179 324* DM 1894.7 181.8 292.0 Potsdam From these it may be inferred that the star in question has some motion, in declination at least. Further measures with the micrometer, after a suitable interval of time, will settle the question, and give a definite value to the movement. There is another DM star of about the same magnitude, 8.3 m, nearly preceding, and near enough in declination to be measured directly with the micrometer: DM (33) 99 and (33) 96 A RA A Decl. 1825 105! 4 + 7" Weisse 1855 105.2 54 DM 1894.7 104.7 39-8 Potsdam 1910.9 104.5 40.2 P Bttrnham: Measures of Proper Motion Stars 18 Cfti (6.0. ..12.3) R. A. o* 39 m 27' Decl. 13 32' 1909.703 .725 744 232:15 232.15 232.77 76797 76.89 77-17 1909.72 232.36 77.01 No other measures. The proper motion of 18 Ceti is given : Auwers 0:223 in I97?p Paris 0.216 in 190.9 Porter 0.210 in 198.3 Boss 0.200 in 191.4 t Andromedae (4. 2. ..15. 2) R. A. o* 40 59' Decl. + 23 37' A and B 1910.760 349?! 28:52 777 349-1 28.42 .780 348.7 28.41 1910.77 349-0 28.45 A and C (13.5) 1910.760 229^97 95*83 777 230.32 96.75 .780 229.13 96.71 1910.77 229.81 96.43 A and D (10.7) 1910.760 257?66 168:29 777 257.80 167.71 .780 257-56 167.78 1910.77 257.67 167.93 No other measures of these stars. The proper motion of ; Andromedae is given from meridian observations : Auwers 0:138 in 238?7 Boss 0.129 in 231.8 DM (69) 45 (7-5...IO.O) R.A.o"42"o' Decl. + 69 47' 1907.750 296:22 65:10 .769 296.53 65.47 .772 296.27 65.24 The only other position of the lorn star is: 1893-15 30i?i7 62:72 2n Eng 1907.76 296.34 65.27 3n p The correction to the proper motion is small : Measures 0:408 in 54?o Stumpe 0.402 in 66.4 Greenwich 0.422 in 59.1 LaUnde 1299 (5.9.. .10.5) R. A. o* 42 m 5' Decl. + 4" 40' 1909.703 20o?95 194:61 .722 725 200.93 200.93 194-67 194-88 1909.72 200.94 194-72 No other measures of this. The principal star has a large proper motion : Newcomb i''353 in 147 ?8 Porter 1.353 in 146.9 Boss 1.433 in 145-7 8 Piicium (4.6. ..13.2) R. A. o" 42 27' Decl. + 6 56' 1911.663 .720 .736 755 15-88 15-60 15.17 15-33 132-53 132.42 131.76 132.14 1911.72 15-50 132.21 No other measures. The proper motion is given : Auwers o'!o6g in I26?7 Newcomb 0.092 in 118.6 Boss 0.093 in 118.3 64 Fiicium (5. 3.. .12. 7) R. A. o" 42 40' Decl. + 16 24' A and B 1911.720 755 775 322.20 322.32 68" 97 68.79 69.12 1911.75 322.39 A and C (13.1) 1911.720 755 775 164.58 165.23 68.96 78:60 79-41 78.83 I9II-75 164.? 78.95 No other measures. From meridian observations the proper motion is: Auwers 0:198 in i8s?o Boss 0.204 in 185.7 Lalande 1532 (7. 5... 9. 8) R.A.o h 4836' Decl. + 23 27' 1907.731 750 772 .788 215.62 215.62 215-93 61:63 61.78 62.09 61.86 2n 4" Eng The only other measure is : 1893.05 2i6?57 65:79 1907.76 215.75 61.84 Hence the proper motion of the principal star is : 0^276 in 229?! Some of the results from meridian observations are : Stumpe 0:250 in 232?o Paris 0.242 in 229.0 Porter 0.286 in 235.9 Burnham: Measures of Proper Motion Stars DM (66) 75 (8.8. ..ii. 8) R. A. o" 50"' 24," Decl. + 67 3' A and B 1909.496 226?oo 7o"63 .515 226.13 70-7 .570 226.18 70.53 1909.53 226.10 70.62 The principal star sometimes called red, but only reddish now. Change is doubtful. 1877.83 225?44 71*30 2n Bl A and DM (66) 74 1009.570 34i8$ I59"84 .573 341.82 159-77 1909-57 34I-83 iS9-8o The meridian observations give this relation : 1874.5 341 7 161*4 A. G. Chris The apparent change in the distance of this 8.8 m star is not likely to be real. 25 Ceti (5.9. ..12.3) R. A. o" 56 59" Decl. 5 29' 1911.755 241^07 109*37 775 24LI7 108.44 .777 241.10 108.84 1911.77 241.08 108.88 No other measures. The proper motion is : Auwers 0*163 in 236?5 Boss 0.152 in 228.3 \iCassiopelae (5... 10. 8) R. A. i" o 1 " 22" Decl. + 54 20' A and B 2I7?93 187*32 1907.482 485 .502 523 1910.493 529 570 For comparison we have 1855.34 165.30 188.15 217.58 217.85 217.85 221.22 221.33 221.20 1856.88 1881.93 1907.50 I9I0.53 217.80 221.25 238*89 235-65 190.29 187.36 190.53 187.35 187-49 187.29 190.43 190.60 190.55 l6n 4n 2n 4n 02 O2 O2 From the large number of nights in the first position by O2, the resulting proper motion should have a high degree of ac- curacy. As would be expected in a star moving at this rate, the correction is small: 3^789 in II 4 ?5 3.757 in 115.0 3.759 in 114.4 3.759 in 114.5 Measures Auwers Newcomb Boss Other small stars in the field are : AC 1907.463 I4530 Cc 1007.463 113.80 Aa 1907.463 144.78 4.19 87.71 80 Pigcium (6.O. . .9.8) R. A. i*2 ra ii B Decl. + 5 i' 1907.750 .769 .772 128.96 129.15 159.72 159.12 159.06 The small star is DM (4) 192. These are all the measures: 1853.93 132^72 152*22 in OS 1868.76 131.68 153-84 m O2 1882.69 130.59 155-82 in O2 1907.76 128.98 I59-30 3" P These positions give for the proper motion of the large star: 0*230 in 255?8 This motion from meridian positions is larger: Auwers 0*339 i n 239^2 Porter 0.350 in 240.7 Newcomb 0.318 in 237.5 Boss 0.327 in 236.3 It is not probable that the small star, 9.5 m in DM, has any sensible motion. To determine this hereafter, I have measured a third star : A and a (12.5) 1907.769 286^43 86*20 .772 286.33 86.04 1907.77 286.38 86.12 T] Ceti (3. 5... 10. 2) R. A. i" 2 33" Decl 10 49' 1907.636 .638 .673 304.45 304.45 The only measure for comparison is : 1879.88 30450 225*22 1907-65 304-57 233.53 Giving for the proper motion of A: Measures 0*299 in Auwers 0.219 in Newcomb 0.246 in Boss 0.247 '" 233-57 233-55 233-46 an 3" I26?4 125-5 120.7 122.6 Cassiopeiae (4. 6... 10.5) R.A. i"3 m 48' Decl. + 54 31' 1907.463 I347o I45''55 . .482 I34-87 145-50 485 134-75 145-79 The several measures are: 1853.50 131 8o I54''6> 2n 1881.15 133-13 149-64 m 1907.48 134-77 I45-6I 3n The proper motion of 9 Cassiopeiae is : Measures 0*221 in 92^7 Auwers 0.207 in 96.7 Boss 0.230 in 94.5 O2 O2 Bnrnham: Measures of Proper Motion Stars Lalande 2062 (7.7. . .9.4) Lalande 2387 (8. 5... 10. 2) R.A.i 11 3 52' Decl. + 42 18' R. A. i" 13 I' Decl. 9 33' A and B 1907.865 59? 13 162:00 1907.791 298? 18 154:16 8.000 59-23 162.64 7.807 298.28 153-95 8.079 59.38 162.50 7-848 8.102 298.25 154-46 , 208. DU.U Theonly measures are : 1893.94 6o?27 i 57" 04 2n Eng B and C (9.4. ..12.0) 1907 98 59-25 162.38 3" P 1907.848 8.102 224?27 34^5 Giving for the proper motion : 224.40 34-54 . it-i OTT"T 1907.97 224.33 34-54 These are all the measures of AB : 1893.12 297" 155*34 2n Eng 1907.89 298.26 154.15 4n P From which the proper motion of the larger star is : 0*225 in 228^6 The meridian values are : Stumpe 0*221 in 200?3 Paris 0.228 in 208.8 Porter 0.261 in 216.5 38 Ceti (6.0. ..12.3) R. A.i h 8 m 42 > Decl. i 37' A and B 1909.570 275?8s 114*00 .627 275.45 114.40 .649 275.32 113-86 The meridian value is probably too large : Paris 0:585 in 2o6?2 Porter 0.589 in 212.5 8 Casslopeiac (3.0. ..II. 7) R. A. i" I7 m 59' Decl. + 59 37' I909-5I5 570 573 67.18 67.18 136*12 136.04 135-88 1009.55 67.18 136.01 1909.61 275-54 114-09 No other measures of the small star. The proper motion of 38 Ceti is given : Auwers 0*239 in 336^8 Paris 0.204 in 35 2 - Porter 0.227 in 340.7 Boss 0.221 in 353.4 One of Swift's nebulae (Dreyer 442) is in the field sp. It is too faint and diffused for very accurate bisection : A and neb. 1909.570 226?8 219*0 .627 227.3 216.6 No other measures. There is a faint star near B. The proper motion of the large star is given from the catalogue places: Auwers 0:295 in ioi?o Newcomb 0.309 in 96.8 Groombridge 0.310 in 98.9 Boss 0.324 in 98.2 Lalande 2682 (8. 2... 9.1) R. A. i" 22 30' Decl. + 21 6' A and B 1907-731 77io 86736 1909.60 227.0 217.8 0ford (2 26) 3131 (9.3 m) R. A. I'll" 1 12?63 Decl. + 25 55' 1 1*0 This is the 9.2 m star, DM (25) 206. The place given above, for 1900, is from an Oxford astrographic plate taken 1907.84. The proper motion is deduced : 0:274 in 77?5 There is no near small star for micrometer comparison. The nearest A. G. star is 7.7 m, some distance following. A and DM (25) 211 1910.5 AR. A.+ 87T7 ADecI.+ i6"6 1900. 88.1 195 P A.G. Oxf. 750 772 77.05 76.62 86.45 86.33 1907. 75 76.92 86.38 B and C (=Ho9) 1007. 731 750 772 94?5 94-1 92.6 3*04 2.98 3-02 1907. 75 93-7 3.01 A and D (10.3) 1907. 788 791 845 184^40 184.75 184.58 82:15 81.94 82.16 1907. 81 184.58 82.08 For A and B we have: 1893.05 I907.75 7995 76.92 94*27 86.38 2n 311 These give for the corrected proper motion of A 0:627 in iog?7 Eng Burnham: Measures of Proper Motion Stars This motion in the star catalogues appears to be too small : Stumpe o"48p in iio?7 Paris 0.519 in 110.4 Porter 0.473 in 111.7 That B has no motion seems to be certain from the several measures of BC during the past 25 years. In further verifica- tion of this, I have measured a third small star D. Lalande 2701 (8. 5... 9.0) R. A. i* 22 59" Decl. + 30 23' 1907.750 348?i8 i84"35 .788 348.15 184.35 .810 348.36 184.23 These stars are DM (30) 233 and 232, and the magnitudes 8.1 and 9.3. DM (59) 274 (9.0. ..8.5) R. A. i" 25 32' Decl. + 60 o' A and B 1909.315 .570 573 i8??i3 187.00 186.58 6o'.'oo 59-74 59-68 1909.55 186.90 59.8i A and C (8.2) 1909-515 I25?35 144^40 570 125-35 I44.5I -573 125.32 144-73 1909.59 125.34 144-55 1892.12 1907.78 349.30 348.23 184.31 Eng P These positions give for the proper motion of A : Measures 0*220 in 95?3 Paris 0.248 in 90.0 Porter 0.220 in 96.0 A similar pair, 15" p and 6' s, was at first measured for the other : DM (30) 230 and 229 (8.7. . .9.2) 1907.772 250?78 90:' 1 7 .788 250.50 89.91 .791 250.75 89.96 1907.78 250.68 90.01 No other measures. The DM places give a larger distance. H Pisciam (4.5...II.O) R.A. i"23 m 54" Decl. + 5 31' 1907.769 301 ?63 182? 17 The primary is reddish. B and C are respectively DM (59) 273 and 276. In A. G. Hels. the D;M numbers 274 and 273 seem to be transposed. With this correction we have the following for comparison : A and B 1876.8 1878.83 i8s5 186.52 6o"o 60.28 2n A. G. Hels. Bl A and C 1876.8 1878.83 I25?6 125-52 I43"4 144.11 2n A. G. Hels. Bl These are among the principal stars of the cluster h 126 (M 103). v 50 AnJromedae (4. 3. ..12. 7) R. A. i" 29 45' Decl. + 40 48' .772 .788 301.63 182.66 301.53 182.57 Rejecting the single measure by O2, marked uncertain, we have: 1883.81 302?6s 176^72 in H2 1907.77 301.60 182.47 3n P Giving for the proper motion of the principal star: 0^279 in 92?3 The meridian values are : Auwers 0*266 in g6?7 Newcomb 0.298 in 95.2 Porter 0.277 in 97-7 Boss 0.293 in 98.6 B has a small n.o m companion not previously measured. B and C (10. ..11) 1907.769 30777 27^24 .772 307.20 27.30 .788 306.85 27.50 IQ07.77 307.27 27-35 1909.493 512 SIS 128^50 128.30 128.50 114:21 113.68 114.11 1009.51 128.43 114.00 No other measures of this. The proper motion of the bright star is given : Auwers 0*419 in 2o6?8 Porter 0.409 in 206.3 Boss 0.419 in 205.3 DM (49) 445 (7. 8... 11.3) R. A. i" 36 m 17* Decl. + 49 59' 1909.570 573 .589 40"32 40.19 40.10 107.43 107.37 107.24 1909.58 40.20 107-35 The larger star is reddish. The other measures are uncertain in distance ; probably unchanged. 1879.15 4O?27 106*37 in Bl .64 40.13 104.78 in Bl .64 40.00 106.01 in Bl Burnham: Measures of Proper Motion Stars i Ceti (3.5. ..13. 6) R.A. i-aS-jo' Decl. i634' 1911-813 .870 .942 243.27 243.87 243-00 no"93 110.69 110.63 1911.87 243.38 110.75 No other measures. The principal star has a large proper motion: Auwers 1*950 in 296?! Nevvcomb 1.926 in 296.4 Boss 1.920 in 296.5 The small star will be within range of the micrometer for comparison for a long time. LaUnde 3153 R. A. i" 36 24' I9II-7SS 775 .813 202?03 292.6o 292.63 (7. 2.. .11.8) Dccl. 18 29' 85*46 85.69 85.02 1911.78 292.41 85.39 No other measures. The proper motion of A is given : Porter 0*541 in oo?0 Piazzi I. 159 (6.O.. .9.5) R. A.I' 39" 5' Decl. + 63 16' 1907.731 I3775 93*47 750 137-50 93-32 772 137-28 93-64 The small star is 1 >M (63) 241. The measures are : 1892.21 I35?i3 102*70 2n Eng 1907.75 137.51 93.48 3n P The correction to the proper motion is small : Measures 0*649 in H2?5 Greenwich 0.626 in 111.3 Porter 0.636 in 113.0 Boss 0.634 in in. 8 53Cri (4. 7.. .6.1) R. A.i' 43" 41* Decl. n" 17' 1908.652 24993 i83"54 .689 250.18 183.98 .692 250.15 184.09 It is evident from the following positions that these stars are relatively fixed, and that they have a common proper motion : 1888.02 250^03 183:88 an Eng 1894.88 250.20 183.88 2n Eng 1908.68 250.09 183.87 3n P There is no third star near enough to connect with either for an independent determination of the movement of the large stars. The proper motion of 53 Ceti is given : Auwers 0*212 in 2.6?4 Porter 0.183 in 244.1 Boss 0.177 in 243.5 ti (3-5...IO.O) R. A. i' 45"' 32" Decl. 10 55' 1907.636 .638 .673 41-15 40.90 41.08 187': 17 186.88 186.89 The small star is SD (11) 360. The only measures are: 1879.88 40^70 185%; 211 p 3 1907.65 41.04 186.98 3n p The proper motion is so small that a longer interval is re- quired to give a reliable value. From the measures we have: 0*062 in 26o?2 This is a larger and reversed motion in R. A. From meridian observations : Auwers (Fund.) 0*028 in I7i!o Auwers 737 192*14 .862 306.88 191.92 .882 306.88 191.82 1911.71 No other measures. The proper motion of 77 Ceti from meridian observations is given: Auvvers 0*091 in 140^9 Boss 0.090 in 136.2 80 Ceti (5.9.. .13.5) R. A. 2" 30 6' Decl. 8 21' A and B 1911.663 I23?i8 117*06 .720 123.48 117.52 1911.69 123.33 117.29 A and C (9.6) 1911.644 189^26 146*07 .663 189.23 146.40 .720 188.08 146.32 1911.67 189.16 146.26 C is SD (8) 488. From meridian positions we have for AC : 1900 i8g?2 147:2 A. G. Wein-Ott. The proper motion of 80 Ceti is given : Auwers 0*087 in 222^8 Boss 0.076 in 209.3 DM (57) 651 (6. 2.. .9.0) R. A. 2" 42 m 46" Decl. + 57 49' 1910.644 .666 .678 147-07 147.10 193.19 193-22 193.44 1910.66 147.07 193.28 I do not find any proper motion from meridian positions for the large star. For comparison we have : 1875. I478 191*4 A. G. Hels. 1879.38 147.3 192.19 2n Bl 1908.86 307.04 191.96 The proper motion of the large star is small : Auwers 0*024 in 153?! Boss 0.031 in 121.5 No other measures of B. There appears to be a large error in one of the former distances of C : 1879.16 3o673 192*14 in Bl 1879.64 306.57 190.75 in Bl 16 Pertei (4.5. . -9.2) R.A.243' " o' Decl. + 37 49' 1008.573 597 .613 I4553 145-88 i45-6o 252.13 252-32 1908.59 145.67 252.24 The other measures are tlic following: 1857.41 I44?20 262*96 in i88f.i6 144.63 257.61 in These positions compared with the recent measures give for the corrected proper motion of the principal star : 0*251 in io8?8 02 O2 10 Burnham: Measures of Proper Motion Stars This has been given from transit observations : Stumpe 0*205 in 107^6 Porter 0.200 in 116.7 Auwers 0.204 in 108.2 Boss 0.213 in 119.5 As a further check on the corrected value, a nearer star 13 m is connected : 1911.625 I2i?io 97"24 .644 121. 16 97.04 .663 121.46 97.13 1911.64 121.24 97.H Anonymous R. A. 2" 45 m 54' Decl. + 22 37' 8" M. Puiseux, of the Paris Observatory, has called attention to a 10.4 m star apparently having a large proper motion {Bull. Ast., xxvi, 416). This was noted on a photographic plate made November 25, 1908. Comparing this with a previous plate, he found for the proper motion of the small star : o"7o8 in 241 ?7 He gives the place (1900) as above. The photographic print shows three stars, the nearest two exceedingly faint, and very much fainter than the smallest stars usually visible on the astrographic plates. My measures of these stars are: A and B (n.i.. .13.2) 1910.589 I75?68 g6".73 .605 176.26 96.93 .666 176.23 95.84 .678 176.37 97.38 A and C (13.3) 1910.589 ii3?82 ioi"o7 .605 113.41 101.78 .666 113.03 101.78 .678 II3-73 101.12 A and D (12.1) 1910.091 301 oo i62?o9 570 301.03 162.09 .586 301.05 161.85 589 301.00 161.85 M. Puiseux gives the photographic relative positions of these stars : AB AC AD From these positions we have for the apparent motion of A : AB R. A. 0^468 Decl. + 0^185 AC 0.873 0.393 AD +0.218 +0.013 When the errors probable in the photographic and the micro- metrical results are considered, it is obvious that no high degree of accuracy for the proper motion, if any exists, could be ex- pected from positions having a time interval of only a little more than one and a half years. The most distant star is dis- cordant when compared with the other two, and must there- fore be rejected if use is made of the others. From the mean of AB and AC we have for the proper motion of A : o"678 in 261 ?2 The smaller apparent change in AD may be due to errors of observation in all the measures, or to a possible proper motion in that star, although this is to the last degree improbable. To settle this question hereafter, I have connected this star with others shown on the print : D and E (10.0) 1910.701 703 739 742 1910.760 . 7 8o .8i8 289.78 289.97 290.01 E and F (12.5) 2ig?6o 219.51 219-30 E and G (12.5) 1910.818 250^58 .838 250.48 101:10 101.25 100.58 100.51 157-93 158.21 158.09 215-65 1908.90 1910.72 200?73 289.88 101^29 100.86 4" Photo. 1908.90 1910.78 219.71 219.47 158.27 158.08 3" Photo. P 1908.90 1910.83 250.55 250.53 215-52 215.70 211 Photo. P 1908.90 176^60 9Ka Photo. 1910.63 176.13 96.72 4n P 1908.90 114.20 100.34 Photo. 1910.63 113.50 101.44 41 P 1908.90 301 . 10 161.69 Photo. 1910.46 301.03 161.97 4" P Professor Frederick Slocum has kindly measured the print referred to, with all possible accuracy, for the positions of these stars. The comparisons are as follows: DE EF EG From these measures it would seem probable that D has some proper motion, since there is no evidence of change in EF or EG. The two positions of DE imply a movement of D of o"87 in 355?6. It would appear that, for all practical purposes, measures from a print can be safely used in lieu of those from the original plate. The print-measures of the other two stars are : AB 1908.90 I76?2 96^63 AC 1908.90 114.0 100.27 A careful re-measurement of these stars with the micrometer a few years hence will give a substantially correct value of the movement of both stars, if the apparent change is real. Lalande 5273 (5. 8... 13. 3) R. A. 2" 46 27' Decl. +6i2' A and B 1911.625 255?27 50^75 .644 755 256.10 256.17 50.63 50-95 1911.67 255.85 50.78 AandC (11.3) 1911.625 4327 9^37 .644 43.23 91-51 755 43.40 91.60 1911.67 43-30 91.49 II Burnhain: Measures of Proper Motion Stars No other measures. The proper motion of the principal star is given: Argelander 0^172 in 87?o Boss 0.175 >n 81.1 Porter 0.160 in 90.0 DM (63) 369 (6. 5... 9. 9) R. A. 2" 46 31 ' Decl. + 63 50' 1910.644 .666 .678 129.33 129.40 129.07 115760 115.89 116.50 I9IO.66 129.27 Iio.oo No proper motion given the large star. It is decidedly reddish. The only other measure is : 1879.40 I29?7 115*20 2n Bl Lalande 5586 (7. 1. ..9. 2) R. A. 2" 56 2' Decl. + 35 58' 1907.788 .807 .848 26s?03 265.10 265.30 84728 84.07 84.45 1907.81 265.14 84.27 These stars arc DM (35) 616 and 615. In the first instance this was measured by mistake for Lalande 5712 which is about 4 m /. There are no other direct measures, but from the meridian positions there would seem to be considerable proper motion in R. A. in one of the stars. 1889.2 265?! 8172 A. G. Lund This is confirmed by the DM places which give 77*7 for A RA. On one occasion the principal star was thought to have a very faint companion 6" or 8" distant on the f side, but the con- ditions were not suitable to verify it later. Lalande 5712 (7.0. ..8.4) R. A. 3' o" 3' Decl. + 36 10' 1007.750 245?io .807 244.83 .810 245.26 The mean results are: 1893.12 243^15 n6722 '907.79 245.06 117.88 117-90 117.92 2n 311 Eng It would be unsafe to assume that a comparison star of this brightness had no motion of its own. In this instance it is probably fixed. The several values of the motion of A are : Measures 07290 in 131!! Paris 0.373 in 124.5 Porter 0.338 in 131.9 Both stars are in A. G. Lund. The smaller is D M (36) 631. t PtTMei (4. 2... 12. 4) R. A. 3" i 5' Decl. + 49 9' 1911.644 i3i73 146^24 .663 .720 132.42 131-83 146.09 146.12 1911.67 I3L99 146.15 No other measures. The principal star has a large proper motion : Auwers Boss Newcomb 1 7253 in 93 ?8 1.268 in 93.6 1.308 in 94.3 co Pertei (4.7...II.O) R.A. 3 h 3 m 33' Decl. + 39 9' 1908.845 m?63 177722 .862 .882 111.05 111.13 177.55 177-62 177.46 2n 2n Bl Donner 1908.86 111.27 The only other positions are: 1879.40 no?8o 176750 1896.99 112.05 178.13 The last position is photographic. The proper motion of m Persei is small : Auwers 07039 in 300^7 Boss 0.022 in 277.7 DM (47) 779 (6.9. ..10.8) R. A.3*4 m 8' Decl. + 47 17' A and D 1908.884 294^68 2027o8 .898 295.02 202.17 .920 294.99 201.95 For comparison we have the following: 1880.41 294? 14 198764 2n 1908.90 294.90 202.07 3" If the early position is correct, one of these stars has a proper motion of about o7i2, but this must be verified by later measures. I have been unable to find any other positions of the small star photographic or otherwise. The star catalogues give no proper motion to the large star. This is sometimes listed as a red star. I have added two new and near companions to the principal star, the first of which is very faint and difficult. A and B (14.8) 1908.884 34 7"47 .920 7-3 7-45 974 9-8 7-^5 1908.93 6.8 7.36 A and C (13.2) 1908.884 176^6 2 87o6 920 175-5 28.15 .939 176.2 27.78 Bl 1908.93 176.1 28.00 There is a faint star near D, a re-measurement of which will show whether there is any movement in D. 12 Burnham: Measures of Proper Motion Stars D and d (13.5) 1908.920 o6?o 939 91-7 ip'74 19.98 1908.93 93-8 19.86 Lalande 5922 (7 . 3 ... 7 .8) R. A. 3" 5"' 6' Decl. 11 35' 1907.788 .791 845 56.03 56.27 143-64 143.88 I43-52 Eng The only direct measures are: 1894.03 56?8o 144" i 7 2n 1907.81 56.17 143-68 3n p The comparison star might well have some proper motion so far as magnitude is concerned'. In this instance the motion, if any, is small. For the proper motion of A : Measures o''i2i in I29?5 Stumpe 0.180 in 129.2 Paris 0.203 in 130.1 Porter 0.165 in 125.9 The relation of these stars in some of the catalogues is not consistent with the micrometer positions, nor with the recog- nised proper motion. 1825. 1890.0 1894.0 1907.8 ARA I3o"o 118.9 120.64 "9-35 ADecl. 7o?5 77.1 78.94 80.00 Weisse Cin. 13 Eng To show hereafter whether or not B has any proper motion, I have connected it with a 11.5 m star. 1007.865 -974 B and C I55oo 154-50 86"i4 86.55 1907.92 155-20 Lalande 5993 (8.5... R. A. 3" 8 m 24' Decl. + A and B 1907.848 i8i?03 .865 974 180.83 180.65 86.34 8.5) 15 Si' I75"97 175-66 175-25 1007.89 180.84 A and C (11. 8) 1907.848 .865 974 235.87 235.60 175-63 181:58 180.93 180.28 1907.89 1907.848 .865 974 1907.89 235-74 B and C 296?45 296.80 296.40 296.55 180.93 164.76 164.87 164.94 B is Lalande 5994, and from meridian observations, has no proper motion. The only measures are : 1894.03 i8o?oi I75?92 2n Eng 1907.89 180.84 I75-63 3" P These positions give for the proper motion of A : oTi64 in 97?9 If these measures are combined with the meridian positions in A. G. Berlin and Cin. 13, the proper motion is : 0^184 in in?6 Some of the values from catalogue places are: Stumpe 0^294 in I47?o Paris 0.195 >n 9-O A. G. Berlin 0.139 ' n 126.8 As a further contribution to this matter in the future, I have connected each with a faint star which it is practically certain has no sensible proper motion. Bradley 448 (4.8. ..12.5) R. A. 3" 9 m 27' Decl. + 65 13' 1911.931 97?6o 122*08 942 57-53 121-50 950 _ 57.63 120.97 1911.94 57.59 121.52 If the large star has any proper motion, it is very small and very uncertain. Auwers o"o28 in 244?9 Gr. (1900) 0.006 in 348.2 Boss 0.012 in 293.9 v. Ceti (5. 2... 9. 2) R. A. 3" I3 m 4' Decl. + 2 56' 1909.071 156^90 269^07 .627 .630 .649 157-25 157-10 156.95 269.18 267.83 268.62 O2 H2 1909.49 157-05 268.68 For comparison we have the following measures: 1853.26 I5322 271^57 311 1884.10 155-37 270.13 2n From these positions the apparent proper motion of x Ceti is : 0^323 in 74?4 The motion from meridian observations seems to be too small. It is not probable that the small star, DM (2) 521, has any sensible movement. It is given in A. G. Albany, Schjellerup and other star catalogues. 0^269 in 6s?9 0.288 in 70.3 0.277 in 69.3 0.281 in 70.5 For future use in this connection, I have connected a third small star : B and C (11.5) 1909.706 272?25 2I5?I4 .725 272.53 215.09 Auwers Newcomb Porter 'Boss 1909.71 272.39 215.11 Burnhain: Measures of Proper Motion Stars uPertei (2.2. . .12.2) R. A. 3" 15 45" Dccl. + 49 26' I909-573 .589 .627 195.90 195.98 196.02 167*01 166.99 166.88 I909-59 195-97 166.96 The only other measures are : 1879.54 I95?5 166*05 2n P 3 From these positions we have for the proper motion of o Persei: 0*055 in 71?! The meridian observations leave the amount and direction of this motion very uncertain. Auwers (F. C.) 0*064 in i66?7 Auwers (Cor'd) o.oii in 105.1 Newcomh (Stand.) 0.045 m 138.0 Newcomb (Fund.) 0.040 in 133.9 Groombridge 0.029 in 146.8 Boss 0.039 in 135.7 DM (42) 787 (7. 5... 12. 8) R. A. 3" 27 m 27' Decl. + 42 29' A and B 1909.802 lpl?oo 54"io .818 191.40 53.89 .838 191.70 53-84 1909.82 191.37 53-94 No other measures of the small star. The proper motion of the principal star, Groombridge 706, is given : A. G. Bonn 0*179 ' '376 Porter 0.174 in 137.5 Groombridge 0.213 in 135-6 For further comparison I have connected a star 8.3m closely following : A and Lalande 6548 1909.802 93-67 I93"75 -818 93-93 193.42 838 93-70 193.66 1909.82 93-77 I93-6I From meridian observations we have: 1878 94?8 199*0 A. G. Bonn These positions give as nearly the same proper motion of A as could be expected from the data : 0*203 in I28?o Recent direct measures are : 1007.26 93?75 i94" Hertzsprung DM (62) 596 (Var. ..9.2) R. A. 3"3i m 30' Decl. + 62 15' 1910.644 .666 .678 348-90 348- So 208*09 207.84 207.83 1910.66 348.83 207.92 B is DM (62) 594. The principal star is reddish. Probably unchanged. 1879.42 348^64 2o8"33 211 Bl b Pertei (3.3. ..10.6) R. A.3 h 34 m 24' Decl. + 47 24' 1907.578 .581 .657 312.40 312.62 99'.'22 09.08 99-09 1907.60 312.52 99-13 The only other measure of this star is : 1879-32 3i2?6o 97^44 311 p 3 From these positions we have for the proper motion of 8 Persei: 0*060 in I27?9 From meridian observations : Auwers 0*039 in i6i?8 Newcomb 0.051 in 135.3 Boss 0.046 in 135.5 Lalande 6772 (7. 5... 10.5) R. A. 3" 35'" 35* Decl. + 42 14' A and B 1907.791 280! 57 47"56 .807 281.25 47-13 .810 281.16 46.97 .845 281.50 1907.845 7.964 8.ooo B and C (12.5) i84?45 184.62 184-50 47.24 55"5i 54.97 55.69 184.52 55-39 There are no other measures of the third star. For AB we have the following: 1893.21 277?57 41 '.'69 ,111 F.ng 1907.81 281.12 47-22 411 P The corrected proper motion of the principal star is therefore : 0*427 in I26?6 Some of the former values are : Stumpe 0*482 in I22?9 Paris 0.534 in 123.5 Porter 0.406 in 124.9 Burnham: Measures of Proper Motion Stars Bradley 536 (7.0. ..9.5) R. A. 3" 46"' 3" Decl. i3i' 1907.636 i54io 95"S6 -638 153.68 95.55 657 153-65 95 -60 The measures are obviously inconsistent and nothing can be safely inferred as to the real relative motion if any. 1886.52 i5357 95"i8 211 Eng 1894-95 I54-08 95.02 311 Eng 1907.64 153.81 95.57 311 p The small star is not in DM, and I do not find it in any of the catalogues examined. A mean of the first two measures com- pared with the last would indicate a proper motion of o7o2S in 332?! for the large star, but evidently this cannot be right, since one of the measures must have a considerable error. It is probable that the two stars have the same motion. Later measures will show. The motion of A from meridian positions is also uncertain : Auwers o7i82 in 262 "4 Boss 0.026 in 240.0 Lalande 7097 (7.0. .. 10.2. .. 10.3) R. A. 3" 46 m 16' Decl. + 59 17' A and B 1907.845 356? 17 I49"8s .848 356-23 149.82 867 356.10 150.27 A and C 1907.845 40? 10 187747 .848 40.08 187.63 40.12 187.69 Piazzi III. 215 (6. 2... 9. 5) R. A. 3" 53 m 54 s Decl. + 17 51' 1909.666 703 .706 277-30 277.48 277-33 i6i7i7 161.22 161.48 .867 The only measures are : AB 1893.26 3552i 1907.85 356.17 AC 1893.26 38.72 1907.85 40.30 149.98 187.18 187.60 3" 3" 3" Eng P Eng 1909.69 277.37 161.29 The small star is DM (17) 664. No other measures. The proper motion of the principal star is : A. G. Berlin o7ii8 in io8?8 Boss 0.141 in 105.2 Newcomb 0.143 in 104.9 37 Tauri (4.2. ..9.4) R. A. 3" 57'" 3 6 S Decl. + 21 45' 1907.581 .638 .657 i89?45 189.40 189.25 I37"52 137-35 137.47 These positions give the proper motion of the principal star: AB R. A. o'.'i89 Decl. + 07219 AC 0.292 0.204 0.240 0.211 From this and the meridian observations we have : Measures 07320 in 3n?3 Stumpe 0.375 in 300.5 Porter 0.365 in 298.3 There are two new and nearer companions to the large star not previously seen. It will be of interest to see whether either belongs to the moving star. A and a (13.3) 1907.845 2I4?7 6797 899 217.1 6.78 For the proper motion of A we have the following positions : 1853.83 i86?9i I38"69 in O2 1880.73 188.65 138.33 4ti Doub. 1887.08 188.25 137.41 211 Eng 1907.62 189.37 137-45 3n P From these measures the corrected proper motion of the principal star is : o7io6 in in?7 This has been given from meridian positions : Auwers 07094 in 128?! Newcomb 0.113 in 120.9 Boss 0.113 in 124.4 39 Tauri (6.5. ..8.2) R. A. 3" 58 14 s Decl. +21 41' A and B 1907.581 .638 .657 2?6 S 2.62 2.70 169.30 169.64 1907.87 215.9 A and b (12.8) 1907.845 67?o 7.964 67.3 8.102 67.9 6.77 33"30 33-29 33-49 1907.97 67.4 Eng B is Piazzi III. 237. It could not be assumed, without satis- factory evidence, that a star of this magnitude was fixed. The measures of BC, however, show no sensible change, and there- fore it is practically certain that B has no proper motion. The measures of AB are : 1887.08 3?87 168751 311 1907.62 2.66 169.46 311 The proper motion of 39 Tauri is : Measures o7i79 in io8?4 Auwers 0.205 in 124.1 Hedrick 0.217 in 127.0 Boss 0.222 in 128.4 B and C (10.8) 1907.581 .638 1907.61 127.65 1-7-7'J 6i7o4 61.20 61.12 Burnham: Measures of Proper Motion Stars One of the prior measures must be rejected for obvious reasons. The other positions seem to show no change in twenty years. Engelhardt calls C 12.2 m. 1887.08 I28?42 63*05 in Eng 1887.08 128.20 61.62 in Eng 1887.09 128.15 61.61 in Eng 1895.06 129.58 61.07 m Eng Lalande 7788 and 7791 R. A. 4" 4 4" Decl. 17 48' A and B (7.4. ..8.5) 1908.044 I38?68 I25?i2 .063 138.97 125.36 .079 138.90 125.03 Meridian positions of both stars will be found in the cata- logues of Bonn, Bruxelles, Cincinnati and Washington. They have very nearly the same proper motion. The direct measures are: 1894.02 I39?io 126^26 2n Eng 1908.06 138.85 125.17 3n p From these measures the relative motion is : 0^087 in i6s8 The proper motion of L 7788 from transits is given : Stumpe oTi7i in i86?2 Paris 0.178 in 180.0 Porter 0.154 in 180.0 I have measured a faint star for the verification of this proper motion hereafter. A and a (13.0) 1908.102 39?55 115:17 9-071 39-53 116.15 9.763 39-10 115-42 1908.98 39-39 "5.58 45 Tauri (6.O. ..lo.l) R. A. 4* 4 57' Dccl. + si3' 1907 .845 42?I7 125:37 7 .865 42.35 125-37 7 .879 42.37 125.76 1 .022 42.60 125.72 For comparison we have : 1888 .07 43 ?32 128:53 2n Eng 1895 .09 42 95 127. 99 2n Eng 1007 90 42 37 125. 55 4" P 48 Tauri (6. 5... 12.0) R. A. 4" 8 m 58' Decl. + 15 6' A and B 1909.725 744 . 7 8o 3i57 31-63 31.30 i38''95 139-10 138.64 1909-74 3I-50 138.90 A and C (11.2) 1909-763 . 7 8o 3o895 308.87 U6.53 1909.77 308.91 146.80 No other measures of the small stars. The proper motion of 48 Tauri is given from meridian observations : Auwers oTioS in 95?3 Boss 0.125 in 101.6 51 Tauri (5.9.. .9.5) R. A. 4" II 1 " 17' Decl. + 21 17' 1909.666 62?23 i66"so .703 62.55 166.51 .706 62.00 166.79 1009.69 62.00 62.26 166.60 The small star is DM (21) 619. No other measures, and no accurate meridian place of B. The proper motion of the principal star is: Auwers o"o88 in loo?3 Boss 0.112 in 110.4 Newcomb o.ioi in 111.5 57 Tauri (5. 8... 13. 7) R. A. 4" 13 12" Decl. + 13 45' 359 17 34-76 359.40 34.70 359-40 34-30 1909.725 .780 .838 1909.78 359.32 34-59 No other measures. The proper motion of the bright star is : Auwers Boss 0:095 in ioo?9 0.121 in 103.4 60 Tauri (6.O. . .13.4) R. A. 4" 15- II' Decl. + 13 48' The meridian value of the proper motion seems to be too small. Measures 0:195 in 74?8 Auwers 0.122 in 79.1 Porter 0.124 ' n 80.3 Boss 0.143 in 84.8 1909.760 .780 A and B 233 50 233.54 233-40 79.36 70.49 79-27 1009.79 233.48 A andC (12.9) 1909.782 33327 io6"88 838 333-20 107.17 1909.81 333.23 107.02 16 Burnham: Pleasures of Proper Motion Stars No other measures. The proper motion of 60 Tauri is given from meridian positions : Auwers o"oo,i in 105^3 Boss 0.118 in 105.2 61 Tauri (4.2. ..12. 9) R.A.4"i6'"i" Dccl. + 17 17' 1909.706 725 744 .760 340?4S 340.60 340.70 340.58 106778 106.60 106.31 106.69 1909.73 340-58 106.60 No other measures. The proper motion of 61 Tauri is : Auwers o7cxp6 in io6?4 Newcomb 0.112 in 105.6 Boss 0.115 in 106.7 64 Tauri (5.1. ..13.6) R. A.4*i7 nl iT Decl. + 17 10' 1909.722 245?63 137740 .763 245.08 137.48 .780 245.87 137.13 I909-7S 245.53 137-34 No earlier measures. The proper motion is : Auwers o"ios in ioi?o Paris 0.163 in 9.o Boss 0.125 in 109.2 / 65 Tauri (4.6. ..12.5) R. A. 4" 18'" 13' Decl. + 22 i' 1909.722 .780 .782 266?20 265.67 266.20 135.35 135.64 135.62 1909.74 266.02 135.54 No other measures. For the proper motion of the large star we have: Auwers o7o78 in 134?! Newcomb 0.103 in 120.4 Boss 0.113 in 115.2 *' 67 Tauri (5.6. ..12.8) R. A. 4" i8 ln 16" Decl. + 21 56' 1909.763 .780 .782 208?42 209.24 209.00 I07"l2 106.93 106.72 1909.77 208.89 106.92 No other measures, x 1 and x 2 Tauri make 2 g, App. I. The proper motion of the latter is : Auwers 07130 in H3o Newcomb 0.133 in 114.9 Boss 0.131 in 117.2 70 Tauri (6. 8... 12. 8) R. A. 4" i8 m 46" Decl. + 15 40' 1909.936 10.049 10.109 342^92 343-oS 342-95 124-59 124.12 1910.03 342.98 124.36 No other measures. The proper motion of 70 Tauri is given. Auwers 0*074 in g6?2 Boss 0.115 in 104.6 v 3 69 Tauri (4. 5... 12. 6) R.A. 4 h i98' Decl. + 22 32' 1909.763 288^58 104715 .780 .782 288.77 288.64 104.32 104.47 1909.77 288.66 104.31 No other measures. The proper motion of the large star is : Auwers o7ioo in I09?9 Boss 0.123 in 114.9 71 Tauri (4.8. ..11.3) R. A. 4" 19 30' Decl. + 15 21' 1909.802 149? i i 136789 09.936 10.049 149.32 149.10 136.67 137.31 1909.93 149.18 136.96 No other measures. The proper motion of 71 Tauri is : Auwers 07098 in 98?2 Boss 0.117 in 103.3 Piazzi IV. 82 (6.0. ..10.8) R. A. 4" 20 53' Decl. + 21 21' 1909.782 232?57 161775 .838 .936 232.70 232.58 161.22 161.18 1909.84 232.62 161.38 No other measures. The proper motion is given: Boss o7n8 in H2?4 A. G. Ber. 0.093 in 118.1 e Tauri (3. 9. ..10.9) R. A.4 h 2i m 37" Decl. + i8SS' 1909.706 268?i3 181749 .722 725 268.30 268.07 181.74 181.73 1909.71 268.17 181.65 No other measures. The proper motion of E Tauri is given : Auwers 07103 in IO7?6 Boss 0.120 in 108.4 Newcomb 0.121 in 106.3 Burnham: Measures of Proper Motion Stars 81 Tauri (5.9.. .9.0) R. A. 4" 23 48' Decl. + 15 26' 1909.936 338? 59 161:84 10.049 338.78 161.83 10.109 338.70 161.56 90 Tauri (4.5.- -13-5) R. A. 4" 31'" 27* Decl. + 12 16' A and B 1910.684 321 4 43"? .835 322.8 44.19 .893 322.1 44.30 1910.03 338.69 161.74 B is DM (15) 638. No other measures. The proper motion of 81 Tauri is : Amvers o"io2 in ioo?2 Boss o.no in 105.8 Porter 0.095 in 103.4 83 Tauri (5.6.. .11.4) R. A. 4" 23 52* Decl. + 13 28' I9I0.933 ios?io ni?93 10.971 105.17 112. oo 11.104 105.00 111.65 1910.80 322.1 44.14 A and C (10.6) 1910.684 3ii87 H5"'7 .720 3H-93 "4-73 777 311-75 114-98 1910.73 311-85 114-96 No other measures. The proper motion of 90 Tauri is given : Auwers o"o82 in 94^2 Boss 0.104 in 95-5 Piazzi IV. 146 (5. 6... 9. 5) R. A. 4" 32 36" Decl. + 7 38' A and B 1909.666 248^8 7o"9i .722 248.9 70.98 .744 248.6 70.75 1910.97 105.09 in. 86 No prior measures. The proper motion of 83 Tauri is given from meridian positions: Auwers 0^093 in IO2?5 Boss o.iio in 100.5 48 Eridani (4.0... 13. 2) R. A. 4" 30 19' Decl. 3 35' 1909.760 i69?82 50^62 .763 169.35 Si-25 .780 169.64 50.86 1909.71 248.8 70.88 A and C (9.0) 1909.666 3i6?40 299*24 .722 316.17 299.49 .744 316.10 298.58 .763 316.22 298.84 1909.72 316.22 299.04 B and C are respectively DM (7) 680 and 679. No other measures. From the meridian observations in A. G. 1 we have the following : AB 1884.1 247?: 6p"2 AC 1884.1 316.6 299.4 The proper motion of the principal star is : Boss 0^082 in po?7 Piazzi IV. 169 (5. 5. ..II. 4) R. A. 4" 37 47" Decl. + 10 55' A and B 1910.777 9738 79"36 .780 96.48 79.40 .835 97.08 78.98 1909.77 169.60 50.91 No other measures. The proper motion is very small, and therefore uncertain. Auwers 0:020 in 275?9 Bou 0.002 in 180.0 Newcomb 0.008 in 270.7 89 Tauri (6.1 .. .12.0) R. A. 4" 31" 17' Decl. + 15 47' 1910.684 49?83 143*01 .780 49.70 142.67 .835 49.85 142-58 1910.40 96.98 79.25 B and C (12.6) 1910.780 358?o 12775 835 360.6 12.08 1910.77 49-79 142.75 No other measures. The proper motion of 89 Tauri is given : Auwers 0^079 in 98?o Boss 0.094 No other measures. The proper motion of 16 Orionis is small. Auwers Boss 0.074 in 94.6 1878.04 3i752 icofoo 211 Bl 1880. 3I7.6 189.4 A. G. Lund 1893.19 317.6 190.01 Donner The last position is derived from astrographic plates. 20 Burnham: Measures of Proper Motion Stars Y Oriom'j (2.0. ..12. 5) R. A. 5" 18 42' Decl. + 6 14' 1909.071 I4407 I79"69 .093 144.50 180.10 .112 I44-23 179.84 For a better determination of this hereafter, I have connected two small stars, not previously noted : A and B (14.7) 1908.769 350?7 20*49 .788 352-8 20.36 .824 350.3 20.00 1909.09 144.27 179.88 The earlier measures are: I8/9.9S I439 178*18 211 p" From the two positions the proper motion of Y Orionis is : 0^070 in 358?3 If the measures are substantially correct, the motion is practically all in declination. Further observations of the small star should be made. This movement from meridian observa- tions appears to be uncertain in both amount and direction. The separate results differ from each other as well as from that given above. Newcomb o"oi8 in 2oo?o Auwers 0.029 in 241.1 Boss 0.020 in 201.4 DM (34)1044 (9. 3... 10. 2) R. A. 5 " ig m 12* Decl. + 34 4' 1910.627 29I?I2 I92"54 .720 291.50 192.76 .742 291.33 193-32 1908.79 351.3 20.58 . A and C (10.8) 1908.747 7i?25 61*24 .766 71.20 61.25 .769 7I.3I 61.48 1908.76 71.25 61.32 Lalande 10299 (8-5...II.O) R. A. 5" 22 m 29' Decl. 3 34' 1907.769 202?20 I34"5I .772 201.82 134.21 .791 202.30 I34-I5 1911.104 202.28 131.02 .107 202.13 130.96 .142 202.07 131.46 .145 202.38 131-29 The mean results are : 1907.78 202?II I34"29 I9II.I3 202.21 I3I.I8 No other measures. The proper motion is : Measures 0*933 in 198? i Paris 0.912 in 199.4 Porter 0.877 in 200.4 SD (3) 1123 (8.7...IO.O) R. A. 5" 25 23" Decl. 3 42' 1907.769 267^80 115723 .772 267.62 H4-93 .791 267.60 114.37 .810 267.98 114-95 1910.835 270.91 117.04 .931 271.28 117.07 933 270.60 116.73 .971 271.08 116.88 The mean results of the measures are: 1892.11 250^62 108*70 2n Eng 1907.78 267.75 114-87 4n P 1910.92 270.97 116.93 4n f3 Therefore the proper motion of the larger star is : Measures 2*131 in is8?8 Porter 2.246 in 162.1 This star is supposed to have a small parallax. e Orionis (2.O...IO.7) R. A. 5" 30 6" Decl. i 17' 1907.772 56^82 179*72 791 57-25 180.09 .810 57.43 179-98 1910.70 291.32 192.87 The principal star is red. No sensible proper motion. 1878.02 20X>?96 192*22 2n Bl Aurigae (5.4) R. A. 5" ig" 1 42' Decl. + 34 22' A and D (8.5) 1908.747 I4?6o 207*27 .766 14-65 207.35 .769 14.03 207.14 1908.76 14-43 207.25 For comparison we have : 1874.1 i 4 ?o 206?! A. G. Leid. 1879.48 14.39 206.45 2n Bl It is more than probable that the apparent change in distance is due solely to the proper motion of the large star, although the other is bright enough to have some motion of its own. This is DM (34) 1049. The proper motion of Aurigae is given from meridian positions : Auwers 0*047 in 203?4 Boss 0.056 in 175.0 21 Burnham: Measures of Proper Motion Stars The only measures are : 1879.89 57?os i79"92 an P* I907-79 57-17 J79-93 31 P If the large star has any proper motion at all, it is evidently far below the errors probable in observations with any instru- ment ; and any result deduced from such positions has no mean- Lalande 10797 (7.4...I1.I) R. A. 5" 37 47' Decl. + 37 15' 1009.093 in49 129791 .802 111.27 129.09 .818 111.23 129.25 .821 111.46 129.06 ing. This appears from the transit observations . Auwers o".O2O in 272^9 Newcomb o.ooi in 352.9 Boss 0.002 in 180.0 Pi.xiiV. 146 (6. 7... 9-6) R. A. 5" 31 36' Decl. + 53 2/ 1907.731 70 58 97"30 .769 70-38 97-64 .788 70.60 97-55 .810 70.76 97-14 .845 70.70 97-55 These stars have exactly the same proper motion. 1891.26 70^78 97747 2n Eng 1907.79 70.60 97-44 5" P The small star is DM (53) 935- Both are in A. G. Harvard, but the difference in declination is erroneous. The proper 1909.63 111.36 129.33 The earlier measures are as follows : 1880.52 1 14 13 148734 211 Bl Therefore the proper motion of Lalande 10797 is : 07693 in I32?2 From meridian positions this has been given : Stumpe 07689 in I35?7 Porter 0.688 in 137.2 Lalande 10959 (8. 7... 9. 2) R. A. 5" 40 10" Decl. 15 6' A and B 1908.060 I58?35 142793 .159 158.00 142.90 750 157-73 142.77 Stumpe o?570 in i8i?4 Greenwich 0.510 in 179.2 Porter 0.539 in 182.1 Boss 0.512 in 178.7 For an independent determination of this proper motion here- 1908.32 158.03 142.87 A and C (9.7) 1908.060 22i?8o 168778 .159 221.72 167.76 .750 221.60 167.98 after, I have measured a faint star from each : A and a (12.7) 1907.788 301 oo 81792 8.000 301.50 82.15 8.063 302.20 82.69 1908.32 221.71 168.17 B and C are respectively SD (15) 1153 and 1150. The fol- lowing are the only other measures : AB 1894.04 I5792 I45"62 4n Eng AC 1894.04 221.03 168.70 311 Eng 1907-95 301-57 82.25 1009.859 302?20 82778 09.936 302.68 82.97 10.605 302.16 83.02 Comparing these positions with the recent measures, we have for the annual motion of the principal star : AB R. A. + o7o9i Decl. o7i7O AC 0.081 0.120 1910.13 302.35 82.92 B and b (12.4) 1907.788 I5962 I3>"'9 8.000 159-48 131-02 8.063 '59-58 131-33 + 0.086 0.145 Therefore the corrected proper motion of Lalande 10959 ' s : o7t69 in 149^3 This has been given from meridian observations : 1907-95 '59-56 131.18 1009.859 '5927 129^96 09.936 '59 25 129.06 10.605 '59-03 130.00 Porter 0.162 in 133.4 There are other small stars near, two of which I have measured : A and a (i3-l) 1910.13 159 '8 129-67 A and DM (53) 93O (9.0) oi A R A iff* A DPC! 78*8 A G Harv 1008.060 228?62 277II .159 227.10 26.68 .750 227.63 27.14 1909.89 76.2 98.0 P 1908.32 227.78 26.98 Burnham: Measures of Proper Motion Stars C and c (10.1) 1908.159 212^58 750 212.27 34"3i 34-74 1908.50 212.42 34-52 A and B arc given in A. G. Washington. 134 Tauri (5-O-- .10.4) R. A. 5" 42 m 48' Decl. + 12 37' i i 8" 69 118.97 119.04 Lalandc 11327 (7.0...) R. A. 5" 52 25' Decl. 4 39' A and C (9.0) 1907.865 297?03 i/8'.'75 1909.818 -859 .936 129.27 129.15 1909.87 129.22 118.90 The proper motion, if any, is small. No other measures. Auwers 0*032 in 252?o Boss 0.029 in 206.9 8 Aurigae (4.0... 9. 6) R. A. 5" 49"' 39' Decl. + 54 16' 7.964 7-997 8.022 206.85 296.82 296.85 177.80 178.23 178.64 1907.96 296.89 178.35 A and B (13.8) 1908.022 i5 4" 14 .079 .102 0-5 1.6 4-25 4. ii 1908.07 1.2 4-17 A and B 1907.845 7-879 27 i "25 27L35 H5"oa II5-32 8.000 271.03 115.40 8.044 271.40 115.12 1907.94 271.26 115.23 A and DM (54) 972 (9.3) 1907.845 66?62 io6:'9i 8.000 66.78 I97-I9 8.044 66-95 197-27 1907.96 66.78 197.12 DM (54) 972 and a (10.2) 1908.000 iii?35 93'-45 .063 in. 60 93-52 P 1908. 03 in.47 93.48 the proper motion of 8 Aurigae we have the following ures : 1888.24 270?oo H3"36 2n Eng 1894.26 270.37 114.31 2n Eng 1907.94 271.26 115-23 411 P These positions give for the corrected proper motion of the large star: 0*156 in I45?3 This is given from meridian observations : Auwers o"i42 in I5O?O Groombridge 0.157 in 148.7 Newcomb 0.157 in 138.4 Boss 0.153 in 145.8 The DM star is in A. G. Harvard, and the relative positions compared with the above measures (68?2 : iogl'6 for 1877) give Pa proper motion of o'.'i78 in I3i?3 which is doubtless in error, as there is no probability of the small star having any sensible movement. This will appear from later measures of both stars. AB is the double star, Aitken 322, discovered in 1002 (P G. C. 3082). The measures show that the small companion is moving with the principal star. For AC we have : 1892.11 295?68 I76"77 211 Eng 1907.96 296.89 178-35 4" P Therefore the proper motion of A is : 0*273 in i8s?o C is SD (4) 1308. I do not find it in any other star cata- logue. The motion of A from transit observations is given : Paris 0*244 in i8oo Porter 0.221 in 180.0 1 Geminorum (4. 3... 13.0) R. A. 5" 56 55' Decl. + 23 16' 96"57 96.68 96.68 96.64 1911.720 775 .813 26?28 26.03 26.18 1911.77 26.16 No other measures. The proper motion is given : Auwers o"o94 in i88?4 Hedrick 0.109 i' 1 !79- 2 Boss 0.108 in 184.4 Lalande 11471 (6.O. . .9.6) R. A. 5" 58'" 7' Decl. + 35 24' 1907.731 .769 .788 16:30 120:30 15.75 120.70 15.85 120.39 For the proper motion we have : 1892.26 I5i7 n6"o2 in 1007.76 15.97 120.46 3n Eng As the first position is only a single observation, the result- ing value of the proper motion may not be any better than the others. The results are : Measures Stumpe Porter Paris o'.'3O5 0.315 0.327 0.306 2i6?o 203.8 206.1 196.5 Burnham: Measures of Proper Motion Stars 40 Camelopardali (5 .4. . . ID. 5 ) R. A. 6" 4 54' Decl. + 60 2' 1908.769 .804 .824 3SS66 355-88 356.22 102763 102.65 102.73 1908.80 355-92 102.67 In the first instance this was taken by mistake for 4 Lyncis, which has a similar companion, with practically the same angle, distance and magnitude. There are no other measures. The proper motion of 40 Camel, is uncertain. Auwers o7oi6 in isi?8 Boss 0.048 in 115.8 Piazzi VI. 49 (7.O...IO.2) R. A. 6" io 55' Decl. + 5 8' 1907.769 246723 189786 .791 246.48 189.60 .810 246.48 189.50 The only measures are: 1891.21 247?ss I9I787 2n Eng 1907-79 246.40 189.65 3" P From which the proper motion of A is : Measures 07267 in 306^9 Stumpe 0.312 in 301.7 Porter 0.300 in 303.3 Boss 0.283 in 303.6 For a further independent value of the motion of A, I have connected two faint stars : A and a (13.0) 1911.796 11.832 12.066 264.83 264.83 S87so 59-15 57-86 1911.90 264.93 58.50 A and b (13.0) 1911.796 23i73 69711 11.832 231.30 69.64 12.066 231.17 69.22 1911.90 231.40 69-32 P Cant* Maj (2.0... 9. 8) R. A. 6* 17 24' Decl. 17 54' 1908. 102 3398o 185787 .192 339-86 185.97 The only measures are: 1879.89 339?os 184796 2n 1908.15 339.83 185.92 2n It is evident that the proper motion of the large star is smaller than the probable errors of observations with the micrometer, to say nothing of meridian instruments, and any result from either at this time would be of no certain value. The great dis- cordance in the values heretofore given by the authorities is sufficient evidence on this point. Auwers o"o2S in 293?6 Newcomb 0.009 in 294.2 Boss 0.007 in 270.0 The measures imply a larger motion, and nearly equal in both co-ordinates. Measures of these stars half a century hence will contribute something of value to this question. 6 Lyncit (6.O. . .9.0) R. A. 6" 20"' 22' Decl. + 58 15' 1907.074 ii6?62 I7975I 8.000 116.65 179-52 8.025 116.93 179.61 The small star is DM (58) 933. 1851.61 I2i?70 i887i7 311 O2 1861.35 120.90 186.56 in OS 1884.25 119.00 183.08 211 H2 1908.00 116.73 179-55 3" P These measures give for the proper motion of 6 Lyncis: 07307 in l8o?9 From transit observations we have: Auwers o?334 in l84?6 Porter 0.334 "i 184.7 Newcomb 0.326 in 179.6 Boss 0.330 in 181.6 10 Monocerotii (5.0. ..9. 2) R. A.6 h 22 m 3' Decl. 4 41' A and B 1907.769 256? 53 77"37 .772 256.72 .791 256.95 A and C (9.2) 1907.769 231 ?07 77.22 77-49 80:72 .772 231.00 80.62 .791 230.85 80.56 The only measures are: AB 1879.89 256^60 767g6 2n P 1907-78 256.73 77-36 3n p AC 1879.89 231.00 80.91 211 p 1907.78 230.97 80.63 3n P It is evident that the proper motion is much too small to be separated from the errors probable in any class of observations. Repeating these measures after a long interval will furnish data on this point The meridian positions give most contradictory results : Auwers 07032 in 326?4 Newcomb 0.016 in 67.3 Boss 0.014 in 347.9 Burnham: Measures of Proper Motion Stars 8 Lynci* (6.0... 9.0) R. A. 6" 26 28' Decl. + 61 35' A and B 1907.848 8.000 8.025 7977 80.02 80.02 I56:'84 157-21 156.81 1907.96 79-94 156.95 B and b (12.7) 1907.848 252?75 71:06 8.000 252.42 71.16 8.025 252.53 70.78 1907.96 252.57 71.00 The faint star between A and B is measured for ascertaining whether or not B has any motion. The measures of AB are : 1854.31 84?63 I44"53 3" 1884.25 81.92 151-27 2n 1907.96 79.94 156.95 3n OS H2 These positions make the proper motion of 8 Lyncis: 0:327 in 217^3 Some of the values from transit observations are : Auwers 0:352 in 2l6?6 Newcomb 0.335 in 214.4 Boss 0.342 in 214.6 DM (38) 1539 (6. 3... 10.7) R. A. 6" 28 m 18' Decl. + 3832' 1008.884 .898 .900 222:25 222 . l8 222.35 117.97 117.90 II7-79" 1908.89 222.29 117.89 The only other measures are: 1878.58 22i?74 118:60 2n Bl The large star is reddish (Groombridge 1190). The proper motion is given : Greenwich 0:030 in 195^8 Boss 0.036 in 165.0 V Geminorum (2. 5. ..II. 8) R. A. 6" 28 26' Decl. + 16 30' A and B 1907.692 295?45 135:51 .772 295.13 135.57 .807 295.20 135-36 A and C (11.5) 1907.692 33525 143-60 772 335-40 143-50 807 335-23 143-41 1880.03 1907.76 2947o 295.26 135-48 in P P 1880.03 1907.76 335-50 335-29 141.74 143.50 in 311 ca oo. Unfortunately the early positions depend on a single night. This will be remedied by measures after another quarter- century interval. AB AC The mean motion from both stars is: Measures 0:083 in I4O?6 Auwers 0.047 in 140.0 Newcomb 0.067 in 135.2 Boss 0.065 in 136.5 50 Aurigae R. A. 6" 30 46" Decl. + 42 36' A and B (10.6) 1907.791 iog?23 52:69 .810 109.08 52.32 .845 IQ9-45 52-53 1907.81 109.25 52.51 A and C (11.3) 1907.791 74?75 99:40 .810 74-83 99-42 -845 75-35 99-32 1907.81 74.98 99.38 No other measures. The proper motion of 50 Aurigae is small. Auwers o"o6p in 192?! Boss 0.061 in 174.8 This was measured in the first instance by mistake for 58 Aurigae. The similarity in the arrangement of the three com- ponents will be noticed. From the Astrographic Catalogue we have for AB : 1894.95 no?o 53:25 Donner 5& Aurigae (5.2) R. A. 6" 42 17' Decl. + 41 55' A and B (10.2) 1907.807 I02?88 40:60 .810 103.06 40.71 .845 103.05 40.70 1907.82 103.00 40.67 A and C (n.8) 1907.807 75?o6 117:78 .845 75.72 117.67 1907.82 75.84 117.72 No other measures of C. For AB we have : 1888.28 107^67 41:03 211 Eng 1894.25 106.15 40.82 2n Eng 1894.95 106.3 40.66 Donner 1907.82 103.00 40.67 3n fj A mean of the first two and the last gives the proper motion of 58 Aurigae: 0^156 in 189^2 Biirnhain: Measures of Proper Motion Stars This is given from meridian positions: Groombridge 0^124 in i88?8 Auwers Porter Paris Newcomb Boss 0.158 in 214.5 0.145 in 204.6 0.131 in 180.0 0.150 in 202.4 0.136 in 187.5 Oxford (Z26) 19211 (12.4) R. A. 6" 45 47:6 Decl. + 25 4' 4^2 This place for 1900 is from an Oxford astrographic plate taken 1908.08. From a comparison of this with an earlier plate, the proper motion is given : o72O5 in 2Oi!o A and B (10.5.. .12.0) 1910.760 I07?36 59799 777 107.72 60.08 .780 107.28 60.51 1910.77 107-45 60.19 A and DM (25) 1486 (9.5 m) 1910.760 I07?43 141*20 777 107.75 Mi 20 .780 107.08 141.60 1910.8 1900. 1910.77 107-43 I4L33 A and DM (25) 1478 (8.5) A R. A. + 49! 3 A Decl. + 7676 p 49.4 82.8 A. G.-Oxf. The last comparison star is A 513. Groombridge 1228 (6.0... II. 3) R. A. 6" 47"' 44' Decl. + 70 58' 1910.049 356?35 n6782 .091 093 356.55 356.48 116.73 117.50 1910.08 356.46 H7-02 The large star has no sensible proper motion. Groombridge o7o22 in 163^3 Probably unchanged. The prior measures are discordant in distance: 1878.24 356?33 117796 in Bl 79-81 355-95 116.01 in Bl 79-83 355 58 "7.41 in Bl 80.19 356.13 116.66 in Bl 39 Geminorum (6. 4... 12. 4) R. A. 6" 5 1 " 27' Decl. + 26-14' 1910.760 .835 28?2 28.1 27.6 28735 28.06 28.21 1910.79 28.0 28.21 No other measures. The proper motion of 39 Geminorum i> given : Auwers o7io8 in 294?7 Boss 0.183 in 298.0 Nova Geminorum No. 2 R. A. 6" 49'" 12' Decl. + 32 15' A and C (3. 8... 12.0) 1912.197 98^87 79^46 .236 98.68 79.60 .255 98.78 79.6o 1912.22 98.78 79-55 A and B (13.5) 1912.236 l6?3 1 1 78s .255 15-1 11.83 1912.24 16.2 11.84 The first measure of the new star was made on the night of March 19 when the brightness was about maximum. At this time the new star was a most brilliant red. Later it had de- clined to about 6 m. The place given above is for 1912. R Geminorum (Var. ..11.4) R. A. 7" o" 1 8" Decl. + 22 53' 1910.049 200?IO 172767 .093 200.75 172.30 1910.07 200.42 172.48 The principal star, which is variable, is DM (22) 1577. Probably fixed. I880.05 200?26 173^73 211 Rl Piazzi VI. 329 and 332 (8.0... 8.0) R. A. 7" i 1 " 9" Decl. + 15 43' A and B 1908.102 o8!84 172707 .159 98.92 171-73 .192 98.50 172-03 1908.15 98.75 171.94 B and C (11.3) 1908.102 87^05 88788 .159 87.12 88.95 .192 87.07 89.00 1908.15 87.08 88.94 The only direct measures of AB are : 1891.21 98?6s 172750 211 Eng 1908.15 98.75 I7I-94 3ii P Both stars are found in many of the star catalogues, from all of which it appears that there has been no relative motion. The relative positions in A. G. Berlin, Paris and Cincinnati, in con- nection with the more recent measures, show a common proper motion. From transit positions the proper motions arc given : A B Porter o7222 in 191^6 07214 in igo4 A. G. Ber. 0.232 in 102.6 0.197 in 188.0 Paris 0.262 in 180.0 0.250 in 180.0 There are no other measures of the faint star C. 26 Burnham: Measures of Proper Motion Stars 20 Monocerotit (5. 8... 12. 9) R.A.7 h 4 m i6 s Decl. 44' A and B 1909.838 239?23 ss"o2 09.936 237.72 S4-4S 10.093 238.50 54.51 The other measures are : 1886.20 107^65 127752 2n Eng 1894.24 107.70 127.54 2n Eng 1907.82 107.81 127.43 3" P It is a little strange that the distant small star should have exactly the same proper motion as the large star, if that motion is real as shown by meridian observations : Auwers o'.'iO3 in 312^6 Boss 0.016 in 184.9 To show this, I have connected each with a fainter star in the field. It is very probable that A and B have no sensible motion. A and a (n.6) 1907.845 I7?93 49'.'i2 .848 17.55 49.23 .865 16.87 48.67 1909.96 238.48 54.66 A and C (10.7) 1909.838 339-40 i8s"99 09.936 339-00 186.21 10.093 339-05 186.31 1909.06 339-iS 186.17 C and D (12.2) 1909.936 I26?os 85.47 10.093 126.05 85.64 1907.85 17.45 49-01 B and b (u.o) 1907.845 I92?75 93"i5 .848 192.42 93.54 .865 192.77 93-50 1910.01 126.05 85.55 The proper motion of 20 Monocerotis is given : Auwers o"2O7 in 358?8 Paris 0.209 in 360.0 Porter 0.224 in 355. o Boss 0.217 in 360.0 The following are the prior measures of AC : 1886.23 339?62 I9o"s6 2n Eng 1894.27 339.6o 189.29 2n Eng A mean of these compared with the present position gives for the proper motion of the large star : o"205 in 361 ?3 As a further check on the relative motion, I have measured a small star from each. 22 Monocerotit (4. 2. ..13. 7) R. A. 7" 5'" 44" Decl. o 18' 1910.780 I7o?4 31783 10.933 169.7 32.12 11.142 170.3 32.09 1907.85 192.65 93.40 Oxford (Z 26) 20428 (8.2) R. A. 7" 7 49! 1 5 Decl. + 25 10' s8"7 This is identical with the 8.3 m star, DM (25) 1613. The place given here for 1900 is from an Oxford astrographic plate taken 1908.08. Compared with a prior plate, the proper motion is: 0^368 in 255?7 A and B (11.9) 1910.760 156^21 5o''6s .780 155-96 50.16 .856 155-63 50.03 1910.80 155-93 50.28 A and DM (25) 1612 (9.4) 1910.85 249?23 227^41 p 1855. 252. 252. DM The last star is not in A. G. 44 Camelopardali* (7.5. . . 1 1 . l ) R. A. 7" 8 m 14' Decl. + 59 8' 1910.148 7?45 i68"gi .164 7.64 169.22 .203 7.32 168.76 1910.95 170.1 32.01 The faint companion first noted by Jonckheere. No other measures. The proper motion of the large star, if any, is small : Auwers o"o34 in 322?: Boss o.oii in 344.8 Bradley 1048 (7. 3... 10.8) R. A. 7" 7'" 7' Decl. + 24 55' A and B 1907.807 I07?7o 127^62 .845 107.88 127.07 .848 107.85 127.61 1910.17 7-47 168.96 Change in angle from proper motion. 1878.52 6?28 i6S':8s 2 n Bl The proper motion of A is small : Auwers o'.'o82 in 248?6 Groombridge 0.033 in 254.4 27 Bitrnhatn: Measures of Proper Motion Stars DM (22 ) 1620 (7-2. . .10.0) A and D (II. i) R. A. 7" 8 23' Decl. + 22 10' 1907 -772 .810 76? 76. 40 40 124^75 125.22 1908.769 263 30 94*49 997 76. 93 124 74 .788 .843 264.03 263.90 94-52 94.88 Ton^ A .8lO and E (10.9) } f ro7 i-?8"8^ 1908.80 263 -74 94-63 jyu/ 7 997 o iu -yo 311.02 * *j. u *} 138.29 The only prior measures are: 8.000 3". 18 139 05 1879.52 263?; o 95"40 2n Bl The results of all the measures are : Further observations are needed. The principal star has AC l8 79- 98 22?7O 97' 02 in P 1 been called red, but only yellowish now. 1907. 89 23.37 98. 48 4" P AD 1879.99 76.70 123 15 2n P 1007.86 76.58 124 90 3" P Oxford (Z26) 20681 (IO.I) AE 1879 99 309.95 138 98 2n P 1907 86 311.04 138 72 3 n P R. A. 7" lo 46:57 . + 27 3' 3278 This is the 9.2 m star, DM (27) 1350. The place for 1900 is from the Oxford Astrographic plate taken 1908.08. From a comparison with an earlier plate the proper motion is found : 07 13 1 in i8o?o A and C (9.9- -12-7) 1910.760 .780 .856 I34?93 134-73 I3S -97 29*02 29.34 29.46 1910.80 135-21 29.27 There is a 14.5 m star 8" or 10" from A. Tl Carl* Majorit ( 2 . 5 . . . 8 . o) R. A. 7" 19 21' Decl. 29 4' 1909.206 .227 28S? 12 285.35 178772 178.71 p" 1909.22 285.23 178 .71 The only prior measure is the following: 1880.00 28s?o 178765 2n Obviously these stars have no proper motion. This is also apparent from the meridian observations : Auwers o7o3O in 2o8?o Newcomb 0.008 in 31.0 Boss o.oio in 293.6 There is a large error in the relative positions from the Washington zones. 1849 285^7 18573 Wash.Z. 1875 285.5 178.6 Cord. G. C. P Cant* Minor!* R. A. 7" 20" 39" Decl. + 8 32' A and C (11.2) 1907.772 23?43 98705 7.810 23.23 08.23 7-997 23.35 9894 8.000 23.48 98-69 From these measures the motion of A is : AC AD AE R. A.- -07058 059 .066 0.061 Decl. 07032 .023 .068 0.041 Giving for the proper motion of {$ Canis Minoris: 07073 in 236!: From meridian positions we have : Auwers 0^069 in 247?! Newcomb 0.066 in 225.4 Boss 0.066 in 229.6 22 Lynch (5.5.. .10.3) R. A. 7" 20 m 49* Decl. + 49 54' 1909.703 303:78 169717 .722 303.70 169.42 744 303-70 169.20 1909.72 303-73 169.26 The small star has been previously measured as follows: 1888.29 303^87 165792 2n Eng 1894.25 303-77 167.27 2n Eng From the change shown in these observations, Engelhardt inferred that the small star, after allowing for the accepted movement of 22 Lyncis, had a large proper motion of o7ioo, and evidently this must be the case if the measures were sub- stantially correct ; or else the motion of the large star as de- rived from meridian observations is much too small. As the chances are enormously against a star of this magnitude having any sensible movement, it was carefully re-measured. Ob- viously the suspected motion is not confirmed by the recent observations. One or the other of the early positions must be affected by a considerable error, accidental or otherwise. If we reject the first, and compare the other with the results given above, we have substantially the proper motion of A as given in the star catalogues. Measures Groombridgc Auwers Boss 07129 in I20?8 0.135 in 124.8 0.089 >n 154-3 0.145 ' n 125.8 28 Burnham: Measures of Proper Motion Stars Therefore it is practically certain that the small star, like nearly all other of this magnitude, has no sensible movement. This will appear independently hereafter from the following: B and C (12.0) 1909.744 I5I7 110*64 .760 150.05 111.07 .763 150.28 110.82 No other measures. The proper motion of the large star is given : Auwers o"io5 in ig6?9 Boss 0.119 in !93-o Newcomb o.m in 191.1 25 Monocerotis (5.0... 10.7) R. A. 7 h 3i m i9 8 Decl. 3 51' A and C 1909.838 34967 I2i"62 859 349-57 121.86 933 349-49 121.74 I909-75 150.17 110.84 62 Geminorum (4.5...IO.6) R. A.72i'34' Decl. + 32!' A and B 1909.780 291^10 2i4"o6 .818 291.20 213.95 .821 291.06 213.16 .838 291.40 213.33 1909.88 349.58 The small star is SD (3) 1978 (9.8) ures are: 1887.18 349?07 122^70 1894.27 349.38 122.38 121.74 The previous meas- 2n Eng 2n Eng 1909.81 291.19 213.63 bis star has been previously measured as follows : 1886.22 292^85 2ii!'s6 2n Eng 1894.25 292.15 212.57 2n Eng Vs these two positions showed a much larger relative change than could be accounted for by the accepted proper motion of 62 Geminorum, Englehardt inferred (A. N. 337*3) that the small star had a motion of o''i52 in the direction of 239. The recent measures do not support this change, and are not accordant with one or the other of the early positions. It would appear probable that there is some accidental or other error in one. A comparison of the position of 1886 with that of 1909 gives for the proper motion of 62 Geminorum: o".22$ in 45?2 This is in substantial agreement with the values found from meridian observations : As a further test of any motion in B I have connected a third faint star. B and C (12.2) 1909.821 267? 10 104*59 .838 267.33 103.76 .859 267.14 104.07 A mean of the first two measures compared with the last in- dicates a smaller proper motion of 25 Monocerotis than that given from meridian observations. Measures o!'o58 in 3O5?4 Auwers 0.124 in 284.5 Boss 0.073 in 284.4 The measures should be repeated later on. As a further check on the motion, I have measured one of the nearer stars. Auwers (Brad.) 0:227 in 31 ?3 Auwers (F. C.) 0.238 in 34.5 Paris 0.248 in 34.7 Boss 0.236 in 39.1 . 1909.84 267.19 104.07 itkcn has recently discovered a close companion to principal star: the 1910.19 n4 U Geminorum R. A. 7" 28" 32' 2"8o 2n (4-2. ..13-2) Decl. + 27 10' 1911.104 145 .164 1911.13- 458 45-9 45-4 45-7 46'.'I 3 46.24 45-94 46.10 1909.838 .859 933 A and B (13.0) 26>?9 266.4 266.7 28'? 4 8 28.22 27.94 1909.88 267.0 28.21 a 75 Geminorum (4.5...II.O) R. A. 7" 35" 49' Decl. + 29 10' 1909.818 .821 -859 3i6?37 316.33 316.57 182.13 182.09 1909-83 316.42 182.17 The earlier measures are much too discordant in distance to be made use of at this time in finding the proper motion of the large star. Evidently the mean value cannot be used. Further measures, after a suitable time interval, should be made. The 1877.29 1877-84 1878.83 proper 3I548 315.05 315.25 motion of 75 Auwers Paris Porter Boss 178^40 177.91 179-57 Geminorum 0^230 in 0.204 in 0.234 in 0.247 in in in in is given: i6 5 ?2 156.5 165-4 163.7 Bl Bl Bl 29 Burnham: Measures of Proper Motion Stars S Geminorum (Var. ..ll.i) R. A. 7" 35" 50' Decl. + 23 44' 1909.818 09-933 10.091 I22?87 122.73 123.15 70741 70.72 70.03 1909.95 122.92 70.38 The principal star, DM (23) 1796, is variable. For com- parison we have: 1878.24 I2o!88 70^32 in Bl 1878.88 121.85 69.34 in Bl DM (33) 1587 (7.5. ..n.6) R.A.7'40 m 24' Decl. + 33 9' 1908.769 .785 .788 45-01 45-30 44-93 44-42 44-25 44-68 1908.78 45-08 44-45 The only prior measures are too discordant in distance for any inference as to real change. 1879.31 47?2l 44*29 in Bl .83 46.78 43.34 in Bl Oxford (Z 26) 22647 (n.o) R. A. 7* 40 44:93 Decl. + 26 57' 27^2 This star is identical with DM (27) 1477 (9.5). The place (for 1900) is from an astrographic plate taken 1908.08. The Oxford proper motion is : 0*165 >n 2Oi?9 A and B (9.6.. .12.7) 1910.777 295?35 45*26 .856 294.47 44.97 933 295.00 44.98 1910.86 294.94 45-07 A and C(n.8) 1910.777 i89?8s 55796 .856 189.80 54.79 933 189.77 55-41 1910.86 189.81 55-39 A and DM (27) 1470 1910.8 AR. A. 59? 8 A Decl. + 35*9 1900 60.0 36.2 A. G. Oxf. Lalande 15219 (6. 2... 6. 7) R.A.742"i8' Decl. 15 43' A and C 1909.167 3"?04 128^42 .170 .186 1009.17 310.75 3II.Q5 310.95 128.96 128.66 ta8.68 In the first measures the distances differ as much as 1*3, so the close agreement with the present result is rather accidental. 1864.22 3io?68 I28"?6 3n Kn I do not find any proper motion assigned to cither of these stars. The smaller is Lalande 15213. Some of the meridian positions are : 1877 3io?7 12879 Cord. G. C. 1895 311.1 129.0 A. G. Wash. I have measured a new companion to the principal star : 1909.167 .170 .186 A and B (13.7) 548 54.4 53-4 10764 10.38 10.55 1909.17 54-2 10.52 Piazzi VII. 215 (6. 5... 10. 7) R. A. 7" 43 m 19' Decl. + 33 32' 1909.821 09-933 10.093 I4588 145.71 145-98 78702 78.05 77-93 1909.95 145-86 78.00 The early measures are discordant in distance. Probably fixed. 1878.90 145^65 78728 in Bl 1879-35 I45.50 77-14 m Bl Oxford (Z 26) 22642 (10.9) R. A. 7" 45" 14:33 Decl. + 26 52' 2177 This place (for 1900) is from a plate of the Oxford Astro- graphic Catalogue taken 1908.08. From a comparison of this with an earlier photograph, the proper motion is given : 07184 in I46?o There are no catalogue stars near enough for direct com- parison with the micrometer. A and B (9.9.. .10.9) 1910.777 306? 58 182725 -933 306.28 182.49 1910.85 306.43 182.37 1910.777 .933 A and C (10.8) 2548a 254.90 192773 191.20 1910.85 254-86 191.96 Lalande 15290 (8. 2... 13. 3) R.A.7 b 4 5 m 53' Decl. + 30 58' 1908.326 .900 .974 1908.73 4?8o 4.20 3-95 67.96 67-87 67.65 Burnham: Measures of Proper Motion Stars No other measures. This star has a large proper motion : Stumpe i"952 in I57?4 Porter 1-947 in 158.7 Lalande 15394 (7.9...IO.I) R. A. 7" 47 55' Decl. + 19 34' A and B 1 907 . 788 255 ? 03 86"82 .807 255.31 86.38 845 255.40 86.36 ty* Cancri (7.O...IO.O) R. A. 8" 2" 58' Decl. + 26 12' 1910.835 so?93 87"so .856 50.87 87.73 931 50.85 87.54 1910.87 50.88 87.59 No other measures. The proper motion of the bright star is : Auwers o"o7o in 23i?4 Boss 0.089 in 244.8 i() ! Cancri (6. 1... 12. 5) R.A.8"3 m i3' Decl. + 25 52' A and B 1910.835 293?5i 73^76 856 293.30 73.92 931 293.55 73-43 1907.81 255.25 86.52 A and C (10.4) 1907.788 8s?30 I22"45 .807 85.48 122.26 .845 85.58 122.48 1907.81 85.45 122.40 A and a (n.6) 1907.807 36^63 36^75 .845 36.60 36.84 1910.87 293.45 73-70 A and C (n.o) 1910.835 2ii?9i ii7"66 .856 210.93 117.48 .931 211.76 116.88 1907.82 36.61 36.80 The other measures are : AB 1893.24 250?97 88:'o6 2n Eng AC 1893.24 89.02 124.01 2n Eng The proper motion of the principal star from the measures of both companions is : o"497 in I7o?4 It is given from transits: Stumpe o"4i6 in 164^9 Porter 0.446 in 167.2 There are no other measures of the small star near A. Oxford (Z 26) 23412 (10.1) R. A. 8" o m ss!78 Decl. + 25 49' 24^2 From the Oxford Astrographic Catalogue; place for 1900 from plate taken 1908.08. This is the 9.2 m star, DM (25) 1848. The Oxford proper motion is : 0*203 in I9O?3 A and B (9.2.. .12.2) 1910.835 io?45 ii2:'82 .856 10.75 112.81 .931 11.51 112.96 1910.87 211.53 II7-34 No other measures. The proper motion is : Auwers 0^364 in I95?4 Boss 0.363 in 192.9 Piazzi VII. 321 (7.o...ii.o) R. A. 8" 4 m 7* Decl. + 32 50' A and B 1907.807 320?77 53"27 8.022 321.90 53-40 8.063 321.25 53.48 A and C (10.4) 1907.807 757O 225"2i 8.022 75.70 225.37 8.063 75.83 225.51 We have the following measures : AB 1857.26 280? 10 58'' 04 in O2 1881.28 298.72 52.83 in O2 1907.96 321.31 53-38 3n p AC 1850.72 83.95 193.04 2n O2 1857.26 82.73 197.00 in O2 1881.28 78.97 210.46 in O2 1907.96 75.74 225.36 3n p- These positions give the motion of A: AB R. A. 0^469 Decl. 0^623 AC 0.461 0.617 1910.87 10.90 112.86 A and DM (25) 1849 (9- 5) 1910.835 I30?o8 254^9 .856 129.67 254.95 .931 129.98 255.65 1910.87 129.91 255.13 The last comparison star is not in A. G. The DM places give, n /rfic n f\*>(\ . . , 131 : 248". While this is only roughly approximate, it is worthy of note that the proper motion of A would change the angle, and not the distance sensibly. Hence the corrected proper motion is : o"775 in 2i6?9 Burnham: Measures of Proper Motion Stars Meridian positions give : Porter o''8u in 2i6.g Paris 0.814 in 213.2 Kustner 0.807 in 217.0 Boss 0.808 in 214.7 Lalande 15976 (7. 5... 9.0) R. A. 8" 6" 32' Decl. + S728' A and B 1907.791 i6i?28 131^83 .810 .964 161.86 161.88 132.21 132.37 1907.85 161.67 132.14 B and C (ll.o) 1907.810 I52?6i 100*39 7.964 152.62 IOO.I2 8.769 152.60 IOO.64 8.785 153.58 IOO.4O 1908.33 152.85 100.39 It is not probable that B has any sensible proper motion. For greater certainty hereafter, I have connected a third faint star. The measures of AB are: 1893.25 i64?37 134*28 2n Eng 1907.85 161.67 132.14 3n P Combining these positions with that in A. G. Hels. for 1871, to give a longer time interval, we have for the proper motion of the large star: 0*432 in 23O?4 Some of the meridian values are: Stumpe 0*408 in 230?! Porter 0.394 i 232.3 Paris 0.359 in 227.6 Bradley 1169 (7. 3... 9. 2) R. A. 8" 7 m 2 1 Decl. + 59 31' A and B 1909.071 8?8o 96*32 .091 093 8.97 9-25 95-88 96.16 1909.08 9.01 96.12 A and C (8.6) 1909.071 .091 .093 3o8?20 308.23 308.42 223*96 223.78 223-54 1909.08 308.28 223.76 A and D (9.2) 1909.071 .091 .093 6330 63-50 63.18 236*74 236.63 236.33 We have the following earlier measures of B and C : AB 1851.27 8? 50 95^02 in O2 1879.81 8.75 95.68 in Doub. AC 1851.27 308.37 222.41 in O2 1879.81 308.25 223.00 in Doub. These measures give for the annual movement of the prin- cipal star : AB R. A. 0*017 Decl. 0^015 AC 0.020 0.013 0.018 0.014 The value derived from meridian positions seems to be too large : Measures 0^023 in 232?! Auwers 0.045 in 228.5 Boss 0.038 in 165.0 The distances in the early measures .of AD are inconsistent with each other, and with the later results. Unfortunately the Pulkowa positions depend upon a single night, and therefore may have some accidental error. The meridian positions arc still more uncertain. The several values of the relation of these stars are as follows : A and D 1842. 62?3 236*5 O. Arg. N. 1851.27 62.81 234-98 in OS 1873- 63.1 238.0 A. G. Hcls. 1879.81 63.00 234-88 in Doub. 1908.08 63-33 236.57 3n P It is evident that no use can be made of these positions for getting the relative motion. They are too inconsistent to warrant the selection of one or more of them at this time, and the rejection of the others. It may be that the small star has some proper motion of its own. Measures in the future will settle this question. With this in view I have connected it with two small stars : D and E (9.7) 1909.109 I07?oo 156*02 .112 108.27 155-75 .128 108.03 155-64 I909.II 108.07 155-80 D and F (11.2) I909.II2 i66?47 173*23 .128 166.20 172.88 1909.12 166.33 173.05 1909.08 63-33 236.57 The three comparison stars B, C, and D are respectively DM (59) "53. US 2 , and 1155. The magnitudes given are those of the DM. Oxford (Z 26) 24255 (9.6) R. A. 8' 16 24:71 Decl. + 26 57' 12*8 From the Oxford Astrographic Catalogue; plate taken 1908.19. Place for 1900. From this and an earlier exposure, the proper motion is given : 0*164 in I92?7 This is identical with the 8.8 m star, DM (27) 1598. Burnham: Measures of Proper Motion Stars A and B (12.4) & Hydros (4-4...IO 6) igii 164 2OO 219.85 46T52 45.89 R. A. 8" 31 18' Decl. - f\ 7' 1911 18 219 87 46 20 1909 -093 3I2?22 243 "77 .170 3".94 243 50 .186 3H.98 243 56 Oxford (Z 26) 24256 (9.8) 1909 .15 312.05 243 .61 R. A. 8" i6 m so!66 Decl. + 27 o' I7?o This is closely following the last star, and is the 9. 4m star DM (27) 1600. Place for 1900. The Oxford proper motion A and B (13.0) 1911.164 226?3 30^75 1908. 18 1911.14 Oxford 24255 and 24256 A R. A. + 25! 95 A Decl. + 184^2 25.97 183-7 Oxf. Oxford (Z 26) 23968 (11.3) R. A. 8" 17 24?59 Decl. + 25 28' 36% The place for 1900 is from an astrographic plate taken 1908.19. From a comparison of this with an earlier photo- graph, the proper motion is found : o"26o in i8o?o This is identical with the 9.1 m star, DM (25) 1910. A and B (9.5.. .11.5) 1910.142 I7423 146*05 Lalande 16494 (7. 5... 9. 5) R. A. 8" i8 m 26' Decl. o 45' 1907.845 7.865 8.022 44-75 44-58 44.80 154.10 153.85 res are: 4552 I53''2S 2n 44-71 153-93 3n 1891.21 4552 153*28 2n Eng 1907.91 These positions give for the proper motion of A : 0*132 in 152^4 This is considerably smaller than that given from meridian positions : Stumpe 0*271 in I47?2 Porter 0.220 in 149.7 A. G.Nico. 0.235 in 151.4 As it is very improbable that B has a proper motion of more than 0*1, I have measured a third very faint star. B and C (13.2) 1907.865 I2?I7 65*48 8.022 14.00 66.59 8.102 13.53 66.69 The small star is DM (6) 1997 (9.3). The only other posi- tion of this depends upon a single measure: 1879-25 3"S 243^88 in p" The proper motion of the large star is given from meridian observations : Auwers o"o97 in 269?! Newcomb 0.072 in 258.6 Boss 0.074 in 261.5 39 and 40 Cancri (6.7. . .6.9) R. A. 8" 33 12' Decl. + 20 26' A and B 1907.845 8.000 8.022 151.05 151.23 149*61 149-53 149.42 1907.95 151.14 149-55 A and a (9.1) 1907.845 8.000 8.022 309os 309.48 309.23 i33"6i I34-30 134-19 1907.95 309-25 134-03 A and b (9.0) 1907.845 8.000 8.022 no68 110.47 110.90 134-91 I35-I9 1907.95 110.68 135-n B and c (10.8) 1907.845 H782 8.000 147-33 8.022 147.72 139.21 139-57 I907.95 147-62 I39-36 1908.00 13-23 66.25 Some of the recent positions of the large stars, including all the direct measures are : 1881.4 I5i4 I5o''i A.G.Berlin 1887.27 151-25 149-75 2n Eng 1894.2 151.2 150.3 Greenwich 1007-95 I5I-I4 149-55 3n P It is evident from these positions that the relative change, if any, is less than the usual errors of the observations. The proper motion from transit positions are given : 39 Cancri o".io7 in 279?7 Auwers 0.041 in 247.0 Hedrick 0.044 in 239.9 Boss 40 Cancri 0.065 in 291.7 Auwers 0.020 in 261.7 Hedrick 0.037 in 242.3 Boss 33 Burnham: Measures of Proper Motion Stars For the small stars near A we have : B and b (13.5) A and a 1907.865 101^67 95''o3 1887.27 1894.23 309^ 309. 13 15 134 !34 "17 2n .10 2n Eng Eng" 8.249 8.291 101.72 102.65 94-22 94-49 1907-95 309- 25 134 03 3n P 1908.13 102. or 94.58 A and b The measures of AB are : 1887.27 no? SO 135 :o3 2n Eng 1888.27 65^ 77 102:96 2n Eng 1804-23 no. so 134 .92 2n Eng 1894.23 65- 83 103.56 2n Eng 1907.95 no. OB 135 .11 3n P 1907.97 66. 04 104.66 4" P Obviously there is no certain change. It is somewhat remark- able that these small and distant stars should have the same movement as the large star if the motion of that is large enough to be approximately determined in the time interval. Later measures will show this, and the relative motion of AB. There are no other measures of the small star near B. Lalande 17046 (8.1. ..9. 5) R. A. 8" 33 17' Dec!. + 11 "58' A and B 1907.769 32370 135:71 .807 .810 323 323 91 -63 135-47 1.15-23 1907.79 323 75 135-47 B and C (. 1907.769 .807 .810 12 13 13 77 23 36 30:43 30.30 30.37 1907.79 13.12 30.37 No other measures of C. B is DM (12) 1887. The prior measures are: 1891.22 321 ?os 130:20 211 1907.79 323.75 135.37 Eng P The change in the proper motion is small : Measures 0:490 in I92?8 Stumpe 0.542 in 198.0 Porter 0.511 in 198.2 Paris 0.502 in 180.0 Y Cancri (5.0.. .9.2) R. A. 8" 36 m 20' Decl. + 21 " 54' A and B 1007.845 66?02 104:51 7.865 65.93 104.33 8.022 66.25 105.03 8.159 66.05 104.78 1907.97 66.04 104.66 A and a (13.0) 1907.865 25723 103:20 8.022 257-70 J03-97 8.063 257-75 102.70 8.159 257-55 103.16 1908.03 257.56 103.26 A mean of the first two compared with the last gives for the proper motion of the large star: 07087 in 262?7 The meridian observations give a larger motion : Auwers o"l25 in 254^8 Paris 0.115 in 252.8 Newcomb 0.108 in 246.3 Boss 0.113 in 243.8 It is practically certain that B has no sensible motion. To show this independently I have measured very small stars from both A and B. S Cancri (Var.. .10.8) R.A.8"37 m 5 Decl . + 19" 28' 1908.974 9.109 9.128 269.60 269.53 74:65 75-iS 75.i8 1909.07 269.72 75.00 The principal star is not known to have any proper motion. The difference in the measures is probably accounted for by errors of observation. 1878.32 209?27 76:16 in BI 1879.86 268.59 77.04 in Bl Piazzi VIII. 174 (8.0... 9.3) R. A. 8" 43 ra 45' Decl. + 48 i' A and B 1907.810 321 ?ss 8.291 8.326 321.55 321.85 164:02 164.64 164.46 1908.14 321.65 A and C (9.4) 1907.810 28o?28 8.291 280.48 8.326 280.40 164-37 221.79 221.62 1908.14 1008.291 1908.14 280.39 B and C 232.54 221.65 146:38 146.20 The second position of BC is computed from the measures of AB and AC. B and C are respectively DM (48) 1692 and 1691. 34 Burnham: Measures of Proper Motion Stars 1873.2 320?8 I55"9 A. G. Bonn 1893-24 321.38 161.77 2n Eng 1908.14 321.65 164-37 3n P 1893.24 279.68 220.43 2n Eng 1908.14 280.39 221.65 3" P With prior positions we have: AB AC The measures give for the proper motion of the large star : AB R. A. + o7o6S Decl. o'fi68 AC 0.049 0.192 0.058 0.180 Therefore the proper motion of A is : 0^189 in 162?! The meridian observations give a larger value : Stumpe o"2SO in I75?6 Paris 0.264 in 180.0 Porter 0.226 in 180.0 There is certainly some motion in R. A. Combining the A. G. Bonn position with the measures of AB gives: 0^234 in iss?3 DM (20) 2243 (9.0... 11.2) R. A. 8" 49 49" Decl. + 20 19' 1908.769 .898 974 2S388 254.10 254.20 140*92 140.99 140.78 140.90 1908.88 254.06 The principal star is red and variable. The only other posi- tion is: 1878.61 254?os 141778 2n Bl 10 Ursae Major!* (4.2. . .9.6) R.A.8"52 m 5i' Decl. + 42 15' A and B 1907.788 200?22 I3o7o6 200.30 129.77 129.84 8.000 8.022 200.40 A and C (10.5) 1908.022 io8?oo .063 109.00 1 he following are all the measures : A and B 222.97 1851.76 206?32 150733 2n O2 1881.29 203.48 139-64 in 02 1884.36 203 . 40 138.63 2n HX 1888.27 202.48 136.46 2n Eng 1907.94 200.31 129.89 3" P A and C 1851.18 4?3S 204765 in 02 1881.29 111.07 214.96 in O2 1908.04 108.95 223.16 2n P From these positions the corrected proper motion of the large star is : AB R. A. 07384 Decl. 07231 AC 0.434 0.210 0.409 0.221 This movement is therefore: 07465 in 24i?6 The motion from transits is too large: Auwers 0*515 in 239?8 Groombridge 0.510 in 245.1 Paris 0.512 in 237.6 Newcomb 0.502 in 239.0 Boss 0.504 in 238.8 I have measured another star from A : A and a (10.8) 1908.000 H93S 141787 .022 119.93 142.09 .063 II9-93 141-65 1908.03 H9.74 141.87 The only other position of this is from the Astrographic Catalogue: 1893.30 I2i?7 140704 Donner 75 Cancri (6.2. . .9.3) R. A. 9" I 43' Decl. + 27 7' A and B 1907.807 39?83 iio78f 8.022 8.025 39-93 39-92 110.88 110.85 02 02 Doubiago Eng I907-95 39.89 110.86 B and C (10.5) 1907.807 33796 128766 8.022 338.20 129.31 8.025 338.17 128.57 1907-95 338.li 128.85 The prior measures of B are : 1851.73 43?25 92760 2n 1861.27 42.60 95-86 in 1879.18 41.12 101.60 3n 1887.38 40.97 104.29 2n 1907.95 39.89 110.86 3n P From these positions the proper motion of 75 Cancri is : 07341 in 203?3 This has been given from meridian observations : Auwers 07402 in 2Oo".o Porter 0.398 in 200.0 Boss 0.404 in 196.7 As evidence of the fixity in space of B, I have measured a third star. The small star B is DM (27) 1716. My later measures are : 1911.222 39^83 111789 .260 39-42 112. 21 1911.24 39.62 112.05 35 Burnham: Measures of Proper Motion Stars 80 Concn' (6. $...9. I) Bradley 1300 (6. 2. ..9. 7) R. A. 9-5- 13 Decl. + 18 32' R. A. 9" 8 m 12" Decl. + 35 8' 1908.862 252 ?02 133*33 1911.947 26i?97 152^64 .882 251.82 133.08 12.066 261.73 152.49 974 252.08 132.93 1912.00 261.85 152.56 1908.90 251.97 133-11 No other measures. The proper motion of Bradley 1300 is : For comparison we have: Auwers o"i62 in 290^2 1870.5 2Si3 133*7 A. G. Ber. Boss 0.149 in 283.2 1882.34 2SI-9S I34'62 in O2 1908. 90 25I-97 133-11 3n P There is evidently considerable error in the meridian posi- tions if the micrometer measures are substantially correct. The latter give for the apparent motion of 80 Cancri: 0:057 in 250^7 The proper motion of the large star is given: Auwers 0*076 in 264?o Boss 0.045 in 228.7 I have measured the third star from B. These stars are DM (18) 2137 and 2136, the latter 9. 6m. B and C DM (23) 2063 (7. 5... 9.0) R. A. 9" 8 m 15" Decl. + 23 53' A and C 1908.785 82?87 6o" 3 8 .882 82.40 60.23 974 82.63 60.49 1909.071 .112 .164 3I7-I7 317.07 148^6 147-79 148.47 1909.11 3I7-I4 148.21 Ji 1 81 Cancri (6. 5... 13. 3) R.A.9 b 5 m 43 < Decl. + 15 29' A and B 1907.845 ii8?os 35:30 8.022 8.102 119.10 117.97 35-26 35.67 1907.99 118.37 35-41 A and C (9.5) 1907.845 229?25 222*10 8.000 229.20 222.67 8.022 228.97 222.41 1908.88 82.63 60.37 The prior measures give: 1841.23 87?so 5i"i9 m 1881.26 83.95 56.58 in 1881.24 84.40 56.63 3n 1908.88 82.63 60.37 3n O2 02 Doul). From these positions we have for the proper motion of the large star : o?iS3 in 237?5 The value derived from meridian observations appears to be too large. Porter 0*204 in 224?8 A. G. Bcr. 0.194 in 223.9 It is not likely that the small star has any sensible movement. To be certain of this hereafter, I have connected a faint star: 1908.785 8.974 9.071 A and B (10.7) i69?93 170-75 170.83 1908.94 170.50 59"75 59-70 59.98 59-8i 1907.96 229.14 222.39 No other measures of B. C is DM (15) 2001. Of this have the following measures : 1855.25 23558 237*11 in O2 1870.28 233-68 232.58 in O2 1882.34 232.23 228.06 in O2 1907.96 229.14 222.39 3" P 40 Lyncit (3. 4... 8. 6) R. A. 9" 13 44' Decl. + 34 54' A and B 1908.060 3735 210735 .082 37.O9 .159 37.18 210.10 210.30 From which the proper motion of A is : 0*563 in 202?4 The meridian positions give: Auwers o"6o6 in 294?3 Hedrick 0.573 in 295.1 Boss 0.575 in 294.1 1908.10 37.21 210.25 B and C (=21342) 1908.060 32i?9 l6:'8s .082 321.0 16.86 .159 321.1 17.02 1908.10 321-3 16.91 Burnham: Measures of Proper Motion Stars have the following micrometer positions of AB : Therefore the proper motion of the large star in declination 1851.18 1861.27 1870.30 1881.29 1886.34 3373 34-57 34-97 35-65 36.05 204" i 5 205.32 205.92 207.62 208.05 in in in in an O2 O2 OS O2 Eng is: Measures Porter Auwers Boss 0.427 0.432 0.441 1908.10 37-21 210.25 3n P These positions give for the most probable motion of A: . 0*244 in 279?! The measures of BC given above when compared with Struve ..i 1830, show a slow relative motion which is undoubtedly real. As the smaller component of 2 1342 is only n m, it is safe to assume that the proper motion is in the other star. This motion is therefore: o"o25 in 24?o Applying this correction to the apparent motion of 40 Lyncis, ve have for the real proper motion of that star: 0^238 in 28s?o From meridian observations this has been given : Stumpe 0*250 Auwers 0.239 Newcomb 0.219 in 276?7 in 276.3 in 273.1 Boss 0.217 in 272.6 i|> Leonis (5.6. ..10.9) R. A. 9" 37 12' Decl. + 14 34' 1909.071 .112 .186 I3797 138.13 138.08 281^76 282.08 281.71 1909.12 138.06 281.85 1 single distances. The only other measure is the fol- lowing : 1880.17 139^63 28o"26 3n p" The distance between the two stars is too large for the most accurate measures with the micrometer. These observations imply a larger proper motion of the large star than that found by meridian positions. Auwers o"oi3 in 261^3 Newcomb 0.030 in 252.2 Boss 0.014 m I9I-7 20 Leonis Min (5.6. . .8.8) R. A. 9" 54 6* Decl. + 32 31' There is no comparison star near enough for direct measure- ment with the micrometer. Otto Struve compared it in R. A. and Decl. with DM (52) 1968, which is about 33' following. The several results are : 1852.19 A Decl. 3i'fg2 in O2 1873.27 23.96 in O2 1909.16 9.24 3n f3 Lalande 19627 (8.8. ..9.4) R. A.9 h 59 m 9' Decl. + 69 2' 1907.810 8.079 8.082 255.25 255-33 255.25 183.27 183.08 Eng 1907.99 255.28 183.20 The only other measures are : 1893.25 255^33 i86'/78 2n Giving for the motion of A : 0*243 in 257?9 As these stars differ but little in brightness, it is uncertain whether or not the motion is all in the larger. The results from meridian positions are discordant. Stumpe o"4ii in 2ig?5 Porter 0.303 in 237.0 To determine hereafter whether there is any motion in B, I have connected a third star : B and C (12.0) 1912.066 325^40 I98"o9 .162 325-50 198.16 .164 32S-I3 197.49 1912.13 325.34 A and B are DM (69) 558 and 557. 197.91 Groombridge 1618 (6. 7... 8. 8) R.A. lo"4 m o t Decl. + 50 4' 1908.025 I9i?58 172^41 .102 191-23 172.37 .118 191.38 172.09 The only measured positions are: 1894.37 io6?45 183^27 2n Eng 1908.08 191.40 172.29 3n p From these positions the proper motion of A is : i?393 in 248?g This motion is larger by the meridian observations : Groombridge i"45o in 249^2 Porter 1-447 m 249.8 Kustner 1-459 m 249.4 The smaller star is DM (50) 1724. Comparing this with (50) 1723, a star 9.3 m, seems to show that the former has no sensible motion, and that the motion of the large star, as given by the measures is correct, if there is no unusual error in the micrometer measures. 1724 and 1723 1908.12 254?o 33"6s m P I877-3 254.0 303.4 A. G. Harv. 37 Burnham: Measures of Proper Motion Stars Oxford (Z 26) 28107 (7.2) R. A. 10" 1 1 "' 19: 16 Decl. + 26 2 1 ' 59:6 This is the 7.5 m star, DM (26) 2065, with the photographic place for 1900. The Oxford proper motion is: 0^305 in 154?! There is no available comparison star for the micrometer. A and DM (26) 2662 1910.93 AR. A. 62:70 A Decl. 127711 A comparison of this with the A. G. positions of 1875 indi- cates a proper motion in A of 07243 in I5i?7. Groombridge 1636 (6. 5... 8. 8) R. A. 10" 1 1 33' Decl. + 44 39' 1908.025 103^75 151*07 057 103-75 150.84 .118 103.93 150.84 The micrometer positions are: 1893.30 IO5?oo I52?36 2n Eng 1008.07 103.81 150.92 3n p" B is DM (44) 1975. The measures give for the proper motion of the large star : 07234 in I9o?2 This is considerably smaller than the transit values, but if the measures are combined with the positions in A. G. Bonn for 1881, the proper motion would be still less. The prior values are : Stumpe 0^314 in I73?8 Groombridge 0.304 in 165.0 Porter 0.295 in 174.6 Paris 0.328 in 166.5 Boss 0.310 in 169.1 DM (20) 2465 and 2464 (9.0. ..9.4) R. A. 10" 13 6' Decl. + 20 28' 1007.845 8.022 8.025 333-03 333.05 99707 99.18 99.04 1907.96 332-99 99.10 The measures in this case, covering more than half a century, should give a very accurate value of the relative motion. 1856.77 32'32 ui7S2 2n O2 1869.82 323.80 108.01 2n O2 1879.78 326.25 105.53 2n O2 1893.23 329-39 101.50 2n Eng 1007.96 33-'. 99 99-10 3n P These positions give for the proper motion of A : 07488 in z67?s This is near y Leonis. The proper motion from meridian observations is : Stumpe 0^534 in 27o?3 Porlir 0.495 in 269.1 LaUnde 20155 (8. 5... 8. 7) R. A. io* 17 32' Decl. + 3 14' 1907.997 8.000 8.022 A and B 25! 18 24.70 24.63 100773 101.01 101.32 1908.01 24.84 IOI.02 A and C (10.3) 1907-997 H5?45 167777 8.000 145.25 167.13 8.022 145.35 167.70 1908.01 145-35 i67-53 B is DM (3) 2357. The motion of A is determined from the following transit and micrometer positions: 1842.3 24?2 827i2 Lament 1880.5 25.9 92.60 A. G. Alb. 1891.22 24.99 96.47 3n Eng 1908.01 24.84 101.02 3n (5 Therefore the apparent motion of L 20155 is : 07289 in 2O7?9 Some of the meridian values are: Stumpe 07278 in 2o8?6 Porter 0.200 in 211.1 Boss 0.283 in 212. o There are no other measures of the third star. Oxford (Z 26) 28528 (9.4) R. A. 10" 22 m 46:27 Decl. + 25 24' 37 1 This is the 8.8 m star, DM (25) 2255. The place from an astrographic plate taken 1908.25 is for 1000. From a compari- son with a prior photograph, the proper motion is given : 07136 in 28o?6 A and B (9.0.. .11.5) 1911.142 226?6o 207740 .164 226.50 206.72 .184 226.65 207.23 1911.16 226.58 207.12 DM (32") 2066 (6.5... 10.5} R. A. 10" 35 28' Decl. + 32 19' 1909.109 I736o H77i9 .170 173.48 116.97 .186 173-55 117.08 933 173-26 116.60 936 173.42 116.26 1909.47 173.46 116.82 The only other measure of this is the following: 1879.60 I72?o8 119711 2n Bl If the measures are correct, the principal star should have proper motion of 07078 in 144 The only value from meridian positions is : Boss 07030 in 180 Burnham: Measures of Proper Motion Stars Groombridge 1697 (6 o...9.o) That the large stars have the same proper motion will be R. A. io"45 m 16* Decl. + 70 30' apparent from the following positions : 1810 246^4 I34''2 Groombridge A and B 1893-36 247.27 134-95 2n Eng 1908.022 S2?oo I74"7 1895.29 247.2 135.06 Donner .025 52.12 175-15 1908.07 247.19 135-16 3" 3 .044. 52.00 175-27 I have therefore measured a third star. The proper motions .102 52.00 175-14 are given : 1008.05 52.03 175-06 A = 0^285 in 20t)?2 Groombridge B and 6 (12.8) 0.279 m 214.2 Porter 1908.022 223? 17 59"39 6 = 0.276 in 212.4 Groombridge O.2&1 in 212.4 Porter .102 222.90 59-83 1908.06 223.03 59.61 i other measures of the faint star. We have the following B for comparison : 1842 46^6 152^2 O. Arg. N. 1894.53 51-15 170-09 2n Eng 1908.05 52.03 175-06 4n P The direct measures give for the proper motion of A: o"4i8 in 259?o Or with the meridian position: o?4i6 in 263?5 The first is probably the best, notwithstanding the longer interval in the other. This, from meridian observations only, has been given : Stumpe o"455 in 255?2 Porter 0.428 in 259.4 Kustner 0.423 in 260.3 Groombridge 0.399 in 258.6 Boss 0.403 in 259.8 DM (1) 2495 (6. 9. ..12. 7) R. A. 10" 46" 4' Decl. + 1 43' Oxford (Z 26) 30038 (10.9) R. A. ii''ii m i3!4i Decl. + 27 o' 23':6 The place for 1900 is from a plate taken 1908.25, which, com- pared with an earlier exposure, gives a proper motion of: o"i20 in 3ii!8 There is no near star for direct comparison with the micrometer. A and DM (27) 2000 (8.3) 1911.14 AR. A. 73! 7 ADecl. 42"o P 1900 73.6 41.6 Ox. A. G. Anon (9. 7... 9. 7) R. A. n 11 22 m 18" Decl. + 8 19' The large proper motion of this faint star was detected by Dr. Max Wolf (A. N. 4101) by the change shown on photo- graphic plates made in 1892 and 1906. My early measures have been previously given (Mon. Not. LXVIII, 521) and compared with rough places obtained by measuring photographic paper 1912.255 27i?o8 39^53 prints. .274 271.40 39.27 The micrometrical measures are : .312 271.13 38.89 1912.28 271.20 39.23 A and B 1906.906 252?: 8 1 "63 In the first instance this was taken for 55 Leonis. I do not 7.006 252.0 81.68 find any proper motion assigned to the large star from meridian 7.102 252.1 81.42 positions. 7.120 252.2 81.44 1908.118 253.23 80.92 Groombridge 1745 and 1744 (7. 2... 8. 5) .156 159 253.10 253.08 81.11 80.68 R. A. 1 1" 5 m 9' Decl. + 43 29' .192 253.00 80.82 A and B 1909.071 253-87 80.13 1908.025 247^18 I35"2i .112 253-63 80.50 .057 247.08 135-32 .148 253-80 80.24 .118 247.30 134-96 .164 253.94 80.15 1908.07 247.19 135.16 I9IO.O9I 254.78 80.05 093 254-35 79-87 B and b (12.5) .107 254.51 79.84 1908. 159 336^38 I32:'64 266 335.92 132-29 1910.931 11.107 255.28 255.21 79-02 79.08 1908.21 336.15 132.46 11.164 255.50 / y ' "" 79.09 39 Burnhant: Measures of Proper Motion Stars The several mean results are as follows : 1892.23 242?! 91747 Wolf 1907.03 252.10 81.54 411 P 1908.15 253.10 80.88 411 P 1909.12 253.81 80.25 4n P 1910.10 254.55 79-92 3n P 1911.07 255.33 79.06 3n P The proper motion of A from all these measures is: 1 7228 in igo?4 Further measures will reduce the error in this value. To make it certain that B has no proper motion, I have con- nected it with a 12 m star : BandC 1906.906 275?9 155:17 7.102 275.5 I54-48 7.120 275.7 154.17 1908.118 275.90 154-90 .159 275-85 154-70 .192 275.67 154.50 It is obvious that B has no sensible proper motion : 1892.23 275?9 154794 Wolf 1907.04 275-7 I54-6I 3n P 1908.15 275.8 154-70 3n P 61 Urtae Maj ($.3. . .11.2) R. A. n h 34 44' Decl. + 34 53' 1907.271 loo?55 159*39 .331 100.58 159.17 Therefore the corrected proper motion of the large star is : Measures 07381 in 287^5 Auwers 0.359 in 274.3 Porter 0.365 in 273.6 Boss 0.347 in 271.8 P Virgin!* (4.O...IO.8) R. A. 1 1" 44 m 25' Decl. + 2 26' 1908.156 284^75 245760 .192 284.17 245.28 .214 284.3.} 245.80 1908.19 284.42 245.56 The following are the direct measures: 1850.31 283?40 200767 in O2 1855.25 283.45 205.19 in O2 1884.30 283.85 229.14 211 H2 1908.19 284.42 245.56 3n P The proper motion of P Virginis from these positions is : 07792 in io8?8 From meridian observations this is given : Auwers 0.765 in 109.9 Newcomb 0.789 in 110.4 Boss 0.792 in no. 6 O2 also compared P with a 9m star nf. The distance is too great for the micrometer, and I have therefore measured only the differences in declination. 1908 .20 A Decl. = 5 1 776 2n Comparing this with the four measures of O2 (1852-1884) gives substantially the same value for the proper motion in declination as that from the other star. From A B Decl. 07252 From AC 0.256 Lalande 22662 and 22667 R.A. ii*57 m 49' Decl. + 4 2' A and B (8. 8... 9.0) 1907.997 04?7o ui72i 8.000 94-42 in. ii 8.022 94-50 111.30 1907.30 100.56 159.28 We have the following measures : 1850.30 io8!i2 163733 in OS 1855.25 107.60 162.85 m O2 1884.29 103.57 160.91 sn H2 1907.30 100.56 159.28 2n P The correction to the proper motion is small : Measures 07384 in 184^0 Auwers 0.380 in 182.8 Boss 0.391 in 181.3 62 Urtae Maj (6.O. . .9.2) R. A. 1 1" 35 20' Decl. + 32 25' 1907.197 209?65 84729 .217 299-54 84-50 .258 299.53 84.33 1908.00 94-54 in. 21 Both stars are found in several star catalogues, and each has some proper motion. Unfortunately there is no other star near enough to either to be measured with the micrometer. The proper motions are : Lalande 22662 Porter 07145 in 2gs?2 Ktistner 0.125 >n 284.8 Paris 0.150 in 270.0 Lalande 22667 Porter o7so8 in 172^4 Kustner 0.544 in 174-2 Paris 0.539 in 173.1 1907.22 299.57 84.37 The small star is DM (32) 2178. The measures are as follows : 1850.30 297?20 105776 in O2 1852.27 297.17 105.07 in O2 1855-25 297.45 103-99 m O2 1884.27 208.52 93.38 2n H2 1888.33 208.90 91.59 2n Eng 1907.22 299.57 84.37 3n P Burnham: Measures of Proper Motion Stars The only direct measures are : 1891.27 8p?37 lo8'.'67 211 1908.00 94-54 in. 21 an Eng From these positions the apparent motion of B is : o''6ii in 167^6 10 Virginia (6. 2. ..13.5) R. A. 12" 3 m 32' Decl. + 2 34' 1909.342 10.244 10.337 ioi?88 100.80 100.57 39"oi 39.76 39-66 1909-97 101.08 39.48 No other measures of the small star. The proper motion of the other is given: Auwers o"i87 in I76?3 Porter 0.174 in 172.6 A. G. Alb. 0.182 in 174.8 Lalande 22954 (6.0... 12. 8) R. A. 12" 9 o' Decl. 9 37' 1909.340 -342 -378 149-05 I49.I5 89.44 89-56 149.02 89-43 1909-35 No other measures. The proper motion of the large star from meridian positions is : Porter 0^980 in I77?2 Paris 1.007 in 180.0 8 Ursae Maj (3.5.. .IO.2) R. A. 12" 9 30' Decl. + 57 42' A and B 1907.197 .217 .258 73?30 73.30 73-30 I9o"o6 190.06 190.30 1907.22 73-30 190.14 A and C (11.7) 1907.217 .258 I24?6o 124.80 186.19 1907.23 124.70 186.37 For AB we have the following measures : 1878.20 73? 18 I92?37 3n 1886.46 73-33 192.02 2n 1894.50 73.17 191-49 2n 1907.22 73.30 190.14 3n Ball Eng Eng These positions give for the most probable proper motion of 6 Ursae: o'.'o8o in 68?6 The only prior measure of the third and fainter star is : 1879.30 124?! i88'.'59 in p This gives nearly the same proper motion as the other star, but as it depends on a single night, the other result is to be preferred. From meridian observations the proper motion is : Auwers o"io3 in 86? I Newcomb 0.121 in 87.5 Boss o. no in 88.4 18 Virgin!* (5.0... 11.5) R. A. I2 h 14" 15' Decl. + 3 59' 1909.266 .302 .304 2^78 2.69 2.49 I3o"34 130.39 130.23 1909.29 2.65 130.32 No other measures. The proper motion is given : A. G. Alb. o"322 in 2s8?4 Porter 0.315 in 257.2 Auwers 0.325 in 258.8 Boss (G. C.) 0.307 in 252.3 SD (12) 3614 (5.0... 13. i) R. A. 12" 14 44' Decl. 12 54' 1909.304 342 378 3I277 312.92 313-21 48.86 48.43 1909.34 312.97 48.59 From meridian observations this star has no sensible proper motion : Boss o"(X>2 in 3238 7 Can. Ven. (6. 5... 10.7) R. A. 12" 24 22" Decl. + 52 12' A and B 1908.249 .266 370 171.83 172.23 io8"79 109.23 109.51 1908.29 172.04 109.18 A and C (8.7) I908.230 326?00 232''2I .249 326.65 231.58 .266 326.22 231.55 1908.25 326.29 231.78 There are no other direct measures of these stars. C is DM (52) 1630 (= Groombridge 1896). Taking the relative posi- tions as given from meridian observations in Groombridge, O. Arg. N., A. G. Harvard, and Greenwich lo-year catalogues, with the present measures, we have for the proper motion of the large star : 0^304 in 273?8 Burnham: Measures of Proper Motion Stars Some of the prior determinations are : Auwers 07230 in 271^5 A. G. Harv. 0.253 in 282.5 Porter 0.288 in 273.6 Boss 0.275 in 273.1 If C has any proper motion at all, it is small and uncertain. A. G. Harv. Greenwich o7o37 m 0.033 in 7O.6 X Virgin!* (5.0... 9.0) R. A. I2" 32 3' Decl. 7 28' A and B 1907.258 I3778 172745 .271 137-48 172.85 331 137-40 172.89 1907.29 1907.258 .271 .331 137-55 AandC (10.3) no?o8 110.58 110.57 172.73 221.49 220.84 221.77 1886.39 I3770 172786 211 Eng 1894.26 137-77 173-03 211 Eng 1907.29 137-55 172-73 3n P 1886.39 110.72 221. 2O 2n Eng 1894.27 110.92 220.90 2n Eng 1907.29 110.41 221.37 3" P 1907.29 110.41 221.37 The prior measures are : AB AC It is evident from these positions that there is no certain relative motion in twenty years. It is remarkable that two small stars, so far removed, should have exactly the same proper motion, which seems to be the case if the measures are correct. The motion of A, given by the meridian observations, is too large not to appear in measures given above. Auwers o?ios in 2s8?4 Newcomb 0.089 in 249.9 Boss 0.084 in 244.0 The measures of the comparison stars should be continued, and other stars connected with both if possible. Engelhardt measures a third star (Lalande 23627) from A, but the distance is too large for the lowest micrometer eye- piece. AD 1886.39 330? 10 321 7o8 2n Eng A comparison of this with Lalande indicates a much smaller proper motion for x Virginis. 33 Virgin!, (5. 8... 8. 8) R. A. 12" 40- 16' Decl. + 10 13' B is DM (10) 2467. The measures are: 1852.62 i83?25 192'' 59 3n OS 1884.33 187.28 180.14 311 H2 1887.31 187.52 178.94 2n Eng 1907.32 190.91 171-87 3" P It is possible, though not very probable, that a star of the magnitude of B has some proper motion. It is more likely to appear hereafter that the motion of A from transit positions is too small. Measures 07576 in 138^0 Auwers 0.518 in 149.0 Porter 0.511 in 149.2 Boss 0.531 in 149.2 Piazzi XII. 179 (6.8 .--9-5) R. A. 12" 40 m 39' Decl. + 24 48' 1908.079 .102 .118 .192 12. 12. 12. 55 48 50 I597io 158-83 159-19 158.80 Ji>)S.i_> 12. 49 158.98 For comparison we have : 1894.28 12?67 1908.12 12.49 an 158.98 Eng These measures give for the proper motion of A: Measures 07234 in 212^9 Stumpe 0.256 in 207.1 Porter 0.238 in 210.6 34 Virgin!* (6. 2... 9. 4) R. A. 12" 41'" it" Decl. + 12 37' 1907.271 331 348 ioo!6s 190.60 191.47 171778 I7L93 171-89 1907-32 190.91 171.87 1909.340 .342 359 4?20 3-95 4-57 138.80 138.76 1909.35 4.24 138.73 No other measures of the small star. The proper motion of 34 yirginis is given from meridian observations : Auwers 07042 in n6?6 Boss 0.054 in 119.0 Piazzi XII. 188 (7.O...IO.O) R. A. 12" 42 49' Decl. + 12 45' A and B 1908.102 356?53 156745 .118 .156 356.55 356.92 156.58 157.31 1908.12 156.78 B and C (9.4) 1908.102 328?53 135776 .118 328.20 135.55 .156 328.62 135-85 1908. 12 328.45 135.72 Burnham: Measures of Proper Motion Stars The measures of AB are : 1893.25 357^8 I55"23 2n Eng 1908.12 356.67 156.78 3" f> The proper motion of A from these positions is: o'.'ioB in ii8?9 This is less than that given by transit positions : Stumpe o"28s in ns?S Porter 0.265 in 118.6 For BC we have: 1893.25 328?47 I36"68 in Eng 1908.12 328.45 I35-72 3n P As the first position depends upon a single night, it would not be safe to assume any change in the distance. If that were real, it would make the proper motion of A still smaller. Lalande 23917 (8. 2... 9.2) R. A. 12' 43 m 38' Decl. + i 52' 1908.118 .156 .192 321 ?7S 321.89 321.68 141.10 140-83 140.89 1908.16 321.77 140.94 2n 3" For the relative motion we have : 1893-36 3i8?45 I34''43 1908.16 321.77 140.94 Therefore the proper motion of A is : o"6gs in ioo?g The meridian observations give: Boss o'.'7OO in l83?7 Porter 0.676 in 185.2 Paris 0.688 in 180.0 The small star is DM (2) 2584. 8 Virginia (3. 6... 10. 5) R. A. 12" 49 m 34' Decl. + 4 3' Eng P 1907.997 8.022 8.039 138.43 138.23 i 59^62 159-62 159-40 1908.02 138.34 The only other measures are: 1879.30 I42?35 I52"o3 1901.29 139.60 158.07 159-55 2n 3n The proper motion of the large star is therefore: Measures 0*453 m 267?o Auwers 0.493 m 264.2 Newcomb 0.480 in 262.8 Boss 0.479 m 262.3 8 Virginis is given in the General Catalogue of Double Stars as No. 6308. t Virgin!* (3.0... 11.9) R. A. 12" 56"- 13' Decl. + 1 1 36' 1909.071 H957 248%). .112 119.80 249.19 .148 119-83 248.35 For the proper motion of the large star we have : 1879.30 I2O?45 24o"89 2n 1909.11 H9-73 248.73 3n The annual movement of e Virginis is therefore: Measures 0^283 in 279?2 This has been given from meridian observations: Newcomb 0^274 in 273?! Auwers 0.294 in 276.2 Boss 0.273 in 273.6 Oxford (Z 26) 33127 (10.1) R. A. I3 h 2 m 45!3i Decl. + 27 o' s8"2 This place for 1900 is from a plate taken 1908.25. Compar- ing this with a prior exposure gives the small star a consider- able proper motion : o"i4i in 2io?8 It is closely sf a 7.5 m star : DM (27) 2217 and A (10.5) 1911.107 144^25 i86"26 .142 143.83 186.07 .164 144.30 185.37 1911.14 43 Comae R. A. 13" 6 16' 144.13 185.90 (5.0... 10. 8) Decl. + 28 29' 1907.271 329 331 250.53 250.53 91:02 90.74 90.73 1907.31 250.57 90.83 The measures cover a period of more than half a century, and should give the proper motion with the highest degree of accuracy. 1851.34 278?oS I3i"io 3n 1855.32 277.60 127.48 in 1884.35 264.80 104.95 3" 1907.31 250.57 90.83 3n The proper motion of the large star is : Measures i"io6 in 3ig?3 Auwers 1.201 in 317.8 Boss 1.184 ' n 3!7-7 OS O2 H2 Oxford (Z 26) 33210 (7.8) R. A. 13" 14'" 6?37 Decl. + 25 8' 9':6 The place for 1900 is from the Oxford astrographic plates. From a comparison of the photographic positions the proper motion is given: 0^292 in 298^9 43 Burnham: Measures of Proper Motion Stars This star is DM (25) 2619 (8.0). A comparison of the Oxford and A. G. Camb. places confirms the motion, giving approximately o?i9 in 290. The only available star for comparison is extremely faint. A and B (8.0... 15. 5) 1911.219 i;s?7o 144*79 a Virgin!* (l.o. . .12.2) R. A. 13* i8 m 54' Decl. 10 32' 1909.071 .148 .164 32?8o 32.40 32.47 147*84 147-50 148.23 1909.13 32.42 147.86 The only earlier position is from a single night, and therefore any deduced proper motion at this time would be of uncertain value. Future measures will remedy this. 1879.25 32?9 144*42 in fj* The proper motion of o Virginis from meridian observations is: Auwers 0*067 in 2 5i7 Newcomb 0.053 in 232.3 Boss 0.055 in 228.9 70 Virgin!* (5. 2... 8.8) R. A. 13* 22 34' Decl. + 14 25' 1909.170 .186 .206 137.80 137-49 287"95 287.44 287.44 1909.19 137.70 287.61 On account of the great distance for the micrometer, all the measures are subject to more than the usual error, but as the time interval is more than half a century, the proper motion should be substantially correct. The comparison star is DM (14) 2622. 1852.27 144^03 304^54 in OS 1884.32 140.53 294.73 2n HS 1909.19 I37.70 287.61 3n P From these positions the proper motion of 70 Virginis is : 0*647 in 203 ?4 This has been given from meridian positions: Auwers 0^624 in 2O4?7 Paris 0.626 in 205.0 Porter 0.623 in 204.5 Boss 0.634 in 202.5 Piazzi XIII. 163 (6.7...IO.O) R.A.13'35-7' Decl. + 28 40' 1907.997 8.000 8.039 1908.01 22 7 ?28 227.42 27-45 227.38 91712 91-33 91.41 91.29 I do not find any proper motion from meridian positions. This is near the cluster, Messier 3. The only other measure is : 1879.25 228^15 91*58 2n p" The two positions imply a proper motion in A of 0*042 in DM (18) 2776 (9. 2. ..10.6) R. A. 13" 39 14' Decl. + 18 27' A and B 1911.260 i8i?37 88*78 334 337 181.70 181.25 88.83 88-35 1911.31 181.44 88.65 This small star has an extraordinary proper motion : A. G. Berlin 1*889 in i68?3 No other direct measures. From measures by Slocum of a plate made with the 4O-inch refractor we have: 1910.10 i8i?i9 oofog A and DM (18) 2777 (9.0) 1875 A Decl. 395*0 A. G. Ber. 1907-45 33L25 Photo 1910.10 321.65 Photo I9".33 319-94 P Oxford (Z 26) 34103 (10.3) R. A. 13" 39 44?oi Decl. + 26" 5' 36? I This place for 1900 is from an Oxford plate made 1008.34. It is identical with the 9.5 m star, DM (26) 2489. From a comparison with an earlier plate of the Astrographic Catalogue, the proper motion is deduced : 0*186 in 28s?6 A and B (9.5... 13) 191 i . 164 i6a?57 87?oo .184 162.67 88.03 .219 162.38 87.23 1911.19 162.54 87.42 The comparison star is much too faint to appear on the pho- tographic plate Oxford (Z 26) 34238 (9.3) R. A. 13* 52 25^0 Decl. + 25 24' 37*0 The place (1900) is from an Oxford astrographic plate made 1908.34, and the proper motion from this and an earlier plate is given : 0*164 in i67"6 This star is identical with the 9.1 m star, DM (25) 2706. A and B (9.3.. .12.9) 1911.142 27?40 113*93 .219 1911.18 27-58 27.49 113-84 Burnham: Measures of Proper Motion Stars - Oxford (Z 26) 34278 (10.9) R. A. 13" S4 m 49^12 Decl. + 25 43' 40^2 The place for 1900 is from an Oxford astrographic plate taken 1908.34; and this compared with a prior photograph of the same region indicates a remarkable proper motion for a star of this magnitude : A and B (10.7) 1910.280 58^65 161^18 .282 58.27 160.80 .299 58.82 160.81 1910.29 58.58 160.93 A and DM (25) 2715 (9.3) 1910.260 93?52 258"94 .280 93.72 258.48 1910.27 93.62 258.71 A comparison of the Oxford and A. G. positions indicates considerable proper motion in one or both stars. Prof. H. C. Plummer gives the positions of the two com- parison stars from the last plate : 1908.34 s8?5 i6o?4i 1908.34 93.7 256.89 Oxford (Z 26) 34290 (10.0) R. A. 13" 55'" I 9 ?95 Decl. + 25 48' 44^9 This star is DM (26) 2513 (9.5). The place give here is for 1900 from an Oxford plate taken 1908.34. Compared with a prior plate, the proper motion appears to be : o"i49 in I22?5 There is no good comparison star for the micrometer. A and DM (26) 2517 (8.9) 1910.28 A R. A. + 76! 2 A Decl. + log^S P I8 7S 76.1 105.3 A. G. Camb. Lalande 26147 (7.0... II. 5) R. A. 14" 1 1 39' Decl. 6 59' 1007.258 8.192 8.403 8^78 7.80 8.45 44.07 44-36 I907-9S 8-34 43.96 Observed at first by mistake for Ho 384. No other measures. The complete measures are : 1887.48 2i6?67 154^43 2n 1894.44 217.03 154.92 2n 1907.30 217.16 155 .75 3n Eng Eng From a mean of the first two, and the last, the proper motion of the large star is : Measures 0^084 in 75?7 Auwcrs 0.114 in 95 - Boss 0.114 in 109.4 6 Boot is (4.4...ll.o) R. A. 14* 2i m 7' Decl. + 52 24' 1907.140 .197 .214 182.0 182.1 6g".o7 69.14 69.04 1907.18 182.2 69.08 1910.337 340 .356 181.5 181.5 181.8 69"34 69.11 69.26 1910.34 181.6 69.24 The only other measures are given in the Pulkowa Observa- tions Vol. X as follows : 1854.64 1877.00 1883.47 i8i?9 181.9 182.2 09^08 98.61 99.16 in 2n an O2 O2 H2 Evidently there is no relative motion; and apparently each of the distances is 30" too large. It is not a printer's error, as the distance of 99" is twice referred to in the introduction to Vol. X. The proper motion of the system is : Auwers 0*468 in 2ii?6 Newcomb 0.468 in 210.2 Boss 0.471 in 210.4 There is no third star within reach of the micrometer. SD (7)3856 (9.0... 9. 6) R.A. if 24" 35* Dec!. 8 6' 1007.137 .197 I5I.5 iSi-3 5o.i3 49-95 1907.16 151-4 50.04 I do not find that any proper motion has been assigned to the 4125). No other measures, principal star. The larger star is said to have some proper motion (A. N. 18 Boot i* (5. 6. ..10.5) R. A. 14" 13 27" Decl. + 13 34' 1907.271 .312 329 1907.30 217.08 217.15 217.16 I55"82 155.87 I55.56 155-75 a Booti* (4.7...io.o) R. A. 14" 29 27' Decl. + 30 16' A and B 1907.197 82?s 237^18 233 1907.21 82.4 82.45 237-06 237.12 45 Burnham: Measures of Proper Motion Stars A and C(n.s) I907-I97 972 237" 12 233 97-2 236.85 22 Librae (6.5.. .13.1) R. A. is'o 1 "?' Decl. i6i' 1909.378 275?5 10799 .381 275.1 11.27 .458 274-5 ".07 1907.21 97.2 236.98 B and C 1907.197 i8o?8 5978o .214 180.2 60.31 .233 180.5 60.37 1909.41 275.0 11. ii This star has a faint companion not heretofore seen. There is another 13 m star, 234^4 : 35"7- The proper motion of 22 Librae is : Auwers o7ii3 in 264^0 Boss 0.069 m 249.7 43 Bootis (s.2...ll.o) R. A. 15" 2 2' Decl. + 25 20' A and B 1907.329 53?i5 107728 331 52-65 107-15 351 53-i8 107.19 1907.21 180.5 60. 16 We have the following measures of AB : 1852.40 8i?53 248*00 2n OS 1870.46 81.82 244.71 in O2 1881.30 81.92 244.00 in O2 1907.21 82.45 237.12 2n P These positions give for the apparent movement of A : o"2o8 in 62?3 The measures of BC are : 1853-42 i8i?i5 57"6s m O2 1870.46 180.38 58.53 in O2 1881.30 181.17 59.15 m O2 1007.21 180.50 60. 16 3n P One of these stars has a small proper motion: 07052 in 348?6 (180) Assuming that this is in B, and applying the correction to the observed movement of A, we have for the real proper motion of that star : Measures 0^228 in 49?7 Auwers 0.225 in 53.8 Newcomb 0.231 in 57.5 Boss 0.227 in 58.2 P Una* Afin (2. 3. ..II. 5) R. A. 14" 51" 6' Decl. + 7439' 1908.060 342?25 209^10 .159 342.25 209.14 .266 34i-o8 209.19 1007-34 52.99 107.21 A and C (9.5) 1907.329 44?33 246751 .331 44.32 246.39 .351 44.32 246.60 1907.34 44.32 246.50 B and C 1007.351 3728 I4i768 C is DM (25) 2874, and is known to have a large proper motion, given by Porter : o?933 >n 301 ?o The measures of AB are : 1888.53 ss?32 io87ig 4n Eng 1907.34 52.99 107.21 3n P From these measures the proper motion of 45 Bootis is : Measures 07239 in I3i?5 Auwers 0.248 in 140.5 Newcomb 0.261 in 135.1 Boss 0.262 in 134.3 The measured positions of AC are: 1887.49 4977 252729 in Eng 1889.56 49-27 251.46 3n Eng 1907.34 44.27 246.50 3n P Rejecting the single observation, the apparent motion of Cis: 17255 in 303^9 Correcting this for the proper motion of A as shown by the measures of AB, we have for the real proper motion of C : l7oi8 in 302! I i-ioS.li> 342.16 209.14 The only other measure is: 1879.30 342 ?8 207782 in p* As the first position depends upon a single night, the result- ing motion cannot be considered as very certain. A continua- tion of the measures after a proper interval of time will give a reliable result. From the two positions we have : 07092 in 282^2 The values from meridian observations are discordant and doubtful. Auwers 07034 in 266?6 Groombridge 0.018 in 279.3 Newcomb 0.004 '" 3 1 7-* Boss 0.030 in 279.6 Burnham: Measures of Proper Motion Stars SD (15) 4042 (9.0... 9. 3) R. A. I5 h 3 m 38" Decl. 15 50' A and SD (15) 4040 1907.258 3S4?8o 114".! 5 425 355-00 114.42 444 355-00 114.88 1910.414 356-57 125-35 436 357-27 125.09 452 356.78 125.32 -455 357-00 125.33 A and a (11.3) 1907.258 178? i 5 40*42 .425 178-83 40.02 444 178.37 39-66 1910.414 172.33 29.42 452 171.58 29.76 455 171.11 29.75 No other measures of the small star. The mean results are : 1907.37 I78?45 40':oi 3n fj 1910.44 171.67 29.64 3n (J a and SD (15) 4041 1907.258 l8l?35 26o?27 single dist. The following are the measures of AB : 1892.40 338^20 66!'22 I3n Lv 1894.44 341-02 72.40 2n Eng I907.37 354-93 114-48 3n 1910.44 356-90 125.36 4n p From these positions the proper motion of A is : 3'.'669 in I95?9 This is given from meridian observations : Porter 3"66s in 195.0 Bauschinger 3.707 in 195.4 SD (15) 4041 has exactly the same proper motion. Com- paring the above with O. Arg. S. and Cin 13 shows no sensible relative motion. This is given from meridian observations: Porter 3^719 in 195^5 Bauschinger 3.730 in 195.2 Coronas (5. 7... 9. 6) R. A. 15" i5 m " Decl. + 30 3' l Draconis (3. 5. ..9. 2) R. A. 15" 22 16" Decl. + 59 23' 1909.112 .148 .164 4990 49-77 49-75 254"76 254-67 254-52 1909.14 49.81 254-65 The smaller star is DM (59) 1655. The only other measure is: 1879.26 so?o 254*67 in p 3 It is obvious that the large star has no proper motion which can be separated from the errors of the observer in any form of measurement. This is shown by the contradictory results found from meridian observations for the proper motion of i Draconis: Newcomb Auwers Groombridge Gr. lo-year Boss 0:014 0.015 0.015 0.027 0.016 48?2 336.4 2-9 325-2 333-0 Both stars are given in A. G. Hels. from which we have : 1875 so?o 254^6 43 Librae (5.0. ..10.5) R. A. 15" 35 2' Decl. 19 if 1909.378 .381 458 279?6o 279-55 279-45 I7i"37 170.91 171.44 1909.071 .112 .148 337-45 337.60 337-33 146^55 146.74 146.82 I909.II 337.46 146.70 The earlier measures of this star are: 1887.50 33673 I47"67 1894.56 336.77 147.89 2tl 2n Eng Eng A mean of these positions compared with the present rela- tion indicates a smaller proper motion for the principal star than that previously given, the movement in declination being reversed. Measures o"ii8 in 275?6 Auwers 0.147 in 250.5 Boss 0.138 in 245.1 1909.40 279.53 171-24 The small star is SD (19) 4187 (9.3). The other measures are: 1886.38 278^75 172*51 2n Eng 1894.49 278.42 172.40 in Eng Rejecting the single observation, we have for the proper motion of 43 Librae: o"n6 in 2i7?6 From meridian observations this motion has been given : Auwers o"ii7 in 2i4?o Newcomb 0.117 in 205.1 Boss 0.127 in 200. 8 i|> Serpent!* (6.2. . .9. i) R. A. 15" 38 ra o" Decl. + 2 56' A and B 1908.156 207?98 2o8"o8 .192 .249 207.65 208.13 208.29 207.64 1908.20 207.92 208.00 1908.156 .192 .249 B and C (7.4) 235S5 235-30 235-45 I7i"92 171.78 171.63 1908.20 235-43 171.78 47 Burnham: Measures of Proper Motion Stars A and a (10.8) V Serpent!* (4.0... 10.6) 1908 .266 280^38 i7i"53 R. A. ii" 50 55" Decl + 16 3' .288 280.57 172.07 .291 280.68 171.42 A and B 1908 .28 280.54 171.67 1008.041 315 02 201". 01 , 156 SiS- 05 2OI. 92 The only earlier direct measures of Ao are: 192 SiS- 30 201. 65 1007.43 1894.49 279-73 280.03 172.00 172.27 2n Eng 2n Eng 1908. 13 315- 12 2OI. 53 1908.28 280.54 171.67 3n P B and C (II. 0) A mean of the first two compared with the last gives the 1008. 041 165 38 177' 05 proper motion of the large star: 156 165. 42 177. 14 0^116 in 2OA.n 24i?9 The meridian values are nearly the same : Auwers 0:775 in 241 ?7 Porter 0.750 in 239.6 Newcomb 0.737 in 238.2 Boss 0.749 in 237 7 8 Ophiuchi (2. 6. ..13.0) R. A. i6"8 m 6 i Decl. 3 23' 1908.192 -249 252 294.83 294-50 65"54 65.26 65.68 1008.23 294-45 65.49 Burnham: Measures of Proper Motion Stars The only other measure is : 1879.38 291 ?6 in As the comparison star is very faint, and the first position from a single night, no great weight can be given to this proper motion : Measures o"i2o in i88?i Auwers 0.155 in 205.7 Newcomb 0.152 in 198.2 Boss 0.161 in 197.9 18 Scorpii (5.6.. .13-3) R. A. 16*9 6" Decl. 8 3' 1910.225 .260 395 2i6?4 215.9 216.8 23.40 23.64 23.61 1910.29 216.4 23.55 No other observations of the small star. The proper motion of 18 Scorpii is given : Auwers o"54O in 162?! Boss 0.564 in 156.2 15 Herculis (7.5.. R. A. 16" io m 35" Decl. A and B 1907.197 257^70 .217 .258 258.00 257.90 . 9. 8) + 11 43' 64?89 64.92 64.97 1907.22 257.87 B and C (n.o) 1907.258 I7?8o .293 17.80 64.93 107.80 1907.28 17.80 107.92 No other measures of C. For AB we have : 1887.53 259?23 66? 16 2n 1894.54 259.37 65.79 2n 1907-22 257.87 64.93 3n im which the proper motion is : Measures o"iO4 in 3io?6 Auwers 0.113 in 294.1 Boss 0.058 in 300.0 Lalande 29917 (8.6...IO.6) R. A. 16" 16 30' Decl. + 67 32' Eng Eng 1908.118 .156 .192 I358 I3-50 13.18 63.52 63-39 1908.16 13.42 63.44 It will be seen from the measures, that whatever the proper otion of the larger star is, it is sensibly the same for the other. 1893.67 I335 64:'oo 2n Eng 1908.16 13.42 63.44 3n 6 The proper motion of A is given in the star catalogues : Stumpe o"482 in 283?4 Porter 0.498 in 281.9 Schroeter 0.519 in 279.7 There is no third star near enough for the micrometer. | Coronae (5.0. ..12. 4) R. A. 16* 17" 25' Decl. + 31 10' 1909.340 342 378 59-52 59-45 59-45 185" 19 185.05 185.03 1909.35 59-47 185.09 No other measures of the small star. The proper motion of Coronae is given: Auwers o"i38 in 326?3 Boss 0.132 in 314.1 Newcomb 0.121 in 326.6 Lalande 29836 (8.3. ..II. 3) R. A. 16" 17 36' Decl. 13 21' 1909-381 458 .496 28l ?20 280.78 28l .03 103-43 IO2.82 102.65 1909.44 281.00 102.97 No other measures. The proper motion of the large star is given : Porter o"333 in 224?6 Paris 0.314 in 220.8 Anonymous (10.7. .13.3) R. A. 16" 20 m 35' Decl. + 48 38' A and B 1911.260 283?4O 70*41 337 375 283.38 283.78 70.64 70.94 1911.32 283.52 70.66 This small star is given a large proper motion by Kapteyn : i"23i in ,in?2 No other micrometer position in verification of this motion. The nearest A. G. star is sf: A and DM (48) 2399 (8.9) 1911.29 AR. A. + 1 13^16 A Decl. io6"8s * (J Herculii (3.0. . .IO-3) R.A. I6 h 2 5 ra 4' Decl. + 21 45' 1909.112 ,148 .164 274.40 274-50 255"6S 255-29 255-01 1909.14 274-50 255-32 49 Buniham: Measures of Proper Motion Stars The first measures are too discordant in distance to be used for proper motion : 1879.30 274?3 256715 in P' 1879.34 274-3 257-74 m P Comparing the last, which seems to be entitled to the largest weight, with the recent position, we have for the proper motion of P Herculis: Measures oTo86 in 254?o Auwers o.no in 266.4 Newcomb 0.109 in 256.9 Boss 0.107 in 257.1 12 Ophiuchi (6.0... 13. 7) R. A. 16" 3o m 3" Decl. 2 4' The proper motion from meridian positions appears to be too large unless the smaller star has some motion of its own. For determining this hereafter, I have connected a very faint star with C. B and C (12. 5) 1909.227 173? 18 76"07 .304 172.80 75.96 .378 172.83 75.51 1909.30 172.94 75.85 1909-381 10.414 10.436 244?8o 245.67 245.20 ioo734 IO0.42 ioo.04 1910.08 245.22 100.27 No other measures. The proper motion of 12 Ophiuchi is given in the catalogues : Auwers 07400 in 129?! A comparison of a mean of the two positions by Engelhardt with the present measures of AB gives for the proper motion of the principal star : o7oso in 292 ?6 The proper motion of the principal star is given from the star catalogues : Auwers 07167 in 291 ?o A. G. Alb. 0.128 in 290.1 Porter 0.081 in 280.7 45 Herculi* (5. 3. ..10.5) R. A. 16" 41 52' Decl. + 5 28' Porter 0.527 in 128.0 Paris 0.539 'n 128.3 Boss 0.546 in 125.6 SD(2)4230 (7.0. ..12.5) R. A. 16' 34 52" Decl. 2 37' 1009.378 62?i8 91750 .381 61.45 91-84 .400 61.64 91.36 I9H-395 83?98 .411 83.87 .414 83.90 122767 122.59 122.85 1911.41 83.92 122.70 No other measures. The proper motion is apparently small. Auwers o7o75 in 234?3 Boss 0.051 in 208.0 DM (4) 3265 (8. 3... 8. 3) R. A. 16" 44 m 7" Decl. + 4 56' I9II-395 3538o 52744 .411 353-66 52.53 .414 353-20 52.36 1909.39 61.76 91.57 No other measures. The proper motion of the principal star is given from meridian observations : Porter 07432 in i88?6 Paris 0.481 in 180.0 i9-4i 353-55 52.44 Bradley 2134 (7-5...9-O) R.A. i6"4o"Si" Decl. + 2 28' A and B 1909.227 2i9?04 150*10 B is DM (4) 3264 (9.0). No other measures. From me- ridian positions : 1879 352?9 5273 A. G. Alb. 30 Ophiuchi (5.0... p. 8) -304 219.38 150.33 f\. 1U 5<^ w i H m 378 219.52 150.02 1907 .258 69^65 92774 1909.30 219.31 150.15 .331 69.03 92.63 .351 68.92 92.69 These stars are DM (2" lowing from meridian and ) 3174 and 3173. We micrometer positions : have the fol- 1907 -31 69.20 92.69 1880.8 220?0 1487 1 A. G. Alb. The prior measures are : 1887.51 219.67 150.48 2n Eng 1887 Si 69^80 9' 782 zn Eng 1894-51 219.62 150.35 211 Eng 0M 48 69-63 92 -52 211 Eng 1894.5 2I9.I 149.8 Porter 1007 3i 69.20 92 .69 3n P 50 Burnham: Measures of Proper Motion Stars These measures are not consistent, and therefore any derived proper motion, must be considered as more or less uncertain. A mean of the first two, compared with the last, gives for the large star: Measures o7o6o in 191 ?3 Auwers 0.104 in 227.1 Newcomb 0.080 in 199.3 Boss 0.103 in 211.5 34 Ophiuchi (6.2. . .10.3) R. A. 16" s8 m 27" Decl. + 13 44' A and B 1909.148 267?so 151^52 .151 267.63 iSi-75 .167 267.77 iSi-59 1909.15 267.63 151-62 B and C (10.5) 1909.167 209? 57 98764 .227 209.28 98.38 .304 209.27 98.50 1909.23 209.37 PS-Si No other measures of C. Of the other we have: 1887.52 266?55 I5i"44 2n Eng 1894.69 267.03 152.11 an Eng From these positions the proper motion of the large star is: o"i24 in 178^7 The first values from meridian observations differ in direc- tion, and show a reverse motion in R. A. Auwers o7i34 in 185^6 Porter 0.134 in 199.4 Boss 0.135 in 173-8 The principal star is the following and smaller member of the wide pair, 2 33, App. I. DM (42) 2810 (9. 4... 9. 2) R. A. 17" 9 22' Decl. + 42 29' A and B 1912.236 279?32 209^96 .255 .274 .296 279-42 279.07 279-23 209.33 209.13 209.07 1912.26 279.26 209.37 From a comparison of photographic plates, this small star is given an unusually large proper motion (Bui. Acad. Sci., St. Petersburg, Feb. 1912) : ifin in 250?s No careful meridian position of both stars found. approximate DM places give: 1855 275 255" The B is DM (42) 2808. Measures after a short interval will show whether this large motion is real. Lalande 31478 (7. 8... 9. 8) R. A. 17" 13 30 s Decl. 7 53' 1908.252 222?80 102773 .266 223.23 102.88 .288 223.25 103.01 331 222.87 103.05 1908.28 223.04 102.92 The only earlier measure is : 1893.61 222?6o 105748 2n 1908.28 223.04 102.92 4n These positions give for the proper motion of A: Measures 07183 in 2os?4 Porter 0.203 in 183.8 Paris 0.196 in 180.0 DM (52) 2058 (8.o...n.i) R. A. 17" 24 21' Decl. + 51 59' Eng 1910.148 .164 .184 105-55 105.87 105.84 123.22 123.56 123.65 1910.16 105.75 123.48 The only other measures show no change. 1879.98 ios?93 123700 2n DM (18) 3424 (9.0... 10.3) R. A. 17" 33 32 s Decl. + 18 38' Bl 1912.274 .351 264750 264.73 264.61 267777 267.94 267.85 1912.31 This star is supposed to have a large proper motion : A. G. Berlin 17255 in 314^5 For comparison the nearest available star is measured. The nearest DM star is the following: A and DM (18) 3423 (9.0) 1875 AR. A. 25:7 A Decl. 2272 A. G. Ber. 1912.27 24.9 4.0 P These positions imply a proper motion principally in declina- tion. DM (68) 946 (9. 1... 7. 9) R.A. I7"37 m 8 s Decl. + 68 27' 1907.293 .312 329 61.78 62.23 67791 67.30 67.73 1907.31 62.13 67.64 In this instance the proper motion is in the smaller star. B is DM (68) 947. For comparison we have: 1877.7 997 49"64 A. G. Chris. 1892.76 77.68 55.93 2n Eng 1907.31 62.13 67.64 3n Buriiham: Measures of Proper Motion Stars The micrometer measures give for the proper motion of A: 17397 in 194-7 Or combined with A. G. : 1*399 'n I9S2 From meridian observations : A. G. 1*270 in 197?! Porter 1.296 in 196.8 Schroeter 1.350 in 196.7 The catalogues find no proper motion in B. 83 Herculi* (5.8. ..9.4) R. A. 17" 37 33' Decl. + 2 4 38' 1909.340 -342 378 259.78 260.08 157^67 157-37 157-57 1909.35 259-90 157-54 The prior measures of this star are as follows : I59"75 2n 159.63 an 1886.63 1894.69 25945 259-57 Eng Eng From these measures we have for the proper motion of 83 Herculis: 0*129 in 233?o From meridian positions : Auwers 0*134 in 218?! Porter 0.124 '" 219.0 Boss 0.131 in 208.6 DM (20) 3646 (8.5-..9-O) R. A. 17' 57 m 3' Decl. + 20 58' A and DM (20) 3647 1912.353 154*43 I45"o6 .389 154-63 145.75 .408 154.50 145-89 1912.38 154-52 145-57 A and star 9.001 1912.353 284?23 144*94 .389 284.05 145-05 .408 284.00 145-23 1912.38 284.09 145-07 In consequence of an error in plotting these stars on the DM maps, it was supposed that there had been considerable change in the relative position, but this is not confirmed. From meridian observations we have for AB : 1865 I547 146*4 Bruxelles 1875 154-3 M4-9 A. G. Ber. Piazzi XVII. 368 (7.;...io.o) R. A. 18" i m 7' Uecl. + 8 52' 1908.192 .249 .252 331 240. 13 240.13 240.03 240.13 130798 130.68 131.24 131-47 Eng P 1908.26 240.10 131.09 These are all the measures : 1893.66 239?6o 132" 19 3n 1908.26 240.10 131.09 4n The former proper motion appears to be too large : Measures ol'iog in 193^5 Stumpe 0.165 in 167.5 Porter 0.157 in 170.2 To make it certain hereafter that B has no motion, I have connected with it a 13 m star : B and C 1908.444 3743 8o"37 .460 37-80 80.46 479 37-53 80.53 1908.46 37-59 80.45 T Herculi* (Var. . . 10.3) R.A. i8 h 4 ra 34' Decl. + 31 1909.167 .186 .227 321^07 320.88 321.18 67708 66.80 67.08 1909.19 321.04 66.99 The principal star is variable. The early measures differ in distance; probably unchanged. 1877.79 32i?oo 66*93 m Bl 1879.24 320.78 68.28 in Bl DM (23) 3289 (7. 5... 10.8) R.A. 18* I i m 31' Decl. + 23 21' A and B 1908.403 .422 .425 338 3-20 3-68 128*91 129.08 129.30 1908.42 3-42 129.10 B and C (11.5) 1908.403 .422 .425 246?o 246.3 246.3 18*00 17.82 17.82 1908.42 246.2 17.88 The only other measures are: 1877.72 3 1879-27 3 77 130*62 .49 129.19 in in Bl Bl 5-2 Burnham: Measures of Proper Motion Stars DM (23) 3299 (7.0... 9. 3) R. A. 18" I3 ra 8" Decl. + 23 15' A and B 1908.40.3 I25?8s i55"89 .422 425 125.63 125-85 155-99 156.20 1908.42 125.78 156.03 A and a (n.8) 1908.422 222?s8 425 222.50 38.02 1908.42 222.54 The only earlier measure is : 1878.50 125^91 156' 37-8i Bl 109 Herculi* (4.I...IO.6) R. A. 18" i8 ra 35' Decl. + 21 43' 1909.186 -304 -340 320.50 320.63 222.00 221.50 221.84 1909.28 320.56 221.78 We have the following earlier measures of the small star : 1854.70 32O?70 204"8o in O2 1868.55 320.95 208.81 in OS 1883.54 320.52 213.79 2n H2 The several positions give for the corrected proper motion of 109 Herculis: o''3i4 in I37?6 Some of the prior values are: Auwers o''3io in I44?8 Newcomb 0.325 in 143.6 Boss 0.326 in 143.6 /. Draconi* (3.8...I2.O) R. A. 18" 23 12' Decl. + 72 41' A and B 1908.252 i8?55 I49"i9 .266 18.60 148.94 .370 19.02 149-34 .383 18.88 149.41 1908.32 18.76 149.22 B and C (13. 5) 1908.383 .422 .425 301.2 302.8 10.05 10.20 1908.41 301.5 10.18 comparison we have: I879-33 26?5o I44':6i 2n fj' 1908.32 18.76 149.22 4n p These positions give for the proper motion of % Draconis: 0^704 in I26?6 From meridian observations: Auwers 0*642 in I26?6 Groombridge 0.653 m I2 5-6 Newcomb 0.643 in 126.1 Boss 0.638 in 125.4 There are no other measures of BC. Oxford (Z 26) 50932 (12.4) R. A. 18" 30" 26?9i Decl. + 26 10' 31?! Place for 1900 from a plate of the Oxford Astrographic Catalogue taken 1907.54. The proper motion is given: o"i7o in io8?s A and B (11.9. . .12.4) 1910.414 48^70 6o"52 .436 48.70 60.14 1910.42 48.70 60.33 A and C (12.4) 1910.414 37^3 81^92 .436 37-13 81.88 1910.42 37.18 81.90 Oxford 50932 and 50936 1910 . 41 A R. A. + 42? 24 A Decl. + 7^ 1907-54 P Oxf 42-35 7-8 As these two stars are supposed to be moving in nearly opposite directions, the difference in declination should in- crease about o''3 per year. Oxford (Z 26) 50936 (10.1) R. A. 18" 31 9?26 Decl. + 26 10' 38*9 This is DM (26) 3302 (9.3). The place given is for 1900, from an astrographic plate taken 1907.54. The Oxford proper motion, deduced from this and an earlier plate, is : o''i24 in 36?o A and B (9. 3... 9. 8) 1910.414 341 65 95"42 .436 341-62 95.73 1910.42 34I-63 95-57 A and DM (26) 3297 (9.1) 1910.414 245?40 291*16 436 245.17 290.95 1910.42 245.28 291.05 The place of A, derived from the A. G. position of the com- parison star, does not indicate any sensible proper motion. DM (6) 3855 (5.0... 13.3) R.A.i8"30 m 49' Decl. + 6 35' A and B 1910.586 321 ?6 26*46 -589 -605 322.3 323.6 26.93 26.55 1910.59 322.5 26.65 53 Burnham: Measures of Proper Motion Stars A and C (n.o) 1910.586 89?22 72739 .589 88.89 72.22 .605 89.36 72.52 1910.59 89.16 72.38 The faint companion noted by Jonckheere. The large star has some proper motion : Boss 07146 in I966 DM (11) 3534 (8.8... 10.8) R.A. i8"3i"45 t Decl. + ii2i 1910.299 -337 -395 264?88 264.78 264.62 I327i3 132.01 132.19 1910.34 264.76 132.11 The prior measures are too discordant in distance for any inference with respect to change. 1876.78 26s?lS 134794 in Bl I879-SS 264.90 132.53 2n Bl Oxford (Z 26) 50702 (11.5) R.A. i8>34 1 4;36 Decl. + 25 38' 1376 Place (1900) from the Oxford Astrographic Catalogue; plate taken 1907.54. From a comparison of the photographic positions the proper motion is given : 0^165 in I928 A and B (n.i.. .10.9) 1910.471 i63?io 119708 -473 163.28 118.51 .400 163.08 118.85 1910.48 163.15 118.81 B and C (n.i) 1910.471 205?7o 64792 473 205.58 65.39 .490 205.62 65.14 1910.48 205.63 65.15 The comparison stars should appear on both plates. A and DM (25) 3581 (8.4) 1910.47 AR. A. I3o?46 ADecl. + so72o 3 Aquila* (5.0.. .13.1) R. A. 18" 36 59' Decl. 8 24' A and C 1910.605 I95?46 37"i6 .608 .644_ 1910.62 194.03 195-17 37-84 37-77 194.89 37.59 Noted by Jonckheere. There is a nearer and fainter sta 14- 5m: 1910.608 97?3 13758 The proper motion of 3 Aquilac, if any, is very uncertain : Auwers o7oi8 in 340^8 Boss 0.022 in 62.6 DM (39) 3505 (6. 5... 9-5) R. A. 18" 39 17' Decl. + 39 11' 1910.184 .206 .225 191.77 I9L49 6o''34 60.48 60.15 1910.20 I9L55 60.32 A sometimes called red; only reddish or yellow. C is DM (39) 3504. No evidence of proper motion in the measures 1877.93 191 "47 6o7io 2n Bl 111 Herculi* (4. 5... 10.5) R. A. 18" 41 43' Decl. + 18 3' A and B 1907.293 245?82 98750 .312 331 245.55 245.72 98.33 98.67 1907.31 1907.293 .312 331 245.70 A and C (10.0) 257?os 256.38 256.82 98.50 120.56 120.60 1907.31 256.75 120.60 A and D (10.5) 1007.293 204?o8 I337i4 .312 263.45 132.60 331 263.47 133-01 1907.31 1907.312 .329 .331 263.67 BandC 204?s 294.5 294.7 132.92 3o7o6 29.85 29.84 1907.32 1907-312 .329 .331 294.6 CandD 3I2?3 312.1 312.0 29.92 19.67 19.98 1907.32 312.1 19.80 The only other measures are: AB 1886.76 247?2i 06721 2n AC 1886.76 257.73 "8.34 2n 1894.71 257.52 119.98 2n AD 1886.76 264.83 131.19 2n 1894.78 264.45 132.14 2n Eng Eng Eng Eng Eng 54 Burnham: Measures of Proper Motion Stars Comparing these with the recent positions we have the proper motion of the large star from the several companions : AB R. A. + 0^052 Decl. + oTisg AC .060 .127 AD .066 .097 DM (33) 3295 (7.1... 12. 6) R. A. 18" 57 22" Decl. + 33 47' 1911.162 I778 25*71 .184 178.8 25.44 4-0.057 4-0.128 .200 178.8 25.64 Hence the mean proper motion is: o''i4O in 24?o There is no evidence of any relative change in this group of small stars. For a verification of this hereafter, I have con- nected them directly. The proper motion of in Herculis from observations on the meridian is given : Auwers 0*127 in 21 ?7 Newcomb 0.116 in 28.6 Boss 0.123 in 30.6 Porter 0.130 in 23.2 1911.18 178.5 25.60 Faint companion noted by Jonckheere ; no other measures. No proper motion found in the star catalogues. R Aquilae (Var...II.l) R. A. 19*0 36' Decl. 4- 8 3' A and B 1910.397 296?I3 74*35 .452 296.12 74.42 455 296.48 74.57 e Aquilae (4. 3. ..10.2) 1910.43 296.24 74.45 A and C (10.8) 1910.397 258^85 180*41 .452 258.83 180.16 455 259.08 180. 13 R. A. 18" 54 11" Decl. 4- 14 54' A and B 1909.304 i86?7o 131*65 .340 186.65 130.80 .400 186.85 131.09 1910.43 258.92 180.23 Change doubtful. 1878.55 294?73 73*51 2n Bl The more distant star is DM (8) 3968 (9.5). The prior 1909.35 186.73 131-18 A and C (10.3) 1909.304 163? 13 148*25 .340 162.82 148.10 .400 163.38 147.83 1877.75 258?78 I78:'93 m Bl 1879.33 258.52 180.60 in Bl Lalande 35851 (5. 5... 9. 5) 1909.35 163.11 148.06 Band C 1009.400 ioo?7i 59*89 .455 100.80 59.32 .458 100.58 59.44 R. A. 19" 2 34 s Decl. 4- 1 6 40' 1908.192 275?o8 119*62 .252 274.88 119.96 .288 275.05 120.31 331 274.97 119-52 1909.44 100.70 59.55 These stars have been measured as follows : AB 1887.59 i87?25 132^43 2n Eng 1894.71 187.35 132.75 2n Eng AC 1887.58 163.67 148.57 in Eng From the positions of AB the proper motion of e Aquilae is: o"io5 in 22O?9 The measures of AC give substantially the same value, but as the early position depends on a single observation, it can add nothing to the other, and for the present should be re- jected. The movement of the large star has been given from meridian positions : Auwers o"i03 in 229?4 Newcomb o.ioi in 216.8 1908.26 275.00 119.93 B is DM (16) 3751. The measures are : 1893.67 273?22 119*57 2n Eng 1908.26 275.00 119-93 4" P The several values of the proper motion are : Measures 0*257 in I78?6 A. G. Berlin 0.297 in 171.4 Porter 0.314 in 165.7 Paris 0.337 m 162.1 DM (18) 4011 (6. 3... 10. 9) R. A. 19" 10 14" Decl. 4- 18 18' 1909.496 i65?38 i36"96 .512 165.41 136.60 515 165.30 136.97 Boss o.ioo in 219.6 1909.51 165.36 136.84 55 Burnham: Measures of Proper Motion Stars The principal star, according to A. G. Berlin, has a con- siderable proper motion : 07,132 in 283?2 The measures point to a much smaller value, if there is any motion at all. 26 Aquilae (S-2...I2.O) R. A. 19" 14" 9' Decl. 5 38' 1909.666 I2?23 120702 .703 12. 60 120.00 .706 12.10 120.26 8 Draconit (3. 3. ..12. 5) R. A. 19" 12" 30' Decl. + 67 27' 1007.312 352?os 88^28 .463 3SI-98 87.87 465 351-97 88.10 1909.69 12.31 120.09 The small star has not been previously measured. The proper motion of 26 Aquilae is : Auwers o"o99 in 52^8 Porter 0.095 in 57-7 Boss o.lio in 69.3 1907.41 352.00 88.08 The only previous measure is : I879-35 354-3 9"35 in p" As this is on a single night, and therefore subject to acci- Groombridge 2835 (6 . 5 . . . to) R. A. 19" 18 51- Decl. + 64 10' 1009-455 i8i?38 m?oo .512 181.21 111.85 .515 181.30 112.03 of the other values. Measures o"isi in 5o?8 Auwers 0.119 m 49-8 Newcomb 0.134 in 49.4 Boss 0.133 in 49.1 DM (19) 3975 (6. 8... 9.3) R. A. 19" 13 33' Decl. + 19 23' 1911.302 3i775 93*37 334 318.27 92.99 356 318.17 92.61 1909.49 181.30 in- 93 No other position of the small star. The proper motion of the large star is practically zero : Groombridge ol'ois in 7o?9 31 Aquilae (5. 3... 8.7) R. A. 19" 19" 15- Decl. + 11 41' AandB 1907-731 34474 io6?56 750 344-42 106.28 772 344-54 106.45 I9H-33 318.06 92.99 The principal star said to be variable. The smaller is DM (19) 3974- The proper motion of A, if any, is very small : A. G. Berlin 01*017 in 3O$?2 I007-75 344-57 106.43 B and C (9.7) 1907-731 254?oo 42^26 750 253.72 42.24 772 253-47 42-50 1875 3i8?6 91*8 A. G. Berlin Oxford (Z 26) SS357 (8.4) R. A. 19' I3 m 44'96 Decl. + 25 10' 57^9 Place from the Oxford Astrographic Catalogue for 1900; plate taken 1907.78. The proper motion from photographic positions is given: 01*274 in 2O?6 A and DM (25) 3783 (9-5) 1910.299 38?55 SaTig 395 38.40 82.28 436 38.70 82.47 1907-75 253.73 42-33 The measures in this case are sufficient in number of nights, and in the time interval, to give the proper motion far more accurately than by any other method. For AB we have: 1852.70 4?os 142757 2n O2 1858.08 2.83 138.47 2n OS 1865.80 0.48 133.05 in O2 I877-58 356.82 124.72 2n O2 1907-75 344-57 106.43 3n B is DM (11) 3834, and has a small proper motion. The measures of AB give for the apparent motion of the principal star: oTo86 in 43? 4 The measures of BC are : 1910.38 38.55 82.31 A is DM (25) 3780 (8.0). The comparison star not in A. (;. and no accurate place found elsewhere. The rough DM posi- tions give, 54 : 120". 1852.70 247?27 42^59 2n O2 1858.08 248.08 42.25 2n O2 1865.80 248.82 42.62 in O2 1877.58 249.85 42.20 2n O2 1907.75 253.73 42.33 3n p Burnham: Measures of Proper Motion Stars Hence the proper motion of B is : o"o8s in i62?9 Therefore the real proper motion of 31 Aquilae is : o''947 in 47?9 This is given from transit observations : Auwers o"96> in 47^7 Porter 0.974 in 47-9 Newcomb 0.964 in 49.1 Boss 0.961 in 49.0 8 Aquilae (3.7 . . .11.2) R. A. 19" 19 27* Decl. + 2 57' 1907.291 .293 .312 27o?8 3 270.90 270.30 109.39 108.62 108.57 1907.30 270.67 108.86 : only prior measure which can be used for comparison is : I879-3S 271^85 ioi:'33 2n p" Hence the proper motion of the large star is : Measures o"28o in 75?2 Auwers 0.245 in 69.2 Newcomb 0.264 in 72.3 Boss 0.265 in 73.1 DM (1) 4004 (7. 8... 10. 9) R. A. 19" 2i m 48' Decl. + 1 56' 1909.304 342 378 253.10 253.72 253-45 115 "70 115.02 115-23 1909.34 253-42 115-32 proper motion has been assigned to this star, and the measures show no change. 1879.06 253^27 ii5"i7 2" Bl DM (1) 4021 (7. i... 10. 9) R. A. 19" 25 i" Decl. + i 46' 1909.304 286^65 ui"oo .342 286.92 110.74 .378 286.93 110.91 1909.34 286.83 no.t The first measures give a larger distance. 1879.07 286?40 Ii3"o7 2n Bl The apparent change may be due to a small proper motion in A, or to errors of observation. I do not find that any move- ment has been assigned to the principal star from meridian positions. Another set of measures at some later time will show whether or not the change is real. It is not probable hat B has any motion. To determine this hereafter by a single measure, I have connected a third star 11.2 m: B and C (11.2) 1909.381 215^20 .438 215.03 75.95 1909.41 215.11 75.83 Cygni 176 (6. 5... 14. 5) R. A. 19" 26 26' Decl. + 35 59' A and B 1911.184 28? 5 22*42 .241 30.5 22.46 1911.21 29.5 22.44 A and C (13.7) 1911.184 I59?2 27^56 .200 160.1 27.69 .241 158.5 27.83 1911.21 159-3 27.69 No other measures. I do not find that any proper motion has been given the large star. The faint companions were detected by Jonckheere. DM (7) 4124 (9.0... 12. 4) R. A. 19" 27-" 14' Decl. + 7 9' A and B 1910.395 249?! 8?44 397 252.3 8.65 .452 254.2 8.52 1910.41 251.9 A and C (n.i) 1910.395 2OO?25 .397 200.07 .452 200.33 8.54 90.57 90.34 90.31 1910.41 200.22 90.41 This small star, which is 70* preceding n Aquilae, is given a proper motion of o''3io in 177^2 by Battermann. No other measures. Lalande 37093 (9.0. ..II. 3) R. A. 19" 29 36" Decl. o 30' 1909.570 .589 592 257.98 258.23 112.81 113-32 1909-58 258.24 113-04 No other measures of the small star. The following proper motions are from the meridian positions : Paris o?4O9 in 184^2 Porter 0.340 in 193.5 57 Burnham: Measures of Proper Motion Stars Lalande 37110 (8.O.. R. A. 19" 29 52' Decl. 1909.551 228?30 .570 228.15 .589 228.45 .12.0) -o 9 ' 109.24 108.93 1909-57 228.30 109.08 No other measures. The proper motion of the principal star is given from meridian positions : Paris 0^423 in i8o?o Porter 0.370 in 188.2 Lalande 37111 (7. 2. ..11.7) R. A. 19* 29 52' Decl. o i' 1909.551 26s?32 67:77 A is reddish and variable, 7 m to 13 m. At the time of these measures the magnitude was about 10.7. These stars are respectively DM (49) 3064 and 3065, and closely sf 9 Cygni. The micrometer positions are not accordant in distance, but probably without change. 1876.70 H?22 91^79 in Bl 1879.25 13.45 90.77 m Bl 1881 12.7 90.3 A. G. Bonn The proper motion of R Cygni is unknown from the cata- logue positions : Groombridge o"oi8 in I44?6 Boss 0.014 in 218.3 570 .589 265.88 265.72 67.72 67.47 1909.57 265.64 67.65 I do not find any proper motion assigned to this star. I Aquila* (4. 5... 13. 2) R. A. 19" 30 31 ' Decl. i 33' i6i?3 161.1 160.8 1910.570 .586 .589 47.00 47.10 46.93 1910.58 161.1 47.01 The principal star appears from the meridian observations to have no sensible proper motion : Auwers oToi2 in 244?5 Boss 0.018 in 194.8 Aquilae 140 (6. 0... 14.0) R. A. 19" 31"' 13' Decl. + 11 o' A and B 1910.570 s8?8 16^72 .589 55-7 17.78 1910.58 57.2 17.25 A and C (13.2) 1910.570 3i5?p 2o!'io .586 314.7 20.10 589 3I5.7 20.29 1910.58 315.4 20.16 Small stars detected by Jonckheere. No proper motion found for the large star. R Cygni (Var... 9 . 7 ) R. A. 19' 33" 36' Decl. + 49 56' 1009.266 14? 15 9o"6o .342 13.69 90.93 381 13.00 90.86 1909-33 13-91 90.80 a Sagittae (4.0.. .12.8) R. A. 19" 34 ra 44 s Decl. + 17 44' I798 180.4 179-8 1910.570 .586 .589 33-24 32.78 32.86 1910.58 180.0 32.96 Noted by Jonckheere. There is a 14. 5m star, 249 : 35'.'8. The proper motion of a Sagittae is small and uncertain : Auwers 0^012 in i8o?o Boss 0.036 in 153.8 DM (32) 3522 (8.O...IO.8) R. A. 19" 36 24' Decl. + 32 20' A and B 1909.342 2I2?52 70:61 .381 212.87 70.02 .400 212.85 70.71 1909-37 212.75 70.45 A and C (ii.i) 1909.342 48?95 82:69 .381 48.97 82.64 .400 49-05 82.84 1909-37 48.99 A and D (10.7) 1909.381 268?63 .400 268.80 1909.39 82.72 93"58 93-90 268.71 93.74 Probably unchanged. The principal star is reddish. AB 1878.65 2i2?57 71:46 3 n Bl AC 1878.81 49.38 84.22 in Bl 1879.39 47-93 82.64 in Bl AD 1878.68 268.37 93-71 3n Bl Piazzi XIX. 230 (5. 6... II. 8) R. A. 19" 36 43' Decl. 15 45' 1910.605 I28?90 81^84 .608 128.60 81.77 .627 129.12 81.70 1910.61 81.77 Burnham: Measures of Proper Motion Stars No other measures. The proper motion is given: Boss 0:236 in I4O?5 Porter 0.227 in 143.3 Groombridge 2909 (5. 5. ..12. 2) R. A. 19" 37 m 8" Decl. + 45 14' 1911-509 .526 529 I438o 144-iS 144.47 85-02 85.17 1911.52 144.14 84.84 No other measures. The proper motion is given : o"i32 in 45? i Groombridge Boss 0.142 in in 42.4 Groombridge 2914 and 2915 (8. 2... 8. 2) R. A. 19" 38 19' Decl. + 39 43' 1909.266 .340 .342 164*65 164.85 164.82 102:44 101.91 101.08 1909.31 164.77 102. I I The motion from meridian observations is very doubtful : Auwers o"oo8 in 3I5?S Newcomb o.on in 107.2 Boss 0.014 in 106.8 Lalande 37626 (7. 2... 9. 5) R. A. 19" 41 27' Decl. + 48' A and B 1908.383 I20?o8 101:50 .422 .441 444 120.83 120.70 120.63 101.28 100.92 101.64 1908.42 120.78 B and C(ii.o) 1908.422 I95?6o .441 195.25 444 195-53 101.33 30:72 30.72 30.77 1908.43 I95-46 30.74 For comparison we have: 1893.65 I23?03 I02:'o4 an 1908.42 120.78 101.33 4n Eng P proper motions of these stars are given in the Groom- bridge catalogue: No. 2914 0:047 in 291 ?2 No. 2915 0.044 in 217.2 There are no other direct measures. The following approxi- mate places are from meridian observations : 1813 i&4?6 98:8 Groombridge 1825 163.5 100.5 Weisse 1846 164.5 99.0 Radcliffe 1880 164.3 101.8 A.G.Lund 1891 163.8 101.9 Gr. lo-year It is evident that there has been very little if any relative change, and that the proper motions are probably identical. One or both of the values given above must be in error. It will be noticed that the motions in declination are in opposite direc- tions, and therefore the distance of the components should in- crease annually nearly o''os. *; Aquilae (3.7...n.o) R. A. 19" 40 33' Decl. + 10 19' 1907.714 .731 .750 257?43 257.83 257.67 I33"i3 132.61 132.45 1907.73 257.64 132.73 For comparison there is only this : 1879.42 257^70 132:58 2n f5 s It is evident that the proper motion of the large star, if any at all, is much less than the unavoidable errors of positions with the micrometer, as well as the meridian circle; and that only from direct measures, separated by long intervals of time, can any relative motion be certainly shown. There are no other measures of C. B is DM (o) 4215. The measures of AB give for the proper motion of the principal star: 0:275 in 201 ?8 This has been given from meridian positions : Stumpe 0:291 in 2o6?6 Porter 0.228 in 200.8 A. G. Nico. 0.238 in 180.0 Paris 0.233 in 180.0 o Aquilae (5.3.. .12.8) R. A. 19" 45 m 17 s Decl. + 10 7' 1910.570 222?7 22:69 .586 221.3 22.93 .589 222.6 23.20 1910.58 222.2 22.94 This companion was noted by Jonckheere. There is also a 13.5 m star, i6i?5:2O?5. The proper motion of o Aquilae is given : Auwers 0*262 in 124^6 Boss 0.273 in 122. o Porter 0.260 in 122.6 y.Cygni (Var...io.8) R. A. 19* 45 m 57' Decl. + 32 37' 1909.342 .381 .400 25432 254-67 254.52 158:49 157.89 157.63 1909.37 254-50 158.00 59 Burnham: Measures of Proper Motion Stars Bl Bl The principal star, DM (32) 3593, is variable, 5 m to 13.5 m. The former measures disagree in distance, and therefore change is uncertain. 1880.32 254?45 i6o"i8 in 1881.78 254.23 159.11 in The variable has a small proper motion : Boss 0:093 in 234?5 PJazzi XIX. 306 (6.5. . .12.0) R. A. 19' 46" 26' Decl. + 1 1 20' I009-SSI 570 .589 I599 I59-98 159.76 94-34 93.83 1909-57 159.88 93-88 Several faint stars nearer than that measured. No other observations. The proper motion is given: Paris 0*470 in 219:0 Porter 0.481 in 229.9 Groombridge 2961 (8.O...II.I) R. A. I9 48 46' Ded. + 38 27' 1909.340 342 .381 313.75 313.32 43:76 43-70 43.62 1909-35 3I3-55 43.69 No other measures. The proper motion of the principal star is given : Groombridge 0:321 in 357?o Porter 0.358 in 354.9 Gr. lo-ycar 0.350 in 360.0 DM (43) 3425 (8.2. ..11.2) R. A. 19" 53 20' Decl. + 43 56' 1909.342 .381 .400 i6?03 15.97 16.28 56T4I 56.29 56.03 1909-37 16.09 56.24 The principal star is red; erroneously called (43) 3422 in Bl. The early positions are discordant in distance; probably un- changed. 1876.80 is76 56:80 in Bl 1880.26 16.03 55-86 in Bl 15 Sagittae (6.O. . .8.8) R. A. 19' 58 m 43' Decl. + 16 45' A and B 1908.326 274?so 194:27 .383 .403 1908.37 274.82 274-93 274.78 194-08 194-12 194.16 A and C (7.0) 1908.326 3i8?o7 203:25 383 318.48 203.14 .403 318.48 203.39 Eng Eng 1908.37 3i8.34 203.26 C is Bradley 2567, and B is DM (16) 4117. The only direct measures are : AB 1886.78 272?4i 201:42 2n AC 1886.78 315.04 202.80 2n From the two comparison stars the apparent motion of A is : From AB 0:508 in 225?3 From AC 0.542 in 224.4 The proper motion of 15 Sagittae has been given from meridian positions : Auwers 0:571 in 228?4 Porter 0.573 in 225.6 Boss 0.577 in 224.4 This would seem to be a little too large, as it is not probable that the small star B has any sensible motion. The 7 m star would be expected to have some movement, and undoubtedly has, although the amount is small, and un- certain. A. G. Berlin o!'ois in 28?9 Porter 0.037 m 4-4 Auwers 0.012 in 330.1 For an independent determination of the proper motions of the two bright stars, and showing the absence of change in B, if that is the fact, I have connected each with a small star. A and a (11.7) 1908.326 320?23 58:'48 .383 320.88 58.74 .403 320.53 58.79 1908.37 1908.422 .425 444 320.55 B and b (9.2) 23I?00 231 . 12 230.80 58.67 183:22 183.08 183.25 1908.43 1908.326 .383 .403 230.97 Candc (11.8) i83?6o 184.05 '83.93 183.18 93:38 93.85 93-59 1908.37 183.86 93-45 DM (20) 4417 (8.9... 13. 5) R. A. 19" 59 48' Decl. -f 20 18' A and B 1909-493 246^9 13:05 .496 249-5 13-13 1909.49 248.2 A and C (12.1) 1909.381 I03?8o -493 103-87 .496 103.17 1909.46 103.61 13.09 59:34 58.95 59.28 59-19 60 Burnham: Measures of Proper Motion Stars A and D (12.2) large error in declination is obvious. If this is assumed to be 1909 3i 95! 77 75 ".99 i', the A. G position with the measures would give the proper 493 95- 53 75 .69 motion : 406 95- 60 75 .68 " 336 in 42 '8 1909 46 95- 63 75 79 The principal star is red. The only other measures of AD are too discordant for any inference as to change 1879.31 96?57 739 m Bl 1879.85 95.18 80.12 in Bl 27 Cygni (5. 6... 13. 8) R. A. 20" i 54' Decl. + 35 38' A and B 1909.515 .531 534 64.1 64.7 16:21 16.28 16. 10 1909-53 63.8 16.20 A and C (11.7) 1909-515 I5420 40:17 531 534 154-47 I54-83 40.11 40.32 1909-53 154-50 40.23 The small stars have not been seen before. Only a short interval will be required to show whether or not they are mov- ing with the large star. The proper motion of that is given : Auwers 0:485 in 2io?o Paris 0.467 in 209.2 Porter 0.477 in 208.7 Boss 0.495 in 207.8 Groombridge 3042 (6.0... 9. 3) R. A. 20" 3 m 4' Decl. + 52 49' Piazzi XX. 23 (7. 2... 9. 2) R. A. 20" 5 m 39" Decl. + 15 49' A and B 1908.425 isi?o8 152:43 444 .460 479 152.18 I5I-77 152.00 151.86 152.10 152.73 1908.45 151-98 152.28 B and C (n.6) 1908.425 27o?48 6 3 "92 .460 270.68 63.63 479 270-55 63.72 1908.45 270.57 63.76 1908.370 I24?95 I7o'.'53 383 124.79 170.80 403 124.85 169.73 .406 124.80 170.46 1908.39 124.85 170.38 are small star is DM (52) 2626. This is given in the cata- )gues O. Arg. N. and A. G. Harvard. The direct measures are: 1893.98 123^7 171:84 3n Eng 1908.39 124.85 170.38 4n p From these positions the proper motion of Groombridge 3042 would be : The two positions of A in the first catalogue referred to differ too much to be used in this connection. In the other the Measures 0:342 in SI?Q Stumpe 0.304 in 40.3 Porter 0.307 in 39.6 Groombridge 0.334 in 40.0 A. G. Har. 0.347 in 43.3 Boss 0.334 in 41.0 B is DM (15) 4075. No other measures of C. 1893.80 I5273 I44''o2 2n Eng 1908.45 151-98 152.28 4n p These positions give for the proper motion of the principal star: 0:582 in 3I9?4 The correction to the former values from meridian observa- tions is small. Stumpe 0:587 in 307 ?4 A. G. Berlin 0.580 in 313.4 Porter 0.596 in 312.6 I Capricorn! (5.8...I2.O) R. A. 20" 5 45' Decl. 12 58' 1909.666 258?97 71:57 .703 258.62 71.48 .706 258.87 71.81 1909.69 258.82 71.62 No other measures. The proper motion is given : Auwers 0:239 in I38T8 Porter 0.259 in 138.6 Newcomb 0.253 in 138.3 Boss 0.269 in 135.9 DM (47) 3031 (9. 4... 9. 5) R. A.20 h 5 m 5i" Decl. + 47 31' 1909.342 .476 493 139.42 139-45 139-85 145.15 145.11 I45-65 1909.44 139.57 145.39 A is reddish. Apparently without any proper motion. 1879.05 I3968 145^05 2n Bl 61 Burnham: Measures of Proper Motion Stars DM (35) 4013 (8.0... 10. 3) R. A. 20" 6 27' Decl. + 35 46' 1909.515 .531 I09?8o 109.90 53*35 53.06 1909.52 109.85 53.20 The other measures are discordant in distance: 1878.90 no?o8 53*94 in 1879.40 109.95 52.56 in DM (38') 3957 (8. 2... 7. 2) R. A. 20" 9 2* Dccl. + 38 22' A and B 1909.493 3548o 131*92 Bl Bl .515 .531 355.07 355.15 132.40 132.13 1909.51 355-01 132.15 A and C (9.3) 1909.493 io6!o7 155*50 .515 106.10 155-73 .531 106.10 155.91 1909.51 106.09 I55.7I The primary is a red star; the other is DM (38) 3956. For these stars we have the following positions : 1879-15 35524 132765 2n Bl 1881 354-8 133.0 A. G. Lund. There is an obvious error in one of the former distances of the small star : 1878.90 io6?02 156*99 in Bl 1879.40 106.52 155.92 in Bl DM (36) 3956 (8.0. . .9.8) R. A. 20" lo 1 " 2- Decl. + 36 i 1909.493 .496 .415 787 117.80 "7-73 113*12 "3-74 114.03 1909.47 117.80 113-63 This star is 8' s of 29 Cygni. It appears to have no sensible proper motion. 1878.16 II7?69 113763 2n Bl A and C (10.0) 1908.266 22?73 222"6o .383 23.08 223.09 .403 23.22 222.82 1908.35 23.01 222.84 A and a (12.2) 1908.266 341 "32 38*70 -383 34I.83 38.93 .403 34i.i8 38.91 1908.35 341-44 38.85 B and D (10.6) 1908.422 I20?20 217*15 .425 120.25 217.22 1908.42 120.22 2I7.I8 29 Cygni (5.0... 7.0) R. A. 20* 10" 2' Decl. + 36 26' A and B 1908.266 I5305 212*50 383 403 1908.35 153.52 153-25 I53-27 212.51 212.35 212.45 The proper motion of the principal star is given from me- ridian observations: Auwers o"io6 in n?8 Porter 0.106 in 33.9 Boss 0.094 in 43.8 B is Bradley 2599 with a small proper motion : Auwers 0*044 in 334^2 For comparison we have the following with the micrometer : A and B 1887.82 153^07 2i2:'o4 in Eng 1908.35 153.27 212.45 3" P A and C 1887.82 23^40 225*16 in Eng 1894.84 23.22 225.00 in Eng 1908.35 23.01 222.84 3n P B and D 1894.85 I20?42 2i6"54 in Eng 1908.42 120.22 217.18 2n P The measures of AB show no sensible change. A mean of the first two positions of AC compared with the last gives for the apparent movement of A: 0*148 in so?6 It is not likely that a star of this magnitude has any sensible motion, and the larger value may be due to errors in the measures. The early positions are all derived from single nights, and therefore subject to some question. All these stars should be re-measured after a suitable interval. There are many stars in the field; I have measured one of the nearest to , Groombridge 3127 (8.0... 9. 5) R. A. 20" 13 28" Decl. + 49 55' A and B 1908.370 02?03 57*24 .383 91.68 57.23 .482 91.77 57.07 .518 92.02 57-12 1908.44 91.88 57.16 Burnham: Measures of Proper Motion Stars A and C (9. 7) U Cygni (8.7... 8.8) 1908.370 i7373 107 ''04 R. A. 20" 15 53 s Decl. + 47 3i' 383 173-52 106.89 .482 173-17 IO7 . 22 1909.400 5i55 63''5i .518 I73.25 106.96 .438 51-53 63.78 1908.44 173.42 107.03 .470 S'.S" 63.53 1909.44 51-49 63.61 A and D (9 7) These stars are DM (47 ) 3077 and 3078 ; the first is variable 1908.370 333 15 i 18*04 from about 7 m to 10 m. There seems to be no sensible proper 383 332.95 117.78 motion in either. .482 5i8 333-10 332.58 117.84 118.09 1875 52?o 1878.63 51-57 63.55 A. G. Bonn 2n Bl 1908.44 332.94 117.94 A and E (9 7) 1908.370 I28?75 155783 DM (36) 4025 (9.3 .-9-5) .383 128.53 155.75 .482 128.97 155.88 R. A. 20" i6 m 50" Decl. + 36 33' .5i8 128.22 155.41 1909.400 no?6s I25"95 1908.44 128.62 I55.72 493 110.43 125.58 \ .496 no. 60 125.87 B and 6 (12 .0) 1909.46 110.56 125.80 1908.370 203?3 I0'/20 383 203.5 10.52 The smaller star is DM (36) 4028. .482 204-3 IO.27 The only prior measures are the following : .518 205.0 10.22 1880.58 iio?72 I2 4 ':6s 2n Bl 1908.44 204.0 10.30 D and d (n -9) 1908.482 2I2?70 86':88 Piazzi XX . 120 (8.6 ..10.7) 5i8 212.48 86.87 R A W T7 m 29' Decl + 10 50' 1908.50 212.59 86.87 A and B The only other measures are : 1908.422 83?94 52"39 AB 1892.76 96? 10 54?45 2n Eng .425 84.30 52.23 AC 1892.76 175-82 109.95 2n Eng -441 84.25 52.05 AD 1892.76 33L45 117.71 2n Eng 1908.43 84.16 52.22 AE 1892.76 130.88 155.69 in Eng From these measures the corrected proper motion of the principal star is: AB R. A. o!'i9i Decl. o"249 AC .271 .213 AD 259 .103 AE 253 .301 0.244 0.216 From the mean result of all the measures we have : 0^325 in 228^6 There seems to be some error in the measures of AD. It is not probable that the small star has any motion. To make this certain hereafter, I have connected a faint star. The proper motion of Groombridge 3127 has been given from meridian positions: Greenwich 0*304 in 227^3 Paris 0.288 in 226.6 A. G. Bonn 0.335 in 230.9 Porter 0.299 in 228.5 A and C (10.0) 1908.422 I02?77 iso"3o .425 102.64 150.10 .441 102.65 149.92 1908.43 102.69 150.11 The other measures are : AB 1891.80 86?62 so"i9 in AC 1891.80 103.88 149.16 2n Eng Eng From these positions the annual movement of the principal star is: AB R. A. o"m Decl. o'' 141 AC .081 .170 0.096 -0.155 The proper motion of the principal star is therefore: o"i82 in 2ii?8 From meridian observations : Stumpe o"2O4 in 2i7?4 Porter 0.186 in 221.7 Burnham: Measures of Proper Motion Stars DM (38) 4063 (8. 9... 12.0) R. A. 20" 19" 24' Decl. + 38 6' A and B 1909.400 493 515 3I975 319-18 318.97 38.60 38.60 1009.47 319-30 38.51 A and C (9.2) 1909.400 295?88 66:55 493 295.97 66.34 S'5 295-83 66.53 1909.47 295.89 66.47 C is DM (38) 4062. These stars are in the cluster, h 2078 (= M 29). The only other measures are : AB 1879.31 319^2 38:62 in f!f AC 1879.31 295.1 66.27 in p" Evidently unchanged. Oxford ( Z 26 > 66211 (12.2. . .13.1) R.A.2o'2i m 5!i6 Decl. + 26 32' 2573 The place of the larger star, for 1900, is from an Oxford astrographic plate taken 1904.76. From a comparison of this with an earlier photograph, it appears that both stars have a proper motion which is probably the same : A 0:142 in 200?2 B 0.135 in 280.7 A and B (10.8.. .10.9) 1910.299 232?ss 67:55 337 232.63 66.84 375 232.47 67.72 1910.34 232.55 67.37 B and C (10.8) 1910.337 232?63 164:42 375 232.93 164.03 397 232.60 164.27 1910.37 232.72 164.24 The reduced Oxford places give for AB, 232:5 : 68To. A and DM (26) 3902 (9.0) 1910.30 AR. A. +69:6 A Decl. 74723 A and DM (26) 3895 (9-5) 1910.30 AR. A. + 3i'.s A Decl. + 146:82 A comparison of the Oxford and A. G. meridian positions of these stars does not indicate any sensible motion in A. Later measures of BC will show what the fact is. DM (26) 3897 (8. 2... 9.6) R. A. 20' 21" 34' Decl. + 26 17' A and B 1910.337 72.6o 75^74 375 72.00 75-89 .397 72.63 75.62 1910.37 72.71 75.65 The small star is DM (26) 3898. No other micrometer measures. 1875 72?3 76:5 A. G. Camb. B has a small companion not previously seen : B and C (12.5) 1910.337 '355-7 2749 397 357-0 2.15 1910.36 356.3 2.32 Oxford ( Z 26) 66226 (10.6) R. A. 20" 25'" 58^20 Decl. + 26 30' 40:5 Place for 1900, from a plate of the Oxford Astrographic Catalogue taken 1904.76. The photographic positions give the proper motion : oI'iSo in iQ4?3 This is DM (26) 3915 (9.5) ; not in A. G. Camb. A and B (9. 5... 13.0) 1910.455 255?55 22:57 .471 256.58 22.91 .473 254.05 22.29 1910.47 255.39 22.59 A and C (10.0) 1910.455 27i?88 io8''i2 .471 272.20 108.02 .473 271.65 107.87 1910.47 271.91 108.00 A and DM (26) 3920 (9.4) 1910.5 AR. A. + 08! 4 A Decl. 97"5 P looo 98.4 100.7 Oxf. A. G. 47 Cygni (4.8. ..10.4) R. A. 20" 29" 17' Decl. + 34 50' 1009.438 .458 .512 IOO?5 190.42 100.30 "7*74 117-74 "7-45 1909.47 190.41 117-64 The meridian observations give 47 Cygni no sensible proper motion, and this is confirmed by the measures of the small star: 1880.30 ioo?52 "7"63 2n BI From the catalogues we have : Auwers 0:018 in 24O?8 Boss 0.014 in 100.0 Oxford (Z 26) 66463 (10.2) R. A. 20" 31 2s!o6 Decl. + 25 2' 12:1 This is DM (24) 4182 (9.5). In nearly every case the Oxford photographic magnitudes make the small stars about three- fourths of a magnitude too faint, as compared with the values assigned in visual observations. The place given here Burnham: Measures of Proper Motion Stars is for 1900 from a plate taken 1904.76. The photographic positions give the proper motion : 07228 in 237?7 With the A. G. position the change is smaller and uncertain. A and B (9.6.. .11.3) 1910.512 259?62 192700 .529 260.17 192.21 1910.52 259.89 192.10 Bradley 2669 (6.8. ..10. 8) R. A. 20" 34 7' Decl. + 10 49' 1908.383 .422 .425 8?35 8.10 8.13 192730 192.39 192.31 Eng Eng 1908.41 ison we have : 8?77 8.43 8.19 194-50 192.33 211 3 n 1886.79 1894.13 1908.41 8.19 192.33 3n P These positions are not entirely consistent. Comparing the last with a mean of the first two, the proper motion of the large star is : o7ii4 in 352?2 The meridian observations give : Auwers 07130 in 39^5 Porter 0.090 in 360.0 Lalande 39956 R. A. 20" 35 20' (6. 5.. .11.6) Decl. +19 30' I909.S5I 573 .589 2 4 ?72 24-73 24.42 98795 98.94 98-51 1909.57 24.62 98.80 other measures. The proper motion has been found : Paris 07383 in 32^6 Porter 0.387 in 26.0 75 Draconis (5.0. ..10.5) R. A. 20" 35 m 43' Decl. + 8i5' A and B 1908.383 I3?78 109^58 .403 .422 13.05 13.48 109.56 109.38 1908.40 13.44 109.51 A and C (6.5) 1908.383 284^48 197793 .403 284.45 197.64 .422 284.20 197-81 1908.40 284.38 197.79 No other measures of B, and only this of AC: 1884.31 28s?27 198742 2n The proper motion of 75 Draconis is small and uncertain : Auwers o7o22 in 105^8 Boss 0.031 in 65.4 C is Bradley 2701, and according to Auwers has a proper motion of 07042 in 90. 74 Draconic (6.0... 7. 5) R. A. 20" 36" 20" Decl. + 80 40' A and B 1908.252 38?20 214719 .370 .383 38.43 38.05 214.44 214.68 1908.33 38.23 214.44 B andC (10.7) 1908.252 .370 .383 3o6?23 306.75 306.50 107731 107.26 107.21 1908.33 306.49 107.26 The relative motion should be accurately known from these measures : 1851.87 4o!i2 214729 in O2 1884.32 39.30 214.93 2n H2 1908.33 38.23 214.44 3n P These positions give for the apparent movement of the larger star: 07124 in I3i?2 The proper motion of 74 Draconis is given from meridian observations : Auwers 0^217 in 16^7 Groombridge 0.231 in 26.2 Porter 0.208 in 17.4 Assuming the last value to be correct, the real proper motion of the smaller star is : o728i in 353?7 For an independent determination of this hereafter, I have connected a third star. A more recent determination of the proper motion of A is : Boss 07227 in i8?3 S Delphi (Var...8.2) R. A. 20" 37 ro 33' Decl. + 16 39' 1909.304 .378 .381 341.20 341.46 341-33 55792 55-62 55.90 1909-35 341-33 55.8i These stars are respectively DM (16) 4351 and 4350. The first is variable from 8.5m to 12 m. At the time of these measures, the components were sensibly equal. Neither seems to have any proper motion. The measure of 1879 is corrected for an error of 180 in the angle. 1870 342i 577 1 A. G. Ber. 1879.63 341.67 55-88 2n Bl 65 Burnham: Measures of Proper Motion Stars Oxford (Z 26) 68464 (u.i) R. A. 20" 38 44?97 Decl. + 26 27' 2276 Place for 1900 from plate taken 1904.76 of the Oxford Astrographic Catalogue. The photographic positions indicate a proper motion of: 07307 in 2o6!s A and B (10.7.. .11.6) 1910.452 123^85 61773 .455 123.65 61.53 1910.45 123.75 61.63 Oxford (Z 26) 67901 (6.6) R. A. 20" 39 ra 1:67 Decl. 25 27' 53^3 This is the 7.5 m star, DM ( (25) 4347. The place for 1900 is from the Oxford Astrographic Catalogue, plate taken 1904.76. From the photographic positions the proper motion is given : o7i55 in 358?o A and B (7. 5... 15.0) 1910.452 228?! 16794 A and C (13.0) 1910.436 2o8?47 39"77 .452 208.10 39-70 1910.44 208.28 39.73 A and DM (25) 4350 (8.9) 1910.44 1875 1910.44 1875 AR. A. + 27:8 27.9 A Decl. 8672 88.1 A and DM (25) 4343 (9. i) A R. A. 31! 4 A Decl. + I23"o 31-4 124-3 Cephei 6 (Hev.) (4.7. . .9.5) R. A. 20" 42-" 22" Decl. + 57 9' A. G. A.G. 1908.331 .383 403 162.90 162.63 6876o 68.84 68.20 1908.37 162.64 68.55 The small star is DM (57) 2241. The only other measure is : 1894.00 164^87 71777 2n Eng These positions give for the proper motion of the large star : 07225 in i69?8 Both stars in A. G. With the measures and the meridian positions in 1875, the proper motion becomes : 07267 in 16775 The motion in R. A. is very small and uncertain. The other values are: Auwers 07251 in 197^6 Groombridgc 0.256 in 198.8 Boss 0.241 in 196.2 Porter 0.268 in 201.3 Oxford (Z 26) 67632 (11.3) R. A. 20* 43 m 3o!o2 Decl. + 24 56' 44"3 From the Oxford Astrographic Catalogue; place for 1900 from plate taken 1904.76. The proper motion is given : o7iss in 190? I A and B (10.7. . .10.9) 1910.512 38^68 47^09 .529 40.13 47.04 1910.52 39-40 47-o6 A and C (11.2) 1910.512 .529 IOO?25 100.93 103:20 103.28 1910.52 100.59 103.24 A and D (10.5) 1910.512 529 251.55 251-50 i55"37 155-74 1910.52 25I-S2 155-55 All of the comparison stars should show on the plates. 56 Cygni (5. 2... II. 2) R. A. 20" 45 49' Decl. + 43 39' 1907.312 329 .348 45-77 45-58 75-39 75-45 75-54 1907-33 45-67 75-46 We have the following prior measures : 1852.63 45?I5 867o3 in 1883.87 45.42 80.71 in I907-33 45-67 75-46 3n From which the proper motion of the large star is : Measures o7i94 in 41^5 Auwers 0.171 in 48.8 Boss 0.178 in 44.0 Porter 0.180 in 45.9 DM (32) 3980 (6.o...io.o) R. A. 20" 49 2' Decl. + 32 59' OS H2 P 1909.438 .458 493 58?33 58.30 58.72 187747 187.36 187.59 1909.46 Apparently unchanged. 1880.30 58?05 58.45 187707 187.47 2n Bl It is evident from this, and from the meridian positions, that the proper motion, if any, is small. Boss 07042 in 349?6 66 Burnham: Measures of Proper Motion Stars DM (61) 2068 (8. 4... 8. 8) R. A.2o"so m 5i s Decl. + 6i43' A and B 1910.493 263?i2 8s':42 .509 263.03 85.34 .512 262.78 85.20 Although the first position of CD depends upon a single measure, it is safe to assume that there is no sensible change, and that D has no proper motion. The measures of AC give for the proper motion of Lalande 40604: o':349 in 42?3 The movement from meridian observations seems to be too small : A. G. Bonn 0^273 in 41 ?s Porter 0.273 in 34.5 Both stars are given in A. G. Bonn for 1877, and the relative positions agree with the subsequent direct measures. If the first position of AB has only the ordinary errors of observation, we have at last a small star with a sensible proper motion. These measures give for the motion of A : o'.'Sil in 47?4 This seems obviously too large. To determine hereafter whether B has any real motion, I have measured BC directly. The measures of AB and AC give : BC 1908.40 69?55 86'/i2 Repeating the measures of BC and CD after a short interval, will show at once whether or not there is any real change in B. [Since the foregoing was written, I have received from Prof. Donner the following measure from the astrographic plates : 1893.77 3546 n6"40 2n Donner It will be observed that a comparison of this with the recent measures gives a smaller value for the apparent motion of A : o:'455 in 54-4 Further measures will soon determine whether or not the small star has any motion.] 18 Delphini (5.6. . .IO.2) R. A. 20" 52 39' Decl. + 10 23' A and B 1907.293 i62?35 i97"74 .312 161.93 I97.27 .348 161.83 197-79 1910.50 262.98 85.32 B is DM (61) 2067 with magnitude 8.8. Battermann gives the proper motion of 2068: o"76 in 180 For comparison we have from meridian positions : 1875 2473 98"7 A. G. Hels. Assuming that B has no movement, the proper motion of A is: o"8o in 192^9 Kit is highly probable that the smaller star is practically fixed space ; in this interest I have connected a faint star : B and C (13) 1910.509 293? 10 6o?77 512 293-53 60.51 1910.51 293.31 60.64 Lalande 40604 (7.8...IO.O) R. A. 20" 52 m 24' Decl. + 42 26' A and B 1908.383 351 83 "3''26 .406 351-65 113-09 .422 351.58 113.21 1908.40 351-69 II3-I9 A and C (9.0) 1908.383 24?62 156*19 .406 24.25 155-91 .422 24.17 I55.9I 1908.40 24.35 156.00 C and D (10.2) 1908.383 356?6s 02:' 4 o .406 356.25 92.50 .422 356.13 92.51 1907.32 162.04 197.60 B and C (ii.o) 1907.312 222?9 66"99 .348 223.3 67.32 1908.40 356.34 92-47 B and C 1908.422 69^43 86': 10 .482 69.43 86.00 1907.33 223.1 67.15 We have for AB : 1886.88 i62?so I97"45 2n Eng 1893.86 162.50 197.26 2n Eng 1907.32 162.04 197.60 3n P It is evident there has been no change, and that the proper motion, whatever it is, is common to both stars. For future use, I have measured a third star. Auwers 0^097 in 235 ?4 Boss 0.084 > n 230.8 1908.45 69.43 86.05 For comparison we have the following measures : AB 1893.98 3546s 117*50 2n Eng 1908.40 351-69 "3-19 3n P AC 1894.01 25.00 i6o.il 2n Eng 1908.40 24.35 156.00 3n p CD 1893.98 356.08 93.14 in Eng 1908.40 356.34 92.47 3" P 67 Burnham: Measures of Proper Motion Stars DM (40) 4373 (7. 7... 10.8) R. A. 20" 53 59' Decl.+4054' 1909.493 3Si?90 168:52 .496 351.90 168.38 512 351-77 168.76 DM (33) 4117 (9. 2... 12. 9) R. A. 20" 55'" 50' Decl. + 33 26' A and B 1910.512 204?o 21:13 .529 203.8 20.75 1909.50 351.86 168.55 .531 203.0 20.82 Very little if any change. 1880. 16 352?o8 167:89 an Bl 1910.52 203.6 20.90 A and C (n.6) 1910.512 6?5 87:16 .529 7-4 87.21 .531 6.8 87.38 Croombridge 3357 (6.5. . .8.0) R. A. 20* 55 20' Decl. + 39 47' A and B 1908.266 2i7?i3 136*88 383 217.40 137-21 .406 217.58 137.13 .422 217.30 137-16 1910.52 6.9 87.25 The proper motion of the DM star is given : Battermann o''3i in I77?7 No other measures. The motion in A is confirmed by com- parison with a brighter star sp. A and DM (33) 4144 (8.9) 1910.52 AR. A. 75! 25 A Decl. 6'/2 p 187? 75.46 18 i A G 1908.37 217.35 137-09 A and C 1908.406 i4522 208:38 .422 144.00 208.26 .425 145.03 208.48 A and DM (33) 4121 (9.1) 1910.51 A R. A. + 65:2 A Decl. is'/9 P 1908.42 145-05 208.37 B and C 1908.406 IO7?O2 211:89 .422 107.03 212.02 .425 107.08 212.60 3 Equulei (5.9.. .12.8) R. A. 20" 5 6 m 17' Decl. + 6 43' 1911.509 251 ?73 80:40 545 251.90 81.14 C and c (10.2.. .10.6) 1908.406 38^62 8:76 .422 39.03 8.62 425 39-45 8.61 1911.54 251.80 80.72 The proper motion derived from the meridian positions is very uncertain : Auwcrs o''oo7 in 27o?o Boss 0.016 in 227.3 1908.42 39.03 8.66 The only other direct measures are of the large stars : 1893.80 2i7?23 132:70 2n Eng Assuming the fixity of the smaller component, the proper motion of Groombridge 3357 is : 0:302 in 408 From meridian observations this is given : Lalande 40848 (8.0... 6. 7) R.A.2o"s8 m 23' Decl. + 45 24' 1908.266 i34?63 165:55 370 134-98 165.55 383 I35.I3 165.72 Stumpe 0:307 in 48?4 Groombridge 0.308 in 47.2 Porter 0.333 in 51.5 It would be generally unsafe to assume that a star of the magnitude of B was fixed, but in this instance from all the data it appears to have no sensible movement. To make this certain hereafter, I have measured a third small star from both A and B. 6 1908.34 134-91 165.61 The larger star, B, is a very close pair (= 1138). In my General Catalogue the proper motion of L 40848 is erroneously given to (J 1138. The meridian positions give the latter no sensible motion. The only direct measures of these stars are the following: 1894.04 J33i5 167:76 2n Eng 1908.34 134-91 165.61 3n p 3 Burnham: Measures of Proper Motion Stars - These measures give for the proper motion of A, assuming e other to be fixed : 07388 in 66?3 From transit observations we have : Stumpe o7376 in 69? 7 Paris 0.401 in 70.9 Porter 0.365 in 68.6 A. G. Bonn 0.375 in 69.7 If the micrometer positions are combined with the relative isitions in the catalogues of Weisse, O. Arg. N., A. G. Bonn d Porter, the most probable movement of A is : 07416 in 72?4 For verification of the real motion, I have measured a very faint star near A. A and a (12.8) 1908.266 67^62 17718 .383 67.80 16.88 .406 68.55 17-09 1908.35 67.99 17-05 Lalande 40844 (8. 6... 10.7) R. A. 20" 59 24' Decl. + 6 37' A and B 1008.441 207?22 105734 444 .460 207.15 207.27 105.40 105.60 1908.45 1908.441 .444 .460 207.21 A and C (9.1) ii925 119-13 119.17 105.45 J97"77 198.45 198.49 1908.45 ii9. i8 198.24 The first measures are : AB 1891.85 204?68 113703 in Eng AC 1891.91 121.53 204.07 2n Eng The four sets of measures give for the annual movement of the principal star : AB R. A. + 07104 Decl. 07557 AC .085 .551 + 0.095 0.554 Therefore the proper motion of Lalande 40844 is : 07563 in 170^3 This has been given : Stumpe o7s6o in I77?9 Porter 0.529 in 178.2 4 Equulei (6. 1. ..12. 5) R. A. 20" 59 30" Decl. + 5 29' 1911.487 509 _l526^ 1911-50 275-50 275-53 275-10 275.38 35?8 S 35-55 35-40 35-60 The proper motion is given : Auwers o7i59 in 2i7?o Boss 0.169 in 217.6 No other measures of the small star. Piazzi XXI. 470 (8 . ... 12 . 9) R. A. 21" i m 22' Decl. 6 3' 1908.444 479 .482 296.03 295.40 1908.47 295.98 42.14 42.00 41.98 No other measures of the small star. The proper motion of A is given: Stumpe 07300 in 45?6 Porter 0.324 in 45.2 DM (10) 4481 (8. 6... 9. 5) R. A. 21" 6 17' Decl. + 10 9' A and B 1908.422 35787 187702 425 444 357-73 357-73 187.07 186.85 1908.43 357-78 186.98 B and C (12.5) 1908.425 3i?45 19746 .444 30.08 19.45 -479 30.10 19-43 1908.45 30.54 19.45 No other measures of C. B is DM (10) 4480. For AB we have: 1892.84 358^62 187734 2n 1908.43 357.78 186.98 3n Eng These positions give for the proper motion of the principal star: o7i75 in 8o?8 From meridian observations: Stumpe Porter 0.200 m 90:0 0.172 in 83.3 (3. 3.. .II .5) R. A. 21* 7 m 50" Decl. + 29 44' A and B 1907.463 2O4?90 69706 -485 .502 204.40 204.00 69.16 68.79 1907.48 204.43 69.00 A and C (11.2) 1907.485 209?53 90735 .502 209.52 00.44 1907.49 299.52 90.40 69 Burnham: Measures of Proper Motion Stars A and D (12.5) I907-3SI 66oo 102775 .465 66.02 102.78 .502 66.05 102.99 1907.44 66.02 102.84 Of these stars only D has been measured before: 1879.40 67?2 101725 2n |1 From the two positions the proper motion of Cygni is : Measures o7o94 in I93?7 Auwers 0.055 in 196.4 Newcomb 0.061 in 182.3 Boss 0.059 >n 182.5 Repeating the measures hereafter of all these stars will give a more accurate proper motion. Lalande 41348 (8. 5... 9.3) R. A. 21* 1 1 50* Decl. o 20' A and B 1908.422 58?is 179757 .425 441 58.30 58.02 179-87 179.16 1908.43 58.16 B and C (12.2) 1908.422 n6?3 .425 "6.7 .441 116.5 179-53 H-99 ti-74 1008.43 116.5 "-9S B is DM ( o) 4196. Meridian positions are found in Lament, Porter and A. G. Nico. The first micrometer position is from a single night, and therefore the correction to the proper motion is perhaps less certain. 1891.85 6o?27 184752 in Eng 1908.43 58.16 179.53 3n P From these positions the proper motion of Lalande 41348 is: 07502 in H2?4 Some of the values from transit observations are given : Stumpe o?464 in m?5 Porter 0.450 in 113.1 A. G. Nico. 0.478 in 116.1 The relation of the components in Lamont for 1853.7 is in- consistent with subsequent observations. There are no other measures of the faint star C. a Cephei (2.8...IO.6) R. A. 21* 15" 42* Decl. + 62 5' A and B 1907.772 Z227 2o676o .788 .807 22.42 22.41 206.89 207.01 1907.79 22.37 206.83 1907.772 .791 B and CD I72?4 172.0 19.98 19.92 1907.78 172.0 C and D (n.i.. .11 1907.788 ioo?8 .791 107.8 -3) 19-87 2767 2-57 1907.79 104.3 2.62 The only earlier measure is : 1879.41 23?45 209722 2n I907-79 22.37 206.83 3n We have for the proper motion of a Cephei: Measures o7i62 in 8l?6 Newcomb 0.164 m 7 2 -7 Auwers 0.150 in 80.4 Groombridge 0.149 in 71.6 Boss 0.160 in 72.1 DM (41) 4134 (8. 2... 9. 5) R. A. 21" 2I" 1 20' Decl. + 41 12' 1909.342 -458 -473 2o6?68 296.48 296.45 80.89 80.89 1909.42 296.54 80.88 B is DM (41) 4133. Probably fixed. 1878.64 2o6?83 8i"45 2n 25 Aquarii (5. 4. ..II. 7) R. A.2i h 33 m 29 t Decl. + 1 42' 1911.644 .663 .698 45?56 45-66 45-30 132736 132.68 132-65 1911.67 45-51 132.56 1909.342 378 .381 Il8?02 118.20 118.00 141 "77 141.76 141.71 Bl No other measures. The proper motion is given : Auwers o7o8s in 2i2?o ' Boss 0.098 in 199.9 DM (37) 4407 (Var...io.4) R.A.2i"38 m i8 < Decl. + 37-28' 118.07 MI.75 1909.37 The principal star is red, and variable 7 m to 9 m. The fol- lowing measure is corrected for an error of 180 in the pos tion-angle: 1878.65 ii8?os 140786 2n BI 70 Burnham: Measures of Proper Motion Stars Oxford (Z 26) 74272 (10.2) R. A. 21" 39 m 3o:34 Decl. + 26 56' 7"4 This is DM (26) 4251 (9.3). The place for 1900 is from a plate taken 1907.77 for the Oxford Astrographic Catalogue. The photographic positions give for the proper motion : A and B (9.4.. .10.3) 1910.375 i8?73 I24?47 .397 18.67 124.65 .436 18.67 124.84 1910.40 18.69 124.65 A and DM (26) 4256 10.40 A R. A. + 79?oi A Decl. 122*5 127.8 (5 A. G. 1910.40 1875 A. G. 78.30 A and DM (26) 4249 AR. A. 26?8o A Decl. 176^3 27.24 177.1 The proper motion is doubtful at least. A later set of meas- ures of AB will at once show what the fact is. The last com- parison star is A 299. This Oxford (Z 26) 74061 (8.4) R. A.2i 6 39 m 38:os Decl. + 26 3' 32".? This star is DM (25) 4607 (8.2). Place for 1900 from an Oxford plate taken 1907.77. The photographic positions give i proper motion : of 1 99 in S9?4 A and B (8. 2... 12. 9) 1910.436 3i98o 30?o8 455 318.18 30.85 1910.44 1875 1910.44 1875 1910.44 1875 1910.44 318.99 30.91 A and DM (25) 4602 (9.2) A R. A. 40! i A Decl. 85'! 5 39-6 81.3 A and DM (25) 4604 (9.3) AR. A. 29:4 A Decl. + 148*4 28.6 151.1 DM (25) 4602 and 4604 2n 32:15 32.6 275-43 275-8 A. G. A. G. P A. G. DM (49) 3673 (9.i...n.i) R. A.2i h 5o m 48' Decl. + 49 56' 1909-342 258?02 83^80 515 257.93 84.16 531 258.05 84.38 1909.46 258.00 84.11 The larger star is red. The prior measures disagree in dis- tance, but probably unchanged. 1876.94 25 8?32 8 4 "5S in Bl 1879-45 257.90 83.28 in Bl Lalande 42883 (7. 4. ..13. 8) R. A. 21* 53 22' Decl. + 29 15' 1909.458 -512 SIS 133.35 I33.70 134.10 29-94 29-43 29.92 1909.49 133.72 29.76 No other measures. The principal star has a large proper motion : Stumpe o"57O in 224?2 Porter 0.559 in 225.9 Paris 0.549 in 223.0 16 Cephei (5.2...I2.O) R. A. 21" 57 32" Decl. + 72 37' 1910.551 I7478 I34"i2 .589 174.02 I34-40 605 173.99 I34.40 1910.58 174.20 134-31 No other measures. For the proper motion we have : Auwers o!'i87 in 20o?8 Boss 0.173 in 202.7 a Aquarii (3.0.. .I2.o) R. A. 2 1" 59" 1 37 ' 1907.463 .482 .523 Decl. o 54' 4i?25 ii2"8o 41.90 113-32 41.22 113-04 1907.49 41.46 113.05 The proper motion of a Aquarii is very small, and altogether uncertain so far as the meridian observations are concerned. From the leading authorities we have : Auwers (F. C.) o''oi2 in 279?$ Auwers (A. N.) 0.008 in 248.2 Newcomb 0.014 in 98.3 Boss 0.015 in 114.0 The only measures of the small star are : 1879.50 4i?5 114^64 2n fj' 1907.49 41.46 113.05 3n It seems certain that the motion of the large star is in the first quadrant, and nearly in the direction of the faint com- panion ; and that the values from star catalogues are incorrect. A continuation of these measures will finally give the exact motion. The two positions now available give the proper motion : 0^057 in 44?s I Pegasi (3.8. . .11.2) R. A. 22" i m 26' Decl. + 24 46' 1907.312 463 .482 485 220:52 220.40 220.55 219-95 103.53 103.94 103.67 103.73 1907.43 220.35 103.71 Burnham: Measures of Proper Motion Stars The measures cover a period of more than half a century. 1852.80 2I3?23 92"io an OS 1861.65 214.85 94-19 m O2 1883.82 217.85 98.35 m H2 1907.43 220.35 103.71 4n P The corrected proper motion of i Pegasi is therefore : 07304 in 83?4 From meridian observations : Auwcrs 0*284 in 85 8 Newcomb 0.303 in 86.3 Boss 0.300 in 86.6 DM (49) 3746 (6. 9... 13. 3) R. A. 22" 3" 37' DecL + 49 13' 1910.490 509 .512 272?95 272.60 272.85 27*52 27.61 27.48 1910.50 272.80 27.54 No other measures. No proper motion found in the star catalogues. Bradley 2926 (5. 4... 10.5) R. A. 22" 7" 29' Decl. + 56 14' 1907.312 3433 74*81 .329 34-75 75.40 .348 34-50 74-94 444 34-22 74-93 1907.36 34-45 75.02 Eng Eng For the proper motion we have : 1887.91 36?47 80^26 2n 1894-91 35-85 78.91 2n 1907-36 34-45 75-02 4n P From which the proper motion of the principal star is: Measures 0*296 in 63?o Auwers 0.269 in 61.8 Boss 0.270 in 62.0 i cp/i; (4. 5... 9. 6) R. A. 22' 10 38' Dccl. + 56 27' From a mean of the first two, compared with the last, have for the proper motion of E Cephei: . 0^467 in 82?4 From meridian positions: Auwers 0*451 in 86? i Boss 0.452 in 84.4 Porter 0.438 in 84.9 35 Pegasi (5.0. ..10.5) R.A.22*2i m 47' Decl. + 4 6' A and B 1907.444 2io?io o8"o9 we .502 523 210.77 209.68 98.37 98.79 1907-49 210.18 98.42 A and C (10.4) 1907.444 .502 523 241 45 241.55 241.68 181:03 181.25 181.39 1907.49 241.56 181.22 B and C 1907.444 .502 .523 269? 13 269.68 269.18 109*25 109.49 109.77 1907.49 269.33 109.51 We have the following measures : AB AC From these positions the annual movement of the large st 1886.70 207^62 IO2"7I 2n Eng 1894.85 209.10 100.71 3n Eng 1907.49 210.18 98.42 .in P 1886.70 239.62 182.72 in Eng 1894.84 240.53 181.32 2n Eng 1907.49 241.56 181.22 3n P is: AB AC R. A. + o"ooo .082 Decl. 0*285 293 1907.329 -348 -351 17-63 17.32 129720 129.12 129.20 1907-34 17.60 129.17 The small star is DM (56) 2744, and its place is given in A. G. The only direct measures are: 1887.91 21! 13 133*29 2n Eng 1894.91 19-72 132.00 2n Eng 907-34 i7-6o 129.17 3n P + 0.086 0.289 The proper motion of 35 Pegasi is therefore : 0*302 in 163 ?4 From meridian positions : o''3o6 in 169^3 0.316 in 168.8 0.325 in 166.4 Auwers Porter BOM Groombridge 3804 (6. 5. ..II. 5) R. A. 22" 27 8' Decl. + 39 10' A and B I9II-373 34522 32*92 -392 -395 1911.39 345-40 344-85 345 -iG 32.91 32.61 32-81 Burnham: Measures of Proper Motion Stars A and C (11.2) 19II-373 IS6?97 4376i .392 158.04 43.91 395 157-37 43-62 Lalande 44708 (8.0... 9. 5) R. A. 22" 45 26' Decl. + 13 20' A and B 1908.460 3377o 198794 479 337-95 198.77 .556 337-74 199-08 I9II-39 I57-46 43-71 No other measures. The proper motion of the large star is small : Groombridge o7oi7 in I25?5 Boss 0.020 in 117.3 DM (53) 2911 (9. 6. ..12. 8) R. A. 22" 27 47' Decl. + 53 W A and B 1912.427 209?6 22795 .430 209.7 22.60 .465 209.5 23.25 1908.49 337-So 198.93 B and C (n.o) 1908.460 193 17 106752 479 193-37 106.45 .556 193.50 107.18 1008.48 193.35 106.72 B is DM (13) 5005. For comparison we have the following measures of AB: 1853.68 3433i 2oo"s6 2n O2 1865.91 342.08 200.18 in O2 1883.73 340.22 199.59 in H2 1891.80 339-25 199-67 2n Eng 1908.49 337-So 198-93 3n f5 Therefore the proper motion of Lalande 44708 is : 07357 in 66o The value heretofore given from meridian observations appears to be too large : Stumpe 07414 in s8?2 Porter 0.444 in 58.8 Boss 0.474 in 63.2 I have measured a third star to make it certain hereafter that B has no motion. 60 Pegati (6.4.. .8.7) R. A. 23" 6 m o' Decl. + 26 12' 1909.381 294?so 231709 .496 294.30 231.88 .512 294.33 231.13 1912.44 209.6 22.93 A and C (10.7) 1912.427 I94?23 48749 .430 194.80 48.45 .465 194.81 48.91 1912.44 194.61 48.62 From a comparison of photographic plates, Belanowsky (Mitteilutigen, Pulkowa V) gives A a large proper motion : 1723 in 83?! I have, therefore, measured the nearest two stars, the larger of which should be on the photograph. A measure of that on the plate will at once settle the question of proper motion. The nearest catalogue star, DM (52) 3236, which is about 7' s of the proper motion star, has a small companion not pre- viously measured : A and B (8.8. . .12.8) 1912.408 i8i?i i67oi .427 181.6 16.02 1909.46 294.38 231.47 The prior measures are: I853-77 292? 10 238743 2n O2 1874.82 292.97 235.97 m O2 From these positions the corrected proper motion of 60 Pegasi is : This has been given from meridian observations: Auwers 07225 in 242^2 Porter 0.236 in 240.6 Paris 0.207 in 239.6 Boss 0.229 in 237.8 As a further check on this movement, I have measured a much fainter star: A and a (11.3) 1909.496 240? 20 86748 .515 240.70 86. 81 .531 240.60 86.77 1912.41 181.3 16.01 DM (64) 1713 (7. 3... 9.2) R. A. 22* 41 46' Decl. + 64 40' 1909.438 240^07 146761 473 239.88 146.61 .496 240.26 146.84 1909.47 240.07 146.69 The smaller star is DM (64) 1711. One of these stars, and presumably the larger, may have a small proper motion. 1878 240?2 14579 A. G. Hels. 1879.15 239.77 145-01 2n Bl Groombridge o7o8r in 87?2 1909.51 240.50 86.69 73 BiiniJiam: Measures of Proper Motion Stars Bradley 3077 (S-T-.-P-S) R. A. 23* 7- 29' Decl. + 56 30' 1907.293 .329 351 206? S7 206.37 206.30 104-35 104.80 104.84 1907-3-' 206.41 104.66 The proper motion of the large star is : Measures o"o83 in ioo?i Auwers 0.130 in 121.9 Boss 0.139 in 124.1 The difference is probably due to errors of observation; it is not likely that the small star has any motion. This will appear hereafter from a re-measurement of the third star. The measures are ample in point of time: 1852.74 I3953 1853.10 140.22 1868.80 157-88 1882.76 177.12 1884.16 179. 10 1887.91 183.88 1907.32 206.41 101.93 89.70 87.36 87.34 88.35 104.66 The corrected proper motion of the principal star is : in in in in in 2n O2 O2 O2 O2 H2 Eng P DM (60) 2532 (8. 4... 10.9) R. A. 23" i8 m 56' Decl. + 60 56' A and B 1909.378 l67?07 44748 Measures 27093 in 82?2 Auwers 2.094 in 82.2 Boss 2.102 in 81.9 Newcomb 2.109 ' n 81.9 Bradley 3084 (5. 4... 12. 7) R. A. 23' 1 1" 14' Decl. + 52 33' 1909.742 319^22 123777 744 319-27 124.16 .760 318.92 124.09 .438 493 167.23 166.90 44-36 44-39 I oo, ).. u 167.07 44-41 A and C(io.8) 1909.378 438 493 35438 354-33 354-27 8or88 80.97 80.66 1909.44 354-33 80.84 A and D (10.5) 1909.378 438 493 64?37 64.05 64.10 130737 130.51 130.54 1909.44 64.17 130.47 I 1909.75 319.14 124.01 No earlier measures. The proper motion of Bradley 3084 is given : Auwers 07291 in i6i?5 Groombridge 0.275 >n 155.5 A. G. Harv. 0.252 in 160.1 Boss 0.270 in 154.5 \2Andromtdae (6.O. . .8.7) R. A. 23" 15" 6' Decl. + 37 32' A and B 1907- 7<*) 255?62 120:43 772 255.70 120.44 788 255.83 120.50 A is the principal star of h 2238 (M 52). The first measures are somewhat discordant, especially in distance. Probably there is no change. AB 1876.56 1880.02 166.20 44"6 7 43.83 in in Bl Bl AC 1876.56 1880.02 354.38 79-44 81.24 in in Bl Bl AD 1876.56 1880.02 64-55 64.50 131.12 130.58 in in Bl Bl 1907.77 1907.788 791 255.72 B and C (12.0) 213-93 120.46 155.83 1907.79 213.91 We have the following measures : 1886.96 255?6s i 18777 1894.93 255.72 119-25 1907-77 255.72 120.46 155.83 2n 2n 3n Oxford (Z 26) 78862 (8.6) R. A. 23" 23 i6!7i Decl. + 25 22' 4079 This star is DM (25) 4940 (8.7). The place for 1900 is from the Oxford Astrographic Catalogue, plate taken 1907.77. The proper motion is given : 07148 in 42?o A and B (12.9) 1910.452 2829 39:90 .455 284.0 39-49 1910.45 283.5 39.69 A and C (13.0) 1910.452 257?2 53752 455 257.1 53.34 Eng Eng P 1910.45 1875 1910.45 257.1 53.43 A and DM (25) 4944 (8.8) A R. A. + 57? 8 A Decl. 142:0 58.3 142.8 P A. G. 74 Burnham: Measures of Proper Motion Stars X Andromedae (4.0... 10.5) R. A. 23" 3 i m 42" Decl. + 45 48' A and B 1908.425 89?03 217*64 .444 88.75 218.23 .460 88.87 217.60 i Piscium (4. 3... 13) R. A. 23" 33 48' Decl. + 4 59' 1909.570 294?3o 7o''o8 .592 294.77 69.70 .627 294.35 69.88 1909.60 294.47 69.89 The only other measure is: 1879.56 288?o 54''o 2n f?" These positions give for the corrected proper motion of i Piscium: o''577 in I35-O This has been found from meridian observations : Auwers o''s6i in I4i?2 Newcomb 0.570 in 139.9 Boss 0.574 in 139.8 Piazzi XXIII. 164 (7.0. . .9.5) R. A. 23" 37 m 24' Decl. + 57 24' A and B 1907.810 2i2?8i 99''i4 .845 212.75 99-46 .865 212.75 99-33 1908.44 88.88 217.62 A and a (i3-3) 1908.425 I98?72 47^74 .444 198.80 47.45 .460 199.18 47.44 1908.44 198.90 47.54 Band b (11.5) 1908.425 i5795 68"49 .444 157-90 68.31 .460 157.93 68.63 1908.44 157.93 68.48 The small stars have not been measured before. For AB we have: 1868.77 93i8 222^29 in O2 1882.76 91.91 220.24 in O2 1908.44 88.88 217.62 3n |3 The proper motion of the large star is: Measures o"455 in 165^6 Stumpe 0.455 in 158.8 Auwers 0.454 in 161.2 Newcomb 0.451 in 158.6 Boss 0.449 in 159-7 74 Pegasi (6.0... 10.5) R. A. 23" 32'" 35' Decl. + 16 10' A and B 1907.485 34?77 98" 18 523 35-05 98-32 540 35-03 98.08 1907.84 212.77 99-31 A and C (9.5) 1907.810 138^33 ii6:'7o .845 138.10 117.28 .865 I37-7S "6.88 1907.84 138.06 "6.95 A and D (9.2) 1907.810 189^70 164792 845 189-73 165-34 .865 189.63 165.53 1907.84 189.69 165.26 A and E (9.5) 1907.810 I23?i6 158:71 .845 123-23 I59-4I .865 122.90 159.18 1907.52 34.95 98.19 B and C (12.0) 1907.485 238?6 25^68 523 238.9 25.78 540 239.3 25.65 1007.84 123.10 I59-IO A and F (9.0) 1907.810 I9i?oo 2i8?8i .845 100.85 219.13 .865 190.88 218.91 1907.52 238.9 25.70 No other measures of the faint star C. Of the other we have: 1887.00 36o7 loo? 14 2n Eng 1894.91 35.52 99.70 2n Eng 1907-52 34-95 98.19 3n From these positions the proper motion of 74 Pegasi is : Measures o"i28 in 78^6 Auwers 0.112 in 96.2 Boss 0.120 in 90.9 1907.84 190.91 218.95 The prior measures are : AB 1894.18 2i2?so 9i"so 2n Eng AC 1894.20 134.20 "5.56 2n Eng AD 1894.18 188.52 158.33 2n Eng AE 1894.20 120.37 160.51 2n Eng AF 1894.15 190.07 211.57 2n Eng 75 Burnham: Measures of Proper Motion Stars The motion of the large star is : AB R. A. + 0^336 Decl. AC AD AE AF .343 .319 .382 .326 .471 .463 .421 341 .463 Therefore the true proper motion is : o?575 in 36?4 This is given from transit observations : Stumpe or6o8 in 3p A. G. Hels. 0.618 in 40. Porter 0.605 >n 36. ([< Andromedae (5.0. ..14. 5) R. A. 23" 40 6' Decl. + 45 45' A and B 1908.479 2i8?7 24^73 .518 218. i 24.80 1908.50 218.4 24.76 A and C (13.0) 1908.479 I7?2 6i'/79 .518 17.2 62.19 537 17-2 62.05 1908.51 17.2 62.01 A and D (9.0) 1908.444 i5i7S i84"i8 .460 151.30 184.21 479 151.83 183.81 1908.46 151.63 184.07 B and C have not been previously seen. D is DM (45) 4322. For the relation of this to the principal star we have: 1874.8 i SI ?8 184^53 A. G. Bonn 1879.79 151.89 183.23 2n Bl 1894.70 151.90 184.06 2n Donncr The position of 1894 is from astrographic plates. As the proper motion of the large star is practically zero, there is no material relative change. . Auwers 0^017 in i6i?9 Boss 0.022 in 145.1 PART II 1EASURES OF PROPER MOTION STARS IN THE GENERAL CATALOGUE OF DOUBLE STARS 0G. C. 7. P 1014. (7.0... 12. 5) R. A.o h i'"24' Decl. + 3io' 1908.583 .671 3357 334-3 i''47 1.58 1908.63 335-0 1-52 These measures show that there has been no change since 1891. Some of the early measures have large errors in the osition-angle. The proper motion, if any, is very small. 15. O2(App.)2 S 6. (7.0... 7. i) R. A. o" i 1 " 51" Decl. + 30 43' 1907.695 .711 7H iiS.86 "5-44 105-03 104.87 1907.71 115.72 104.99 1912.619 .622 .638 "57o 115.60 115.80 105:36 105.24 105.32 1912.62 115.70 105.31 four sets of measures by A, Franz and (3 (1876-1912) give for the apparent motion of B : o"o82 in 76^5 As these stars arc of about the same magnitude, the proper motion may be in either or both. I have, therefore, measured the nearest third star : A and a (13.6) 1912.622 260?! 2o"ii .638 259.0 20.20 1912.63 259.5 20.15 19. a. Andromedae. 2i3, App. II (2.0... 11.2) R. A. o" 2'" 1 1 " Decl. + 28 26' 1911.471 27572 75"i7 .509 275.90 75-34 .529 275-75 75-44 -545 276.10 75-39 1911.51 275.87 75-33 These measures will not sensibly change the value given in the General Catalogue for the proper motion of a Andromedae from the positions 1836 to 1903. Measures ol'igS in 140^3 Auwers 0.200 in 141.2 Newcomb 0.216 in 140.6 Boss 0.213 in 139.1 24. P Cassiopeiae. A. G. C. 15. (2. 2... 13. 7) R. A. o" 2 m 43 s Decl. + 58 29' 1910.666 .678 .681 220? I 217.5 218.8 1910.67 218.8 23-74 23-82 ^3.48 ^3768 A continuation of the measures of the small star will give an independent and better value of the proper motion of the bright star than that derived from meridian positions. With the time interval of 1889-1910 we have: Measures 0^564 in 109?! Auwers 0.550 in 110.2 Boss 0.558 in 108.9 Newcomb 0.560 in 108.8 32. O. Stone I R. A.o"3 m 28" Decl. 14 5i' There is an error in the Cincinnati place of this star. It is identical with 2 3065 rej (No. 14). All the measures cited in G. C. Part II belong to ~Z 3065 rej. 36. H 1939. (7-..io) R. A. o h 34i' Decl. + IO 45' 1909.802 .936 161.1 34"8o 34.65 1909.87 161.3 34-72 As the first position of these stars depends upon a single night, the apparent change in distance may not be real. 77 Burnham: Measures of Proper Motion Stars 50. Hdz. (7. 5..- 12) R. A. o" 5 6' Decl. + 7 17' 1907.540 H7?9 I4?75 .673 120.4 14.81 675 "9-3 15-06 No other measures, h 8 is 2 m 50" / H 1941, with nearly the same declination. It has a lo.im star in the center like the planetary nebulae. Its place is found from the following stars : h 8 and star 10.4111 1910.529 238?53 60" 54 .570 238.33 60.23 .586 238.42 60.10 1907.63 119.2 14. S- 1909.742 ng?i 14^91 .780 119.9 15-19 .782 118.8 15.05 1910.56 238.43 60.29 A 8 and DM (71) 6 1910.529 I94?oo 214:05 .570 195-43 213.59 .586 195.23 213.88 1909.77 119.3 15-05 It appears now that change is not probable. All the other measures are given in Part II of the General Catalogue. 51. Espin 40. (8.8. ..12.3) R.A.o's-V Decl. + 51 24' A and B 1907.695 73 ?4 4^56 731 73-7 4-82 .750 71-2 4-46 1910.56 195-19 213-84 h 8 and DM (71) 8 1910.529 6i?io 23o'.'43 .570 61.28 230.57 .586 60.85 230.29 1910.56 61.08 230.43 The only prior position is : 1886.68 6i?2 229^83 Kobold 71. O2(App.)i. (6. 4... 7.0) R. A. o" 7 22' Decl. + 75 22' 1909.742 I02?8s 76^04 .744 102.73 76.38 .760 102.60 76.46 .763 102.52 76.39 I907-73 72-8 4-61 A and C (9.5) 1907-695 3i75 24^85 731 316.9 24.55 750 316.9 24.80 1907-73 3I7.I 24.73 Disagrees with prior measures of AC. The position from the Attrographic Catalogue is practically identical with the measures in 1907: 1902.80 316^5 24:60 Catania 55. 2S. (7. 2... 8. 8) R. A. o" s m 25' Decl. 3 45' 1910.666 29i?9 7774 .681 292.3 7.75 .684 293.9 7.56 '909-75 102.68 76.32 There may be a little proper motion in one. 1842 I03?3 78^1 O. Arg. N. 1875 102.9 77-3 A. G. Kasan. I875-79 102.4 77-07 3n A 1882.83 102.4 76-87 5n Franz No proper motion found in the star catalogues. 99. H 1047. (7. 3... 10. 5) R. A. o" J0 m 3' Decl. + 42 58' 1910.666 75?6 9Toi .678 77.6 8.00 .681 74-0 9-15 1910.68 292.7 7.68 No change since 1831. 57. H 1941. (n.o. . .11.2) R. A. 0*5-31' Decl. + 71 51' 1910.529 I93?2 I2?32 .570 106. I 12.25 586 193.7 12.23 1910.67 75.7 9.02 A small common proper motion. All the earlier measures are given in G. C. Part II. The proper motion of the principal star (Groombridge 30) is given : Groombridge 0^087 in Il6?7 1910.56 194.3 12-27 78 Burnham: Measures of Proper Motion Stars 113. Hdio. (10.7. ..ii. 3) R. A. o"ii m Decl. + 3 4' 1908.652 -6SS .709 2374 239.0 238.8 31-52 30.97 31.21 1908.67 238.4 31-23 The note in the General Catalogue as to this pair following a 7.5m star, belongs to Hd 13 (No. 124) as given in Part I. The distance of Hd 10 in the measure of 1903 is much too large. 116. 3&Piscium. R. A.o"ii m 13 s 22. (7.0... 8.0) Decl. + 8 12' A and C (12.5) 1910.684 I4i?82 63^51 .701 142.20 63.75 .703 141.88 63.86 1910.70 141-97 63.71 "or proper motion of AB. Other values from meridian ositions are: Auwers o"io9 in 2o?o Boss 0.120 in 44.9 Hedrick 0.074 in 102.1 118. 223. (7. 6... 9. 9) R. A. o" n m 20 s Decl. o 21' ipii.545 .564 .583 A and B 329?! 328.6 329-3 4"7i 4-58 4.86 1911.56 329.0 4.72 This, with the prior measures (1836-1911), gives for the iroper motion of the principal star : o"i2i in 15?! The movement from meridian positions is : A. G. Nico. o"ii2 in o For a further independent value, I have connected a faint ar: A and C (n.6) 1911.545 28i?40 I03':i8 .564 281.30 102.95 .583 281.30 103.25 1911.56 281.33 103-13 119. Hd ii. (9. 8. ..10. 7) R. A. o" i i ra 39' Decl. + 3 5' 1908.633 .636 .652 290^5 291.4 291.0 36.34 36.60 1908.64 291.0 36.45 It was obvious that one or the other of the prior single measures given in G. C. Part II of this star must be wrong The distance in the measure of 1903 is about i" too large. 136. H 1951. (8.0... 12.0) R. A. o" 12 41* Decl. ii 37' 1908.633 .652 .655 218=4 217.7 216.5 22'.'87 22.98 22.95 1908.65 217-5 22.93 The only earlier measures are my own, given in G. C. Part II. As the first position depends upon a single night, the apparent change in distance may not be real. 141. i Ceil H 1953. (3. 7. ..12) R. A. o" 13 19' Decl. 9 30' 1910.666 .681 .701 17.08 16.95 1910.68 16.98 63"74 63.02 63.58 63-45 Comparing this with the first position in 1880, we have for the proper motion of i Ceti: 0*072 in 243?8 Other values from meridian positions are : Auwers o"o49 in 237?9 Boss 0.037 in 209.0 Newcomb 0.035 m 212.5 144. 8384- (6. 8... 9. 3) R. A. o" 13"' 44' Decl. + 37 34' 1910.666 .678 .681 19.30 18.83 18.90 7i"39 71.29 1910.67 19.01 71-33 The proper motion of A from the measures of AB, and from the star catalogues is : Measures o"3O9 in 206 i Stumpe 0.332 in 207.0 Porter 0.304 in 211.9 There is no indication or probability that the smaller star has any sensible proper motion, but I have measured a much fainter and nearer star: A and a (13.5) 1910.678 267?o 2o"78 .684 266.5 20.30 .739 267.5 20.73 1910.70 267.0 20.00 158. Hdi 4 . (9- 5... 13- 5) R. A. o" 15 12' Decl. + 7 22' 1907.772 9-703 I57?3 158.6 51.13 51-50 1908.74 158.0 No other measures of these stars. 79 Burnham: Measures of Proper Motion Stars 165. 42 Piscium . 22 7 . (6 8.. .10. 7) 179. Hd 16. (8.5...II.O) R. A. o* i6 m 13 Decl. + 12 49' R. A. o" I7 m 47" Decl. + 3 & 1908.613 332? i 29*05 1910.838 2oo?o8 56*93 .633 333-3 29.23 .856 290.37 56.53 .636 332-0 29.08 893 290.13 57-54 .652 331-9 29.00 1910.86 200.19 57.00 1008.63 332.3 29.09 The apparent change in distance is not confirmed ; but further The six positions on 20 nij [hts by 2, A, HI and 6 (1829-1908) measures should be made ten or twenty years hence. give for the corrected proper motion of 42 Piscium: 0*083 in 46?3 Meridian positions give: Auwers 0*051 in 46?3 Boss 0.063 in 65.5 169. H 1959. (8. 5... 10. 2) R. A. o* i6 m 23' Decl. + 21 o' 1909.630 z86?3 27*40 .687 286.1 27.20 1909.66 286.2 27.30 No other measures. Distant about 50' np H 1959 is h 17, and h 16 is sp that. In the field with the first are several small stars. h 17 and star 10.5 m 1909.630 I54?9 56*44 .649 154.8 57-71 1909.64 IS4.8 57-07 h 17 and star io.6m 1009.630 84 ?o 82*68 .649 80.4 80.54 1909.64 82.2 81.61 h 17 and star 10.6 m 1909.630 I02?o 94" 77 .649 101.7 93.8i 1009.64 ior.8 04.29 The nebula is too diffused for accurate bisection, and h 16 has no good comparison star. The following positions are from differences in R. A. and Decl. : 1887.88 I56?4 53:2 in .88 82.0 76.4 in .88 101.6 90.7 in Eng I''"K Eng 174. Hd 15. (9. 7... 10. 7) R. A. o" 16" 54' Decl. + 7 36' 1907.772 .845 270?! 270.5 25*58 25.56 1907.81 270.3 25.57 There seems to be a large error in the single measure in 1903. 197. O29. (7.0... 10. 2) R. A. o" 19 40' Decl. + 56 7' A and C I9IO.627 4?6 22*52 .644 .666 4-0 3-7 22.55 22.76 1910.65 4.1 22.61 The apparent large change in angle can not be real ; probably error in early measure. 204. Hd 19. (9.6... 13. 2) R. A. o" 20 35' Decl. + 7 3' 1907.772 9-703 326.5 35" 18 34-76 1908.74 326.0 34.97 No other measures. The measure given in G. C. Part II belongs to some other star. 205. 230. (6. 8... 8. 7) R. A. o" 20 43' Decl. + 49 19' A and C (12.7) 1910.818 97?77 63*06 .838 97.75 64.13 .856 97.83 63.81 1910.84 97.78 63.97 For an independent value of the proper motion of A. The measures of AB (1831-1903) give for the motion of the prin- cipal star: 0*054 > n 268?o From meridian positions: Groombridge o"oo6 in 3O?6 The smaller component of "S, 30 may have some motion. 212. 02ior*/. (5. 8... 9. 2) R. A.o h 2i m i6" Decl. + 15 22' A and B I907.731 238? 10 101*47 750 237.92 101.50 .772 237.88 101.55 1907.75 237.97 101.51 80 Burnham: Measures of Proper Motion Stars A and DM (15) 60 1907.750 I5423 275':73 .772 154-27 276.61 1907.76 I54-25 276.17 Bandfc (13. 7) 1907.845 I5764 I53"29 .865 157-20 153.49 1907.85 I57.42 153.39 proper motion in the General Catalogue from A. G. Berlin is given with the wrong sign in R. A., and should read: The corrected proper motion of A from the four sets of measures by A, Doo and (3 (1866-1907) is: o!'i32 in 104^7 It is not probable that B has any motion of its own. For urther certainty the nearest small star is connected with it. 216. H 1968. (8.0...IO.O) R. A.o*2i m 33 s Decl. 17 4' A and B 2^58 1907.675 .692 189?! 188.4 2.57 1907.68 1911.564 -583 .663 188.7 202?6 204.9 2OI.9 2-57 3T87 3-75 3-6o 1911.60 1907-673 .675 .692 203.1 A and C (11.7) 122.70 122.88 3-74 90^69 90.91 90.73 1907.68 122.77 90.78 The proper motion of A from meridian positions is too large. The six sets of measures of the small star by Aitken and p (1891-1907) give: k Measures 0^226 in 88?4 Stumpe 0.252 in 92.1 Porter 0.276 in 85.2 following later position will not materially change the value given : A and C ipio.933 11.564 11-583 11.663 1911.44 I22? 4 7 122.45 123.05 122.71 122.67 oo': 1 1 00.81 90.49 90-19 90.40 228. H623. (10.8... 10. 9) R. A.o"22 m 40 a Decl. + 2 11' A and B 1909.760 342! I9"82 .763 .780 341.8 342.4 19-54 19.30 1909.77 No other measures. 342-1 19-55 H 623 (B) and h 23 1909.760 24?7 46^54 .763 24.5 46.25 .780 24.7 45.80 1909.77 24.6 46.20 There are four other nebulae, h 25 and three by Rosse, closely following. 236. P 1094. (5-7-.- 9-5) R. A. o" 23 29' Decl. + 59 19' A and C (11.5) 1912.638 338?33 Ii9"8s .660 338.34 120.45 .675 337-45 120.63 1912.66 338.04 120.31 No other measures of C. The only proper motion found for the large star is : Boss o"o47 in I36?7 239. 28 Audromedae. f5 1095. (5. 5.. .13. 3) R. A. o" 23 47' Decl. + 29 5' AandC (n.6) 1912.638 i29?57 142^42 .675 129.92 142.44 .678 129.72 142.35 1912.66 129.74 142.40 Faint star measured for the proper motion of the physical system. No other observations. Auwers o"o6r in I59?8 Boss 0.066 in 143.5 242. 12 Ceti. H 322. (6.0... ii. o) R.A.o"23 m 55' Decl. 4 37' 1908.728 .824 .826 1908.79 i88? 4 190.4 190.1 189.6 9^86 9-63 9-75 9-75 81 Burnham: Measures of Proper Motion Stars The proper motion of the large star from meridian positions is small and very uncertain in direction : Auwers o"oio in 2o6?S Boss o.oio in 133.0 Newcomb 0.017 in 9 r -4 The corrected value from the five sets of measures on 15 nights (1866-1908) is: 246. Espinz. (8. 8... 9. 5) R. A.o"24 m 3o' Decl. + 56 8' 1907.750 .788 .791 114:0 114.0 114.0 5 74 5.8o 5-93 1907.78 114.0 5.82 The only other measures are those in Part I of the Genera! Catalogue. 254. P 1158. (6. 9... 8.3) R. A. o" 24 55' Decl. 10 45' A and BC 1912.695 86?83 79^26 .717 755 86.86 86.80 78.73 79.21 1912.72 86.83 79.07 Neither star has any considerable proper motion. 258. H S 45i. (5- 7-.. 8. 5) R. A. o" 25 m 3" Decl. + 32 55' I9H.545 .564 .583 85.60 85-13 55"85 56.21 56.37 1911.56 85.21 56.14 Not given in Boss' General Catalogue. No sensible relative change since 1875. 262. O2i3- (7. 8... 10. 9) R. A. o" 25 26' Decl. + 36 18' A and C (12.5) 1908.843 .845 .862 162.9 164.2 29:09 29.30 29-30 1908.85 163.9 29.23 A and D (10.5) 1908.843 179-3 4>?42 .845 179-0 4I-27 .862 180.5 41-44 1908.85 !/<;.<> 4I-38 The measures of these stars so far show no sensible proper motion in A. This is identical with No. 246 of the General Catalogue. 270. A in. (8. 5... 13.0) R. A. o" 26'" o a Decl. 5 49' A and B 1908.671 2I2?4 .824 .920 208.7 207.6 2:19 1.89 1.90 1908.80 209.6 1.99 These measures show that the small star has the same proper motion as the other. Porter o"38 in 99 For an independent determination of this hereafter, I have measured a distant star io.7m. The faint nebula sp in a low- power field is /i 27. A and C 1908.750 I9537 II2'.'90 .824 195.61 112.89 .826 195.22 113-05 1908.80 195.40 112.95 275. 52 Piscium. H 1982. (5. 5... 12.0) R. A. o" 26 18' Decl. + 19 38' 1907.657 .673 -675 .692 304.0 303.1 303-6 42'. 1 5 42.01 41.86 41.86 1907.67 1911.602 .622 .625 303.6 3035 302.9 303.0 41-97 42^51 42.58 42.82 1911.62 303.1 42.64 From the measures (1870-1911) the proper motion of 52 Piscium is: o'/J49 in 103 ?2 This is given from meridian places: Auwers o''i2i in I09?3 Boss 0.138 in 1 12.0 276. 0I3IO. (7. 3- -.13- O R. A. o" 26 21' Decl. + 22 32' A and C (12.8) 1911.644 297?! i6?39 .663 297.9 16.05 .720 297.7 15-90 1911.67 297.6 82 Burnham: Measures of Proper Motion Stars A and D (9.4) 1911.644 I46?2O g6''i2 .663 146.31 96.44 .720 146.35 96-16 299. Hd 23. (9. 5.. -12) R. A. o" 28 m 28" Decl. + 3 13' 1907.581 133 ?4 35:76 1911.67 146.29 96.24 .636 132.9 36.25 .638 133.0 36.05 From the measures of these faint stars (1903-1911) we have for the motion of A : AC R. A. + o"i4i Decl. + 0*046 AD 0.159 0.066 1907.62 133.1 36.02 1909.760 I32?9 35:80 780 133.3 35-71 -782 133.2 3S-38 + 0.150 +0.056 Therefore the proper motion of the principal star is : o":6o in 69? 5 The values heretofore given are too large : Stumpe o'.'205 in 86?6 Paris 0.235 in 90.0 1909.77 I33-I 35.63 The former measures give a much smaller distance. No other pair found near this. 304. 2 3 8. (8. 3... 8. 7) R.A.o"28 m 4i 9 Decl. + 58 i' 1908.788 I45?o i6':87 .804 145.5 17.00 .826 144.5 16.93 279. 0214. (6. 7... 10.7) R. A. o" 26'" 29' Decl. + 27 37' A and B 1908.81 145.0 16.93 1909.742 144?! i6"98 -744 144-6 16.99 .760 144-7 16.90 1912.583 159?! 8^63 .619 158.6 8.60 .622 159.4 8.61 1909.75 144.5 16.96 Certainly unchanged. 1912.61 159.0 8.61 A and C (12. 6) 1912.619 84?27 59':95 .622 84.60 60. it 314. 13 Ceti. p490. (5- 5-- -6. 2) R. A. o" 29 m 4'- Decl. 4 15' 1912.62 84.43 60.03 No sensible change in AB in the last half-century. No other measures of C. AB and C (12.5) 1908.826 so?2 28^17 .884 51.5 27.92 -939 51.5 28.46 The proper motion of A is too small to be certain from meridian positions. Boss o"oi5 in 65 .j 1908.88 51.1 28.18 1910.608 49?9 27''i6 .627 50.1 27.64 .666 51. i 27.79 .701 50.3 27.36 281. H 1033. (10.3... 10.3) R. A. o" 26 38' Decl. + 62 37' 1910.65 50.3 27.49 1911.720 so?2 27'.'30 -777 49-3 27.23 835 49-6 27.07 870 50.5 27.55 1907.562 222?6 7l'09 .578 224.0 6.81 .581 223.4 6.91 1911.80 49.9 27.38 The ten positions of this very faint star (1877-1911) should 1907.57 223.3 6.94 1910.529 222? i 6'/79 .586 224.1 6.79 exactness : o''4i6 in 95?2 The correction to the former values is small. 1910.56 223.1 6.79 Probably fixed. H 1033 is in h 28; small stars. Auwers o!'397 in 93?o Boss 0.408 in 92.6 Newcomb 0.409 in 92.4 83 Burnham: Measures of Proper Motion Stars 319. A.G.6. (8. 2.. .10.0) R. A. o" 29 16* Decl. + nii' io?7 1906.772 6.813 7.502 7-540 11.4 n. I 60729 60.08 60.85 60.53 1907.16 II. O 60.44 Distance increasing, and evidently a small proper motion in A, the value of which will appear from further measures. 1892.84 io2 58*43 in Leip. 1002.84 10-3 59-44 3n Miller 322. 242. (7-9-.. 8.7) R. A. o" 29 m 38" Decl. + 29 21' A and C (10.8) 1909.742 205765 33768 -744 206.17 33-94 .760 206.28 33-49 .763 205.78 33-72 1909-75 205-97 33-71 1911.622 ao6?23 33"i7 .625 206.73 33-17 .644 206.81 33-17 1911.63 206.59 33.17 In G. C. Part II, direction of the motion of A, for 165^8 read I548. The six positions by O2, Eng, A and (} give for the proper motion of the large star : 0^446 in I54?6 From meridian observations : Porter 07449 'n J59?8 326. Espin . (8. 9. ..10. 5) R. A. o" 28 17' Decl. + 55 56' Identified as DM (55) 109. 1907.463 485 157 I 156.9 87 15 8.25 "",- 17 157-0 8.20 This is identical with No. 297 of the General Catalogue. The correct place is given here. 333. Hd 29. (7. 8... 9. 2) R.A.o*3i" Decl. + i" 26' There is no bright star in or near this place, and nothing found answering the description at Harvard and Kirkwood. 341. Hd 3 i. (7. 6. ..ii. 5) R. A. o" 31 56" Decl. i 10' 1907.636 -675 .810 307.7 307-3 307-1 30.40 30.40 30.40 1907.71 307-4 30.40 Common proper motion? If the principal star has the given proper motion of 07087 in 2 534. the two are moving together. 345. O2(A PP .)5. (6.2... 8.0) R. A. o" 32 4' Decl. + 76 1 3' 1908.709 I4375 i i6768 .711 143-21 116.05 .728 143.33 116-27 1908.72 143-43 116.33 The relative change, if any, is small. No proper motion found in the star catalogues. 346. 245. (7.o...io.o) R. A. o" 32 m 7' Decl. + 46 18' 1911.793 -813 -835 A and B 87?7 86.8 87.2 13-00 13-14 13-34 1911.81 87.2 13.16 The measures by 2, A, A and ft (1829-1911) give for the proper motion of A : 07052 in 275?9 The meridian positions give : Greenwich 07045 in 268^7 A faint star is connected for a further independent value of this movement : A and C (13.0) 1911.813 26i?3o no725 .835 260.70 109.67 .870 261.33 109-44 1911.84 261.11 109.80 349. O2 16. (6. 3... 10. 8) R.A.o h 32 ni 32' Decl. + 48 42' 1907-523 540 .562 22?8 23-3 22.6 13-79 13-59 13-45 1007.54 22.9 I3.6l Some change from proper motion. The proper motion of A (Groombridge 113) is given: Groombridge o7on in if*).7 Boss 0.019 in 133.2 84 Burnham: Measures of Proper Motion Stars 354. 8 Andromedae. f> 491. (3-4--- I2 -5) R. A. o" 3J m 54 Dec!. + 30 12' I907-S23 S40 .578 .692 300.0 299.7 299.1 299-4 28.19 28.25 27.97 1907-58 1910.701 .703 -739 299- S 2999 298.9 301.2 28.17 28^04 28.04 28.01 1910.71 300.0 28.03 The proper motion of 8 Andromedae is: Auwers o'.'i47 in I23?o Boss 0.163 in 121. 8 As it is certain now that the small star is moving with the ither, I have measured a third and much fainter star : A and C (15.2) 1910.742 I09?8 47"SO .760 111.5 47-55 .780 iio.S 47-52 1910.76 1 10.7 47-52 361. a Cassiopeiae. (2.0. ..14. 5) R. A. o" 33 42 s Decl. + 55 53' A and C (i3-5) 1908.785 105?! 38*30 .804 103-9 105.4 38.13 38.39 1908.79 104.8 38.27 A andD (9.5) 1908.655 280^26 64^16 .673 280.22 64.06 .689 280.09 64.23 .692 280.02 64.06 1908.68 280.15 64.13 From the measures of D by OS and [5 on 29 nights, the real proper motion of the large star is : o"o54 in ii6?4 It is specially important that the measures of AC should be continued. The proper motion is given from meridian observations : Auwers o"o4S in I42?2 Newcomb 0.061 in 121.0 Boss 0.060 in 121. 2 362. H 1044. (8.5... 8. 6) R. A. o" 33 44 s Decl. + 43 3' 1907.523 540 .581 3I94 319-0 319.0 21-97 21.88 I907-55 3I9-I 21.86 No change. 378. H 1046. (10.6.. .11. o) R. A. o" 36'" 25' Decl. + 6i8' A and B 1910.605 65?! i6?i3 .608 .627 66.3 67.4 16.17 16.04 1910.61 66.3 16.11 A and C (10.8) 1910.605 .608 .627 334-2 334-2 333-9 52-82 52-86 1910.61 334-1 52-85 H 1046 is in / 52. In G. C. Part II, angle of AC, for 35S?o read 335- 384. 253r3oo 32^72 509 303.50 32.71 .529 302.00 32.76 1911.50 303-13 32-73 No sensible change since 1888. The proper motion of the large star, if any, is very uncertain. Auwers (F. C.) o!'o:6 in I9O?7 Auwers (Cor'd) 0.018 in 146.0 Boss 0.023 in 102.7 Newcomb 0.029 ' n 102.6 397. A.G. 7- (9-7--.II.O) R. A. o" 38" 8 s Decl. + 11 56' 1908.750 .788 .824 317.5 319.0 21^52 21.32 20.91 1908.79 318.3 Early measures disagree in distance. 21.25 400. H 6 This is identical with the last preceding pair, A. G. 7. 401. 0492. (6.0... 12.0) R. A. o" 38 27' Decl. + 54 34' A and B 1909.821 iso?8 2?29 A and C (10.9) 1909.818 .821 838 23.23 23.53 88^30 88.28 88.44 1909.83 23-54 88.34 Distant star measured for proper motion of A, which is given * A. G. Harv. o"o66 in 3i7?3 Boss 0.027 in 250.3 Groombridge 0.020 in 232.8 There is no change in AB. 403. Arg 2. (8.0... 9.0) R.A.o h 38" 1 59' Decl. + 54 20' A and B 1907.463 n8?3 I 3 r38 .465 118.9 13.15 .485 118.8 12.06 1907.47 118.7 13.16 A and C (12.5) 1907.463 93?s 26"2 The measure by Espin of this star is from B. 408. H 7. (IO.O...H.3) R. A. o" 39"' 14' Decl. + 1 1 55' 1908.750 .788 .824 308.4 308.0 21.12 21. 06 20.97 1908.79 308.3 21.05 This is DM (11) 90. Error of 180 in Herschel. No other measures. No. 397, which is np H 7, is a very similar pair in all respects. 415. 21, App. I. (6. 7... 6. 7) R. A. o" 39 58' Decl. + 30 17' 1907.638 -673 .675 51.50 51.76 46^56 46.41 46.58 1907.66 51.64 46.52 The only change since 1834 is a possible decrease in the angle. 417. HV.82. (7. 7... 8.0) R. A. o" 40 38' Decl. + 50 27' A and B 1909.742 76^26 51^27 -744 .760 76.57 76.32 51.44 51-34 I909.75 76.38 5L35 A and C (12.2) 1909.742 280^62 IO4"72 .744 280.53 104.32 .760 280.68 104.75 1909.75 280.61 104.60 Small star measured to determine hereafter whether the proper motion is in A or B. The apparent motion of B from the measures (1875-1909) is: o"oso in ss?2 ( 180) 432. Hd35- (8.7... 9-3) R. A.o b 42 m 28" Decl. 2 25' 1909.627 703 .706 3S.o 35.8 6796 6.96 6.91 1909.68 35.8 6.94 The nebula about 35' distant sf is diffused but brighter in the middle, so that the bisection is fairly exact. 86 Burnham: Measures of Proper Motion Stars h 67 and SD (2) in 1909.627 H38 9"47 .703 113.6 89.41 115.0 89.65 .706 1909.68 114.1 89.51 437. 02(App.)9- (7-0... 7- 7) R. A. o" 43"' 2i s Dec!. + 29 48' A and B 1908.652 2 3 7!o7 97"86 65S .673 237-30 237-45 97-45 97.51 1908.66 237.27 97.61 : measures of A and P in 1901 give the relative motion of . as in Part II of the General Catalogue: o"2i7 in 92?! 1908.652 .655 .673 A and C 323o8 323.37 323-50 I07"39 107-33 107.33 1908.66 323-32 s only other measure of AC is : 1892.03 324^52 105770 107.35 Eng. Assuming C to be fixed, as it probably is, the proper motion of A from the two positions is : o"i67 in 90?5 To determine this hereafter, I have measured a small star from C : C and c (9.6.. .11.1) 1908.652 2i8?8 I9!'5o .655 220.1 19-74 .673 220.0 19-73 1908.66 219.6 19.66 The meridian values appear to be too large : Stumpe 0^322 in ios?3 Porter 0.263 in 100.3 Rechenberg 0.267 in 103.7 444. 26 3 . (8.2. ..ii. 2) R. A. o" 43 56' Decl. + 11 11' A and B 1907.879 23i?S7 18770 7.961 8.000 231.68 231.60 18.49 18.51 231.62 18.57 1907.95 From the measures of AB the principal star has a prope motion of : o7i62 in 87?7 B and C (n.6) 1007.879 3i373 124*71 7.961 314-30 124.37 8.000 313-70 124.13 1907.95 313-91 124.40 The third star C is connected for the purpose of determining hereafter whether any of the proper motion of the system is n the small star B. The later measures indicate no change in BC: 1912.545 3i383 124732 .562 314-08 124.42 .619 3I3.73 124.79 1912.57 313.88 124.51 453. H 628. R. A. o" 45 m 25' (7- 7-. .ii-S) Decl. + 33 14' 1911.777 .813 .832 68? 9 3 68.95 69.18 4276i 42.56 42.36 1911.81 69.02 42.51 The only other measures are recent, and show no change. 458. p 497. (6.0... 9.0) R. A. o" 45 55' Decl. + 6o e A and B 1908.652 I7o?68 .655 170.93 .673 171.12 .689 171.06 126768 126.86 127.20 127.20 1908.67 170.95 126.98 The six positions by Eng. and (3 give for the proper motion of the large star (Bradley 90) : o7i8i in 340?5 Other values from meridian observations are : Auwers 07152 in 328? 9 Porter 0.175 in 331.2 Boss 0.188 in 337.5 467. 270. (7.0...IO.O) R. A. o" 46 m 52 s Decl. + 52 2' A and C 1909.742 I48?55 78^95 744 .760 148.77 148.52 78.74 78.83 1009.75 148.61 78.84 87 Burnham: Measures of Proper Motion Stars C and c (10.6. . .11.0) 1909.742 88?9 744 1909.74 I-S2 No other measures of these stars. No change in AB. The proper motion of A is given : Greenwich o"o8i in 105^7 475. u' Cassiopeiae. P 1098. (6.0... 14.0) R. A. o" 47 53" Decl. + 58 19' A and C(i2.8) 1912.504 507 545 127.60 127.78 93"69 93-54 93-54 1912.52 127.84 93-59 The amount of the movement of the large star is uncertain Auwers o"io6 in 22i?2 Boss 0.053 in 214.1 Groomhridge 0.061 in 227.4 479. 66 Piscium. OS 20. (5. 9... 7.0) R. A. o h 48 14' Dec). + 18 32' AB and C(i2.8) 1912.562 9?72 150748 619 9-53 151-05 9-64 151.13 .622 1912.60 9-63 150-89 For the proper motion of the binary system. This is un- certain from the star catalogues. Auwers 0^017 in 246?o Boss 0.026 in 119.8 486. H629. (8. 8... n. 3) R.A.o*48 m 59' Decl. + 33 54' A and B 1907.638 70! 7 10^58 .673 71.4 11.02 .675 69.5 10.78 1907.66 70.5 10.79 A and C (8.7) 1907.638 254^78 70^41 .673 254.50 70.61 .675 254.40 70.58 1007.66 254.56 70.53 H2's angle of AC requires a correction of 180. 488. Y Cassiopeiae. P 1028. (2.o...ii.o) R. A. o" 49 28" Decl. + 60 4' A and C (13.0) 1911.663 347-88 52731 701 347-43 52.22 .720 347-85 52.44 1911.69 347-72 52.32 From the six positions on 17 n by A, Doo, and P (1879- 1911) the corrected proper motion of y Cassiopeiae is: 07026 in 97?8 The results from meridian observations cover a wide range in direction : Auwers Rad(i8oo) Newcomb Boss 0:027 in 0.018 in 0.027 in 0.030 in 134-3 147.1 100.9 93-8 489. P 1099. (6. i... 6. 8) R. A. o" 49- 34' Decl. + 59 43' AB and (13.5) 1910.605 I5568 41720 .608 154-30 41.40 627 155-83 41-46 1910.61 155-27 The close pair is in rapid motion. Third star for proper motion; this from meridian positions is: Groombridge 07031 in IO5O Boss 0.026 in 90.0 497. u Andromcdae. H 1057. (3. 9... 13.0) R. A. o* 50 6' Decl. + 37 51' A and C (11.5) 1909.818 I22?oo 36^46 .820 -838 122.90 123-90 36.07 36.10 1909-83 123.23 36.21 A and B (13.0) 1909.838 309?io 40767 10.627 309.38 40.71 10.666 309-73 40.65 1910.38 309-40 40.68 From the measures of C, the brightest of the companions, we have for the proper motion of fi Andromedae: 07149 in 57?8 The measures of both should be continued in this interest. Other values from the catalogues are : Auwers (Brad.) 0^176 in 73?8 Newcomb (F. C.) 0.158 in 79.1 Boss 0.154 in 79-9 Burnham: Measures of Proper Motion Stars 519. 2 80. (7. 8... 8. 2) R. A. o" S3" 1 15" Dec!. + o 8' A and B 1907.961 32o4 2i".74 8.000 320.1 21-75 539. Ho 493. (6. 5... 12. 5) R.A.o h s6 m 4" Decl. + 27 6' 1908.845 I9?4 33"6o .862 18.2 33.80 1908.85 18.8 33.70 Agrees in distance with my former measures. No proper motion found for the large star in the catalogues examined. 542. 39 Andromedae. H 1064. (6.1. ..12. 4) R. A. o" 56 10' Decl. + 40 42' 1909.802 3?6s 20^30 .818 5.50 20.65 .821 4.10 20.23 1907.98 320.2 21.74 B and C (10.0) 1907.845 258? 10 i77"88 .865 258.02 177.98 .961 258.15 178.24 1907.89 258.09 178.03 The proper motion of A from meridian positions is given : Glasgow 0^193 in 229?6 A. G. Nico. 0.127 in 225.0 The measure of B gives a much smaller value : o"ioo in I95?o The third star is connected for the detection of any proper otion in B. 526. 2 81 rej. (7. 5... 10.3) R. A. o" 53 56' Decl. 2 40' 1911.835 67?6 17^59 .870 68.3 17.49 .931 67.1 17.61 1909.81 4.42 20.39 The only other measures are of recent date. The proper motion of the large star is given : Auwers 0*046 in 259?9 Boss 0.024 m 245.1 545. ^83 rej. (8.o...ii.o) R. A. o" 56 30" Decl. + 49 4' 1908.559 3I2?6 21^97 573 3U.6 21.89 597 312.9 21.90 1911.88 67.7 17.56 The only other measures are recent. 528 282. (8. 3... 9-3) R. A. o" 54 26* Decl. + 8 50' A and C (10.0) 1908.843 2i 4 ?37 7 4 "55 .845 214.00 74.64 .884 213.25 74.99 .920 214.03 74.60 1908.58 313.0 21.92 The prior measures are of late date. 553. 26 Cell. S 84. (6.6. . .9.0) R. A. o" 57"' 38' Decl. + o 43' A and C (13.2) 1009.838 2ao?83 I07"37 .936 290.65 106.96 .953 289.89 107.38 1908.87 213.91 74.69 C and D (ii.o) 1008.843 ip6?9 io"86 .884 195.9 11.07 .920 197.9 10.87 1909.91 290.46 107.24 Distant star measured for an independent value of the common proper motion of AB. This is given : Auwers o!'iO2 in 109^0 Boss 0.123 in 106.0 Porter 0.114 in 106.3 556. ^ 85 rej. (8. 2... 10. 2) R. A. o" 58 20" Decl. 5 57' A and B 1910.720 I594 29^26 .760 159.8 29.21 777 158.9 29.21 1908.88 196.9 10.93 There is error in the angles given in G. C. Part I of 180 i the first, and 90 in the other. No apparent change in either. 530. Espin 45. (7. 5... 11. 5) R. A. o" 54 32' Decl. + 48 54' 1907.638 245?4 7^99 .692 244.9 *8.07 .695 244.7 7-92 1907.67 245.0 7.99 The only other measures are given in G. C. Part I. 1910.75 159.4 29.23 89 Burnham: Measures of Proper Motion Stars A and C (10.8) 1910.720 ii6?9 34?i5 .760 117.5 34-37 777 "7-2 34-09 570. V Fiscium. 288. (4. 9... 5.0) R. A. o" 59"' 15" Decl. + 20 50' B and C (10.8) 1910.777 io7?32 72l'79 .780 107.46 73.14 .838 107.63 73.25 1910.75 117.2 34.20 Only recent measures of this. 558. H 1065. (9.4.. .11.4) R. A. o" s8 m 32' Decl. + 27 28' 1908.520 is8?s 23^34 537 158.8 23.37 573 158-6 23.55 1910.80 107.47 73.o6 For the common proper motion of AB. For this we have : Auwers o"o33 in 117^0 Boss 0.055 in 108.2 573. a" Piscinm. 8393. (6.8. ..9.2) R. A. o" 59 m 35' Decl. + 31 32' A and B 1909.703 293?98 s6'.'8o .706 293.83 56.41 725 293.65 56.45 1908.54 158.6 23.42 This is DM (27) 171, and not H63I which could not be found. 560. 286. (8.0... 8. 7) R. A. o h 58'" 43" Decl. 6 7' A and B 1907.636 I54?8 i3':so -657 154-2 13-50 675 154-8 13.45 1909.71 293.82 56.55 In Part II of the General Catalogue the proper motion of Auwers belongs to another star. The motion is small and uncertain. Auwers 0*007 in 203^2 Boss 0.020 in 165.0 About 15' distant sf is h 86; a little brighter in the center. h 86 and star ii.4m 1909.703 204?35 Q2"4 .706 204.97 91.0 .725 204.55 90.7 1907.66 154.6 13.48 A and C (n.o) 1907.6/5 37io 108^56 .692 37.13 108.46 1907.68 37.11 108.51 As the components of 2 86 are of about the same magnitude, the proper motion may be in either. 561. 72 Piscinm. H 1068. (5. 9... 12. 5) R. A. o" 58"- 44' Decl. + 14 18' 1908.652 26o?86 ss?27 .655 260.17 54.72 .671 261.20 55.43 .673 261.62 55.29 1909.71 204.62 91.4 The only other measure is : 1885.14 2o8?o 94". 5 in Eng. A 86 is double ; the other by Rosse. They point to the small star measured above : 1909.703 203?5 35^85 706 203.1 35.83 1009.70 203.3 35-84 574. 77 Piscium. 290. (5.9. ..6.8) R. A. o" 59 m 37" Decl. + 4 16' A and a (13.7) 1910.760 313?! 31^67 .856 313.2 31.76 895 3". 6 31.01 1008.66 260.96 55.18 1911.835 26o?33 55^26 .870 260.93 55.48 .928 260.40 55.60 931 260.00 55.14 1911-89 260.41 55.37 From the four positions of the faint star (1877-1911) we have a fairly accurate value of the proper motion of 72 Piscivm: o"o8i in 24?9 From meridian observations : Auwers 0^050 in 22?4 Porter 0.050 in 344.8 Boss 0.044 m 356.2 Newcomb 0.054 in 358.9 1910.84 312.6 31.78 A and b (13) 1910.760 352^8 76^97 856 351-9 77-44 895 351-5 77-09 1910.84 352.1 77.17 Burnham: Measures of Proper Motion Stars A and B have a common proper motion. No other measures : the faint stars : Auwers o"i2O in 185^7 Porter 0.117 in 180.0 Boss 0.114 m 171.0 576. HIV 66. (6. 6... 10. 2) R. A. o" S9 m 59 s Dec!. + 52 Si' A and B 1907.848 7S?4 22?I3 .86 7 .879 75- 4 75-0 22. 37 22.13 1907.86 75-3 22.21 A and C (n.o) 1909.570 I22?ss 198797 .589 592 122.40 123.20 i9-95 199.14 1909.58 122.72 199.02 From meridian observations the large star has no sensible oper motion : Groombridge o''oo6 in 98^9 The only other measure is : 1880.30 I2I?Cj6 2n Bl. 578. SSpn?/. (9. i. ..9-3) R. A. i" o m 13' Decl. + 79 42' 1907.695 .711 731 34i7 341-5 340.8 I5'.'77 15-83 I5-76 1907.71 341.3 15.79 Both stars in A. G. Kasan, the positions giving: 1869.5 3474 I5"27 DM (79) 32, in the field closely following, is a similar pair : 1907.711 3s8?4 i6':77 -731 357-0 1907.72 357-7 16.08 16.42 580. O2(App.)n. (7. 7... 8. 2) R. A. i" o m 25" Decl. + 38 o' 1907.692 I59?5O 62"44 695 .711 159-75 159-43 62.14 62.19 1907.70 I59-56 62.26 One of these stars has a proper motion of : o':o6i in 270 ( 180) Aitken has recently found the principal star to be a very close air (= A 1516) : 1907-71 3347 ofi6 311 A 589. H 1070. (ii.o...ii.3) R. A. i* o'" 5C Decl. + 6i32' The pair measured for H 1070 is in h 83 and is doubtless the one observed by Herschel, as there is nothing else near agree- ing so well in angle. 1910.529 97?4 ii76s The largest star in h 83 is a 2" pair. 605. (3 Andromedae. (2.1. ..14.0) R. A. i" 3 o s Decl. + 34 59' A and C (12.5) 1909.531 270^55 89793 .570 270.52 - 90.69 .589 270.64 89.71 1909.56 270.57 90.11 A and D (11.7) 1909.531 .570 .573 142.33 142.52 85.26 85-94 1909.56 142.30 85-57 A and E (10.9) I909-53I 304?75 132727 .570 304-85 132.83 589 304-38 133-10 1909.56 304-66 132.73 A and F (n.o) 1909-570 8s?92 I55"i4 -573 85.98 154-82 .589 86.15 155-27 1909.58 86.02 . 155.08 Rejecting AF because the early position is from a single night, we have from the other stars for the proper motion of A : AC R. A. + 07172 Decl. o7o8s AD 0.170 0.084 AE 0.177 0.137 + 0.173 0.102 Therefore the corrected proper motion of fi Andromedae is : o"20i in I20?5 This is given from .meridian positions : Auwers (corr'd) 07199 in I2i?8 Newcomb (Stand.) 0.223 in 123.2 Newcomb (Fund.) 0.216 in 122.8 Boss 0.216 in 122.2 About 14' p and 5' n is h 89 which has a good central con- densation. h 89 and star 12.5 m 1909.531 I2?6o 75764 570 12.75 74-52 589 13-25 75-21 1909.56 12.87 75.12 An earlier position is : 1880.52 I4?o 7573 2n Wn. Burnham: Measures of Proper Motion Stars 609. 0223. (7. 5... 8.0) R.A. i* 3" 2" Decl. + 51 6' A and B 1909.818 191 ?7 I4"6o .821 .838 191.6 190.8 M-S3 14.61 1909-83 191.4 I4-58 One of the proper motions from A. G. Harv., given in Part II of the General Catalogue is manifestly wrong, since there is no relative change in the last fifty years. I have therefore measured a third star for verification of the proper motion, if any, in AB. A and C (12.0) 1909.818 93-93 49"9 .821 94.00 50.57 .838 94-58 49-70 1909.83 94-17 50.05 644. 0226. R. A. i" 6 m 23" (6.2. . .IO.O) Decl. + 29 26' There is no star in the Madlcr place. I have measured one of several small stars in the field. A and C (12.0) 1910.856 -895 341-45 "3-47 1910.87 341.57 113.89 The star referred to by Madler is undoubtedly C of O2 30. 647. Fiscium. 299. (4.7...io.i) R. A. i" 7"' 14' Decl. + 23 57' A and C (13.0) 172^67 143^78 144.00 I44-3I 1912.638 .675 .678 173-15 172.65 626. H634. (6.5.. .n.o) R. A. i "4" 36' Decl. + 8 55' 1909.936 10.570 10.586 260?2 3 260.23 260.20 39*13 39.17 39-25 1910.36 260.22 39-18 1912-583 .622 -638 26o?03 259-64 258.00 39*17 39-34 39-26 1912.61 259-52 39.26 From the measures of the faint star (1879-1912) the proper motion of A is : 1912.66 172.82 144.03 No material change in AB since 1832. The proper motion of Piscium is uncertain from the catalogue positions : Auwers o''oi8 in l8o?o Boss 0.046 in 151.9 649. H202& (6. s... 7-2) R. A. i" 7 m 36" Decl. + 73 23' A and B 1908.709 .711 .728 203.97 203.75 61:38 6i.ro 61.05 1908.71 203.84 61.18 Measures Porter 0^233 in 2376 0.258 in 17.7 638. H2026. (8.6. ..it. o) R. A. i"5 m 42 1 Decl. + 4 15' A and B 1910.838 3os?6 io''i2 .856 305.0 10.55 1910.85 305.3 10.33 1910.838 .856 .893 A and C (9.0) 58?o8 57-80 57-88 231 "39 231 . 16 231.24 1910.86 57-92 231.26 It is now certain that A and B are moving together, and the large change in C is due to that movement. (See G. C. Part II, pp. 294, 1058.) The proper motions of these two stars, Groombridge 267 and 266, are given in the Greenwich Catalogue for 1890: A o"o37 in iO4?o B 0.032 in 121. 8 There has been no relative change, and therefore the proper motions must be exactly the same. For a better determination of this motion hereafter, I have measured a third star : BandC (12.2) 1908.709 2io?6o 47^08 .711 .728 209.47 210.68 47.20 46.21 1908.71 210.25 46-83 652. 0228. (7.0... 8. 5) R. A. i" 7"' 53" Decl. + 80 13' A and B 1908.728 731 750 306.3 302.5 0.67 0.85 1908.74 305-2 0.81 Burnham: Measures of Proper Motion Stars AB and C (7.0) 1908.709 25?8s I3o"20 .711 25.60 130.36 .728 25.82 130.11 For greater certainty I have connected another faint star : D and E 1908.709 35572 97"96 .711 355-37 97-52 1908.72 25.76 130.22 .728 355-02 98.02 CandD(n.o) 1908.709 I566o 66'.'48 .711 I55-83 66.55 .728 I5S-7S 66.60 1908.71 355-37 97.83 E and e (n .1. . .13.0) 1908.728 54?7 io"i7 .750 53-0 10.30 1908.72 156.06 66.54 In the measures by Dembowski, C is treated as the primary. As printed in Part I of the General Catalogue it is therefoie 180 in error. The measures of C do not indicate any material change, and therefore if the proper motion given in Part II is correct, the three stars have the same movement. To settle this hereafter, I have measured a fourth star. 1908.74 53-8 10.23 673. HI077. (8. i... 10. 9) R. A. i" io ra 42" Decl. + 44 o' 1908.711 294?8 38^77 .750 294.7 38.6o .766 294.7 38.30 658. H2030. (9.0... 12. 5) R. A. i h 9'"3i s Decl. + 537' A and B 1908.728 48o 24^12 .750 48.9 24.02 .766 49.2 23.98 1908.74 294.7 38.56 No other measures. 686. Hd 4 7 The pair measured for this is evidently Hd 48 (No. 694). Fox finds no other. 1908.75 48.7 24.04 A and C (9.2) 1908.728 I93?2 38T66 .750 193.2 38.62 .766 193-6 38.69 690. H5453. (8.0... 10. i) R. A. i h i2 m 29" Decl. i 29' A and B 1907.540 2o8?8 27^74 1908.75 193.3 38.66 A and C are respectively DM (52) 297 and (53) 266; and the R. A. should be as given here. The only other measures are .636 208.9 27.44 .638 208.9 27.72 .845 208.8 27.48 those given in the General Catalogue. 672. 2 102. (7.0... 8. 2) 1907.66 208.85 27.60 A and C (12.2) 1907.845 27?o8 242^36 8.000 27.32 243.00 R. A. i" io ro 40" Decl. + 48 23' AB and C (8.4) 1908.709 225?5 io"is .711 224.2 10.20 .728 223.7 10.10 1907.92 27.20 242.68 It is now certain that A and B have the same large proper motion. The third star is connected for an independent value of this motion hereafter. Porter o''499 in 121 ?4 A G Nico o 447 in 115 i 1908.71 224.5 10.15 AB and D (10.8) 1908.709 62^85 27^03 .711 63.07 27.03 .728 62.48 27.16 691. Cassiopeiae. H III. 23. (5. 2. ..12. 3) R. A. i" 12 32" Decl. + 57 36' A and D (10 6) 1908.71 62.80 27.07 The components of the triple, A, B and C have a common proper motion. This, from the measures of D (1832-1908), is : 1909.458 287^22 179^08 .493 287.37 179.00 .496 287.40 179.07 o"o45 in ioo?6 1909.48 287.33 179-05 All the other measures of the three principal stars are given in G. C. Part II. The only other measure is : 1880.40 287^44 I79"oi 2n Bl. 93 Burnham: Measures of Proper Motion Stars Evidently the large star has no sensible proper motion. It is on the border of the cluster h 97. Auwers o"oio in 204?! Boss o.on in 62.5 AB and D (10.5) 1909.458 i82?s8 248*23 .493 182.70 248.19 .496 182.57 247.92 697. 35 Cassiopeiae. S 397. (6 . 6 . . . 8 . 5 ) R. A. i" 13 4* Decl. + 64 2' 1909.589 34730 53"47 -592 347-14 53-32 649 347-45 53-46 1909.48 182.62 248.11 The only earlier measure is : 1880.63 i8i!68 250*06 in BI. No other measures of C. From the measures of D we ha for the proper motion of AB : Measures 0*156 in 117^8 1909.61 347-30 53-42 Possibly a little change in the angle. The proper motion is small : Auwers oToot) in 134^9 Groombridge 0.062 in 106.0 Boss 0.061 in 103.4 706. 2 112. (8. 5... 9.0) R. A. i* I3 m 40" Decl. + 45 42' Porter 0.172 in 138.6 A. G. Hels. 0.109 in 131.2 724. O2(App.)i6. (6. 5... 9. i) R. A. i" 16 18' Decl. + 16 34' 1907.750 I3793 64*93 .772 138.18 64.91 .788 137-95 64.87 A and B 1912.507 33i6 2i?42 .562 331.3 21.82 564 330.6 21.56 I907.77 138.02 64.90 Comparing this with the position by Dembowski in 1875, ' have for the proper motion of the large star : 0*048 in 305 ?9 1912.54 331.2 21.60 One of these stars has a proper motion of 0*032 in 2gi?4 ( 180). Later measures of the very faint star, C, will show whether B has any movement. 710. A.G.I6. (8.6... 9.7) R. A. i" 13 54' Decl. + 13" & 1906.796 IOO?2 30"83 o6d TOO 7 7O 7S 732. y Cassiopeiae. P noi. U-S-.-iS-S) R. A. i" I7 m 27' Decl. + 67" 30' A and C (8.9) 1911.622 I09?8 26*47 .625 109.3 26.54 .644 109.9 26.64 .663 no. i 26.62 O ^ 1906.88 190.4 3O.79 Probably fixed. 712. A.G. 17. (8.5...IO.O) R. A. i" 14" 29' Decl. + 10 50' 1906.796 98?3 54*56 .964 98.7 54.61 From the six positions on 24 n by 2, A and P (1831-191 we have an independent value of the proper motion of Cassiopeiae: 0*087 in 69.2 From meridian observations it is given : Auwers 0*067 in 7o?8 Boss 0.086 in 66.8 Newcomb 0.076 in 66. 1 1906.88 98.5 S4-58 718. 2 115. (7.3..- 7- 5) R.A. i 15- 42' Decl. + 57 3i' AB and C (12.8) 1909.458 278?9 44:85 493 279.0 44.28 .496 278.4 44.71 734. O2(App.)ii7. (7. 5... 9.0) R. A. i* 17- 37' Decl. + 38 24' A and B 1911.622 iO2?83 36T79 .625 102.37 37.56 .644 102.36 37.22 1909.48 278.8 44.61 1911.63 102.53 37.19 94 Burnham: Measures of Proper Motion Stars A and C (8.0) 1911.622 338^60 I44''o2 .625 338.65 144-23 644 339-05 144.00 1911.63 1911.622 .625 -644 338.77 CandD (9.0) 289?67 289.73 289.93 144.08 54-54 1911.63 289.78 54.63 at least three of these stars have some proper motion, I : connected a faint star to show hereafter the distribution of motion in the large stars. C and E(i2.8) 1911.644 28?40 85*41 .663 28.21 85.85 775 27-90 85.93 1911.69 28.17 85.73 737. H 13 R. A. i" 17 52' Decl. + 12 17' H 13 and h 112 1910.666 273?9 H4"2 The nebula in the field is very faint and diffused, and the bisection not very exact. The double star was measured in 1902. The components are distant companions to DM (12) 172. 740. 44 Ceti. H 1079. (6. 9... 10.7) R. A. i" i8 m o" Decl. 8 38' 1907.692 .695 731 1907.71 298.33 298.50 298.40 8 1 787 81.40 81.30 81.52 It is safe to assume that the io.7m star is fixed, and all the motion in the other. My measures (1877-1907) give for the proper motion of 44 Ceti: o"i8o in ioi?3 It is given from meridian positions: Auwers o"i48 in 125^0 Rad. (1890) 0.134 in 115.4 Boss 0.172 in 112.9 741. 9 Ceti. 3 505- (3 .7. ..13- 7) R. A. i" i8 m i" Decl. 8 48' 1910.933 56?78 62718 10.971 57-23 63.22 11.564 57-30 62.88 ".583 57.58 62.34 1911.26 57-22 62.65 The four (5 positions (1877-1911) give for the proper motion of 9 Ceti: o"iso in I97?3 Or, omitting the measure of 1877, which is on a single night : o"i86 in 191 ?4 This motion from meridian observations seems to be too large : Auwers 0^233 in 2o6?o Boss 0.227 in 200.6 Newcomb 0.231 in 201.5 747. O230. (7. 8.. .11.4) R. A. i" 18 50' Decl. + 30 55' A and B 1907.750 238^0 4758 239.2 4-43 1907.77 238.6 A and C (7.5) 1907.750 105 ?30 .772 105.30 .788 105.00 4.50 5678! 56.46 56.82 1907.77 105.20 A and a (13.6) 1907.750 .772 l62?0 159-7 163.1 56.70 25-91 25.92 26.49 1907.77 161.6 26.11 No change in B and C. No other measures of the small star. 748. Hdso. (8.5-..I2.I) R. A. i" 18 53" Decl. + 2 25' 1910.570 .586 .666 264.3 264.4 32722 32.83 32.38 1910.61 264.5 32.48 No other measures of this. About 45' distant, nearly n is h 116; a little brighter in the middle, and much elongated in h 116 and star 12. 8m 1910.666 227?7 22173 753. 2 121. (8. 7... 9. 7) R. A. i" 19 29' Decl. + 63 51' 1909-589 592 .649 274.9 275-4 274.9 I3"o5 13.09 12.77 1909.61 275.1 Probably a little change. 12.97 95 Biirnhain: Measures of Proper Motion Stars 758. CD Andromedae. P 999. (5. 3. ..12.0) R. A. i* 20 m 29' Decl. + 44 47' A and B 1908.711 97?7 2?57 .728 100.7 2.48 :882 99.9 2.57 769. A. G. 18. (8.6...IO.O) R.A.i" 21 55' Decl. + 13 51' 1906.796 41?! 73^90 .906 41.3 74.16 .964 41.4 74.15 1906.89 41-3 74-07 No motion. 778. 4BCeti. See 14. (5. 2. ..12. 8) R. A. I h 23 m 5i' Decl. 22 15' 1907.675 249?2 2i':p9 10.627 249.6 21.99 1908.77 99.4 2.54 A and C (10.7) 1908.652 no?35 124*93 .673 no. 60 124.06 .689 no. 20 124.63 1908.67 110.38 124.84 I have given in Part II of the General Catalogue the proper motion of in ig6?o 990. 0259. (8. 7. ..it. 2) R. A. i" 46'" 20" Decl. 10 19' 1909.649 .703 -780 236^8 236.1 237.3 4.58 4-85 1909.71 236.7 4.69 No material change. Following 72?4 and 91^4 n is h 160 (== h 2442) ; faint and diffused; elongated in 50. 997. 2i8ir'' -T'Bt, ,;;""' For the proper motion of 56 Andromedae we have : Auwers o".i(a in 83?3 Porter 0.157 in 83.0 Boss 0.181 in 86.5 The proper motion of B is given: Auwers 0^057 in 275^0 Porter 0.025 " n 276.8 Boss 0.005 in 309.8 1014. A.G.26. (8. 8... ii.o) R. A. i" 49 m 37' Decl. + 14 31' 1906.964 3io?o 3i"i6 7.022 310.5 31.27 7.540 309.8 30.95 1907.18 310.1 3I.J3 1911-835 3 o8?6 31^36 .870 309-4 3L50 .928 309-7 31.28 1911.88 309.2 31.38 The distance may be increasing if the measure of 1895 is correct. Burnham: Measures of Proper Motion Stars 1015. (9.2... 9.5) R. A. i* 49- 41' Decl.+ iis' This is the new pair referred to in the note to 2 186. As the measures show no sensible motion, it can not be the pair meas- ured by Hall, unless there is a large error in his position-angle. 1906.964 3i?7 o?77 1025. 8404. (7. 6... 8. 6) R. A. i h so m 49 i Decl. + 40 48' A and B 1912.262 77ss 24*83 .564 76.23 24.22 583 76.55 24.52 7.67S 34-9 0.74 7-750 30-5 0.91 1912.57 76.78 24.52 1907.46 32.4 0.81 The following is of 2 186 : and (_ (12.9) 1912.564 09?7 81^98 .622 100.8 81.21 1907-675 32?2 oT63 1018. A.G.27. (9. 3... 10.7) R. A. i" 50" 31' Decl. + 14 30' 1906.964 a63?o 17^62 7.022 262.8 17.52 7.540 263.2 17.85 1912.59 100.2 81.59 The measures of AB (1879-1912) give the apparent motion of the larger star : o"o52 in 2o8?s I have connected a faint star to show whether or not there is any change in B. No proper motion found of either in the star catalogues. 1036. 48 Cassiopeiae. (5 513. (50 75) 1907.18 263.0 17.66 1911.813 264.7 17-54 .835 264.2 17.38 .870 264.2 17.51 R. A. i" 52 7' Decl. + 70 19' A and C (13.6) iQii-775 52o 23^74 1911.84 264.4 17-48 777 5 2 -4 23.36 813 52-3 23.66 Change is still uncertain. > :::: : 1911.78 52.2 23.59 As the first measure of the faint star is on a single night, other observations of C are required for a good value of the ::':./ :: : .*. ' 1020. H 1098. (io...i 2 ) - **** R.A.i' 50 33' Decl. + 59 35' 1909.438 3436 i6?72 515 343-1 16.41 570 344-9 I7-03 proper motion of AB. This is given from the meridian places : Auwers 0^069 in 2&4?2 Boss 0.061 in 275.6 1037. 2192. (8. 2... 9.0) 1909-51 343-9 16.72 H 1098 is one of the principal stars of A 170. No other neasures. R. A. i" 52 23' Decl. + 57 57' A and C (9.0) 1908.518 145^82 76"o2 556 146.12 76.10 559 145-94 75.85 1023. H noo. (6. 3... 10. 6) R. A. i" 50" 47- Decl. + 64" 2' 1910.684 3io?40 39?33 703 310.60 38.78 739 310.47 39-34 1908.54 145.96 75.99 C is DM (57) 448. The only measure is : 1881.46 I45? 47 77715 3n Bl There is an apparent change in the distance. 1910.71 310.49 39-15 The time interval is too short to show whether or not there s common proper motion. The motion of A is given : Boss 0*049 in ioo?7 1044. 47 Cassiopeiae. Sh 22. (5. 5... 9. 5) R. A. i" 53 6' Decl. + 76 42' 1912.408 io8?25 95?42 427 198.33 95-32 .4.30 108.67 95.i6 Batterman 0.031 in 117.0 1012.42 108.42 QS.30 102 Burnham: Measures of Proper Motion Stars From the p measures (1881-1912) the proper motion of 47 Cassiopciae is: o"i28 in ios?9 From meridian observations we have: Auwers o"i25 in 114^6 Boss 0.143 in 112. 2 1048. Si&rej. (8.5... 8. 7) R. A. i" S3" 1 52' Decl. + 6 7' My early measures are omitted in the General Catalogue. rhere is no change in 25 years. 1879.88 117.2 45-47 2n 1050. 2i97. (7-3-.. 8. 3) R- A. i" S3 59' Decl. + 34 43' A and C (13.2) 1909.802 68^70 5"92 .818 68.40 50.55 .838 67-95 50-49 1909.82 68.35 50.65 Measured for an independent determination of the proper motion of A. This from the measures of AB is o"io8 in 53^0. 1051. 49 Cassia feiae. P 785. (5-5---!3-o) R. A. i" S4 m 4 s Decl. + 75 32' A and B 1911.775 243.4 5-5 777 243-7 5-34 .835 246.2 5-32 1911.79 244.4 A and C (14.2) 1911.775 I28?s -777 .813 128.8 127.9 5-41 28'.'00 28.68 27-45 128.4 28.04 1911.79 There is no sensible change in AB since 1881. The proper motion of 49 Cassiopeiae is very uncertain in direction and amount from the catalogues; I have, therefore, measured an exceedingly faint third star. Auwers o"o4i in 242?2 Boss 0.018 in 205.0 1074. 10 Arietis. 2 208. (6.2. . .8.4) R. A. i 56 50' Decl. + 25 21' AB and C (13.5) 1912.562 No other measures of the faint star. The proper motion of the binary system is given : Auwers o"i23 in 83?9 Bossert 0.163 in 9O.o Boss 0.139 in 83.4 1083. 61 Ceti. HV. 102. (6.0... 9.0) R. A. i" 57" 1 39' Decl. o 55' A and B 1908.652 193^50 42"68 .671 193-57 193.58 42.96 43.16 1908.67 193-55 42-93 A and C (11.9) 1908.652 32575 83^27 .671 325-88 82.71 .689 325-68 83.58 1908.67 325-77 83.19 The measures of C should be continued. The motion of A is ; Boss o:'o88 in i:6?i Auwers 0.081 in 135.5 Bossert 0.144 in 123.7 1094. S 4 05- (6.0... 6. 2) R. A. i" 59 m 14" Decl. + 79 7' A and B 1912.545 274^60 55"84 .562 .564 275-08 274.83 55-99 55-71 1912.55 274.84 55.85 B and C (i3-5) 1912.562 .564 224.70 50-94 1912.56 224.62 51.05 .622 .638 I4355 143.13 144-30 98.44 98.77 1912.61 143.66 98.94 The large stars are Groombridge 445 and 443. As there is no relative change, the proper motions must be the same. From the Groombridge catalogue we have : A o"o4O in 4?2 B 0.057 in 1.9 The meridian positions show no relative change : 1810 271^8 55"3 Groombridge 1842 276.2 56.2 O. Arg. N. 1103. A.G.3I- (9-5-.- 12. 8) R. A. 2" o m 25' Decl. + 14 5' 1908.785 .788 .824 I472 146.1 146.9 31.59 32.37 1908.80 146.7 32.29 Disagrees with former positions in angle and distance. 103 Burnham: Measures of Proper Motion Stars 1110. H2ii 4 R. A.2"i m si' Decl. 26 i' No description by Herschel as a double star, but said to be involved in a "nebulous atmosphere," referring to h 196 (=^2460). This has a central point which may be a star, or only a condensation of the nebula. It is probable that this and a near star make H 2114. Star (11.5) and h 196 (12.7) 1910.678 286?o 14^30 1111. Espin 48. (7. 5... it. 8) R. A. 2" 2" ii- Decl. + 42 17' 1907.542 .562 578 189.9 190.4 9788 9-95 10.00 1907.56 190-3 9-94 The only other measure is in G. C. Part I. 1116. 14 Arietis. HVI.69- (5. 2. ..8. 5) R.A.2"2 m 35' Decl. + 25 22' A and B 1911.564 36?so 93'-4i 583 36.43 93-09 .625 36.28 93.18 -644 36.38 93.18 1911.60 36.40 A and C (7.7) 1911.564 278?83 583 278.23 625 278.35 .644 278.40 93-21 105788 106.15 106.14 105-55 1911.60 278.47 106.06 There is no change in either star, and the proper motion of B given in G. C. Part II is obviously wrong. For the large star we have: Auwers 07072 in 119^2 Boss 0.087 in 115.2 1119. H2II3. (9. 5. ..12. 5) R.A.2-2 m 55' Decl. + 70 43' 1907.731 750 199 I 198.1 18762 18.62 1907.74 No other measures. 198.6 18.62 1121. H noo, (9- 5-.. 9. 7) R. A. a" 3'" 6" Decl. + 38 37' 173-5 267o8 173-4 26.12 1909.725 742 1909-73 173-4 26.10 H 1109 and h 197 1909.706 283?! 177776 .722 283.6 178.82 1909-71 283.3 Bisection of h 197 not very exact. 178.29 1124. H2ii6. (9.1. ..12. 4) R. A. 2" 3 m 33' Decl. 10 45' A and B 1909.802 i6o?2 28719 .838 i6o?2 158.2 28.50 1909.82 159.2 28.34 H 2116 (A) and h 199 1909.703 338? o 186798 .722 337-2 185.92 1909-71 337-6 186.45 H 2116 and h 200 1909.703 3546 163744 .722 354-2 163.64 1909-71 354-4 163-54 H 2116 and h 201 1009.703 56?2 227752 .722 56.4 226.96 1909.71 56.3 227.24 H 2116 and h 202 1909.703 92 ?4 253710 92.7 253-43 1909.71 92.5 253.26 h 200 and h 199 1909.703 278?o 56^9 279-6 56-1 1909.71 278.8 56-5 Small, round and very much alike. The only other measures of AB are recent. 1131. 02(A PP .)2 4 . (6.7... 8.0) R. A. 2" 4 31' Decl. + 56 39' A and B 1907.675 33i78 63755 .692 .695 332-00 331.63 63.89 63-65 1907-69 331-80 63-70 104 Burnham: Measures of Proper Motion Stars A and C (10.6) 1907.692 2is9 102*41 .695 215.9 102.68 A and C(ii.8) 1908.824 6i?29 172*92 .843 61.09 172.78 .862 61.00 172.36 1907.69 215.9 102.54 B and C 1907.692 I92?o 142*62 .695 192.1 142-47 1908.84 61.13 172.69 The large common proper motion of the bright stars is well known. For future use I have connected the nearest outside star. Auwers 0*358 in o8?2 Porter 0.346 in 99.6 Boss 0.374 in 8.3 Hd 56 (No. 1142) should be in the field. There must be a large error in the Harvard place. I could not find it any where in the vicinity. 1163. 02(App.)2 S . (6. i... 7. i) R. A. 2" 8 m 29' Decl. + 56 30' 1907.657 204?43 102*93 .692 204.50 102.62 .695 204.36 102.68 1907.69 192.0 142.54 The relative motion of A and B is known with great accuracy. From the measures of AB the apparent motion of A is : 0*251 in Il8?5 The third star, measured from each, will show hereafter how this motion is to be divided for the bright stars. The proper motion of A from meridian positions is given : Stumpe o"337 in I26?o A. G. Hels. 0.347 in 124.3 Porter 0.319 in 126.3 1136. 2225. (8.0... ii. 2) R.A.2 b 5 m 5' Decl. + 53 39' A and C (10.4) 1908.597 i6i?25 150*45 .613 161.00 150.32 .633 161.16 150.26 1907.68 204.43 102.74 The proper motion, if any, is very small, and probably com- mon to both stars. Greenwich 0*030 in 126^9 Boss 0.015 in 90.0 1164. 2234- (7-8... 8. 7) R.A.2"8 m 34 s Decl. + 60 48' AB and C (10.9) 1910.608 239? 90 82*59 .627 239.78 82.17 .666 239.95 82.69 1908.61 161.14 150.34 An earlier position is : 1881.09 i6i?oo 149*29 3n Bl The proper motion of A is given : A. G. Harv. 0*034 in 270 This is confirmed, except as to direction, by the measures of AC. 1148. 22 3 o. ( 7 . 5... 8-7) R. A. 2" 6 ra 28' Decl. + 57" 56' 1907.657 257?9 23*97 .675 257.6 24.02 .692 257.7 23.90 1910.63 239.88 82.48 For proper motion of AB ; conditions not good enough for close pair. 1174. 8 Trianguli. (5. 1. ..13. 8) R. A. 2" 9 m 36' Decl. + 33 41' 1907.675 336?70 65*45 .692 337-40 65.54 772 336.77 65.22 1907.67 257.7 23.96 Relatively fixed. 1149. 66 Ceti. 2231. (6.0. ..7. 8) R. A. 2" 6 m 39' Decl. 2 57' A and B 1908.709 232^0 15*82 .711 231.1 16.01 .766 231.4 15.88 1907.71 336.96 65.40 The only prior measures are my own, given in the General Catalogue. The interval is too short at this time to make any correction to the large proper motion of 8 Trianguli. Auwers 1*144 in ioi?2 Boss I-I79 ' n 102.0 05 . 1908.73 231.5 15.90 1 Burnham: Measures of Proper Motion Stars 1175. xPcrsci. 1170. (6.3...) R. A. 2" 9 39' Decl. + 56 57' A and BC (n.o) 1910.971 353?77 69?9i Ji-529 353-83 69.93 II -545 354-09 69.87 1198. loTrianguli. H 1115. (6.0... 12) R.A.2"n m 59' Decl. + 28" 5' 1908.766 204?9 57^27 .788 204.8 57.51 .804 205.2 57.43 1908.79 205.0 57.40 The large star has no sensible or certain proper motion : Auwers 0*015 in 344^2 Boss 0.012 in 99.5 The measures of the small star should be continued. 1206. 11327. (8. 7... 10.2) R. A. 2" 13 10* Decl. 7" 24' 1909.802 3is?34 23fo6 -838 315.47 23.55 1911-35 353-90 69.90 From the four sets of measures on ion (1879-1911) the sroper motion of the large star is : 0^052 in 281 ?3 Most of the meridian values arc discordant and too small. Auwers oTo68 in 261 ?5 Groombridgc o.on in 206.8 Boss 0.007 'n 277.8 Van Maanan 0.022 in 285.9 A and D (8.8) 1910.971 I36?33 123^09 11.529 136.13 123.85 n.545 136.17 123-21 1909.82 315-40 23.75 H 327 (A) and h 215 1909.802 355?4 202?9 838 355-1 202.4 1911.35 136.21 123.05 1181. 2 242 re;. (6.7...io.o) R. A. 2" io m 20" Decl. 10 23' 1907.692 236?3 55^67 .788 236.1 55.46 .791 234.9 55-43 1909.82 355.2 202.6 For the last we have : 1899.92 354?9 203^2 Kobold. In the General Catalogue for the Dreyer number 823 read 883. 1209. oCeti. HVI. i. (Var...i3.o) R. A. 2" I3 m 17' Decl. 3 31' A and C (9.3) 1909.627 79?28 H7"22 .630 79.40 116.71 .649 79.05 117.47 .666 79.20 117.18 1907.76 235-8 55-52 The five sets of measures (1877-1907) give for the corrected proper motion of A : Measures 0^265 in 105^8 Porter 0.300 in 102.7 1193. O2(App.)26. (6. i... 6. 5) R. A. 2" 1 1" 2- Decl. + 59 28' A and B 1910.971 I99?9O 63^26 11.529 199.73 63.47 "545 199-73 63 23 1909.64 79-23 117-14 From the five positions cited, by O2, Eng. and P on i6n (1864-1909) we have for the corrected proper motion of o Celt: o"222 in I79?6 The later measures will not sensibly change this result. AandC 1911.622 79?03 H7"20 .625 78.95 117-53 .644 78.88 117.02 .663 79-11 117-59 I9II-35 199-79 63.32 A and C (10.2) 1910.971 133? 10 71^99 11.529 132.85 72.33 "545 132.97 72.35 1911.35 132.97 72.22 B and C 1910.971 8i!83 74*75 11.529 81.70 75.16 11.545 81.98 75.64 1911.64 78.99 "7-33 A and B 1911.644 85^23 73"o8 1911.35 81.84 75-i8 As these large stars are relatively fixed, and have a common proper motion, if any at all, I have connected a third small star. The bright stars arc not in Boss' General Catalogue. .663 720 84.83 84.95 73-33 72-74 1911.67 85.00 73-05 106 Burnliain: Measures of Proper Motion Stars B and C 1911.720 69?02 45'! 53 775 69.17 45-62 777 68.77 45-22 1260. 517. (7-5-.. 12.5) R. A. 2" 18'" 54 s Deed. 4 26' A and C (11.5) 1912.675 289?38 55"83 .695 289.57 56.35 .717 290.60 56.18 1911.76 68.99 45-46 Some of the proper motions from star catalogue positions are: Auwers o"23i in 185^9 Boss 0.237 in 180.4 Newcomb 0.229 in 179.2 1217. 9 Persei. P 875- (5-5---I2-3) R. A. 2" 14 o" Decl. + 55 18' 1911.813 162^8 ii"23 .931 161.5 II-4I .942 161.4 11.51 1912.69 289.85 56.12 It is evident from the measures of both companions that the principal star (Lalande 4486) has no material proper motion. 1262. t Cassiopeiae. 2 262 R. A. 2" 19 io' Decl. + 66 52' C and D 1908.520 56?ox> 2o6"i2 537 56.88 206.20 .556 57-00 205.83 1911.89 161.9 "-38 If the principal star has any proper motion, it is very un- certain. There is no material change in the place of the faint companion. Auwers 0^023 in 242?! Boss 0.005 in 90.0 Groombridge 0.013 in 212.1 1224. 2254. (8.S-..IO.O) R. A. 2" 14- 48' Decl. + 23 5' I9I2.6I9 35II I2"l2 .638 352.9 12.10 -678 352.2 12. 08 1908.54 56.93 206.05 For comparison we have : 1880.42 s6?7o 205^66 2n Bl The proper motion of the large star, if any, is very un- certain from meridian positions: Auwers o''o28 in 27o?o Boss 0.014 in 345.9 Newcomb o.oio in 350.5 1269. O2(App.)27. (6. 7... 7. 7) R. A. 2" 20 19' Decl. + 10 2' A and B 1910.950 3i?oo 73:42 10.971 31-97 73-19 11.088 31.83 73.76 1912.64 352.1 12.10 The measures of the small star give the proper motion of A with the greatest accuracy, as the time base is more than eighty years. The four positions by 2, A and f), on n n (1831-1912) give for this movement: 0*051 in 27o?6 1239. A.G.38. (8.7... 8. 9) R. A. 2" i6 m 45" Decl. + 14 52' A and B 1908.709 26os8 34'-44 .728 260.73 34-53 .766 260.90 34.48 1911.00 31.90 73.46 A and a (11.4) 1910.971 I5485 62"i2 ii. 088 154.65 62.22 1911.03 154-75 62.17 No certain change in AB since 1875. 1280. 2270. (7. 2... 9.0) R. A.2 h 22 m 2i' Decl. + 55 i' A and C (10.6) 1910.739 337?9 36"i8 .742 338.2 36-46 760 337-9 36.27 1908.73 260.74 34.48 A and C (11.5) 1908.709 i8o?i2 I26:'i6 .766 180.63 126.10 1910.75 338.0 36.30 Since the proper motion, if any, is common to both stars, only measures of the third star are needed. A. G. Harv. 0^138 in 127^6 1908.74 180.37 126.13 The larger components are supposed to have some proper motion. So far the measures of B show no change. No other measures of the distant star. 107 Burnham: Measures of Proper Motion Stars 1289. 227i. (6.5...H.O) R. A. 2* 23" 38' Decl. + 24 42' A and C (12.7) 1911.813 3440 112^42 835 34-60 112.70 .870 34.83 111.64 1317. 2277. (7.7--.II-0) R. A. 2" 27"' 57 s Decl. + 59 22' A and C (10.0) 1908.537 22?45 i6i'.'oo .556 22.20 161.66 .559 22.14 161.74 1911.84 34.61 112.25 For the proper motion of AB. Boss 0*109 in 139^5 A. G. Berlin 0.106 in 140.1 Kustner 0.097 'n 146.7 1291. P 3 04- (7-5-.. II- 5) R. A. 2" 24" 5- Decl. + 36 56' 1908.520 283^0 20*26 .613 282.7 19.94 .636 283.4 19-90 1908.55 22.26 161.77 No evidence of change. 1881.48 22?43 i6i"i9 3n Bl 1329. O2(App.)28. (6. i... 7. i) R. A.2 h 29 m 37' Decl. + 62 4' 1910.684 I47?oo 68710 .720 147.70 67.73 .739 147.40 67.73 1908.61 282.9 19.96 Distance increasing from proper motion of the large star of about o"o8 in 102. 1294. Ku 10. (9. 4... 9. 8) R. A. 2" 24 14' Decl. + 32 23' 1908.613 3559 3*30 .636 358.5 3-42 692 355-0 3.38 No relative motion since 1875. 1341. 2282. (8. 3... 8. 3) R. A. 2" 31 8' Decl. + 65 8' 1907.791 295? i 7*01 .807 293.7 7-o6 .810 295.1 6.90 1908.65 356.5 3-37 1299. 0242. (7.0... 7. 5) R. A. 2" 25 6' Decl. + 51-47' AB and C (10.4) 1909.627 348?oz 91*21 .649 347-73 91-48 .666 347.85 91.08 1907.80 294.6 6.99 Without change. 1350. A.G.43- (9-4--. 9-4) R. A. 2" 32 20' Decl. + 14 55' 1909.65 347-87 91-26 The close pair has no certain proper motion. 1906.906 59?2 2*70 6.964 58.9 2.72 7.675 60.4 2.67 Groombridge 0*002 in 241^9 Battermann 0.017 in 229.7 From the astrographic positions: 1903.96 348":o 90*63 Catania. AB and DM (51) 589 (9. 5) 1909.627 82^80 125:58 ?o 1628. H 1133. (6. 9... ii. 3) R. A. 3" 8 m 35' Decl. + 69 19' 1006.813 203?8 30764 7.562 203.9 30.88 7.578 204.0 31-14 7.581 203.8 31.11 1907.38 1908.845 .862 203.9 20 3 ?8 204.4 204.7 30-94 30777 30.78 3i.3i 1908.86 204.3 30.95 For the proper motion of AB. Schroeter 0^152 in 155^0 1655. P 1294. (8. 8... 9.0) R. A. 3" I2 m 24' Decl. + 46 15' 1906.813 7.562 7.58i 228^5 228.7 229.6 6.42 6.41 1907.32 228.9 The components are red and green. 6.35 1663. 2375. (8.0... 10. i) R. A. 3" 13 19' Decl. + 23 15' A and C (13.2) 1911.777 .813 1911.81 289.90 200.03 289.85 6 4 78 3 65.06 64.88 64.92 For the proper motion of AB. A. G. Berlin o'.'oSi in 170^2 1668. 2377. (8. 3..- 8. 7) R. A. 3" 13 43" Decl. + 18 45' A and C(n.s) 1912.678 22I?2 24'f53 .695 222.7 24.47 .717 222.6 24.84 1912.69 24.6l Very little, if any, change in the faint companion, and only a little motion in the close pair. Burnham: Measures of Proper Motion Stars 1698. 2384 (7. 8... 9.0) R. A. 3" 18 46' Decl. + 59 29' A and C (10.6) 1908.845 340?6o For the proper motion of AB. This has been given : .862 340.35 339.95 i\7".o2 116.62 116.72 1908.86 34O-30 No sensible proper motion. I879-39 3399S 116.79 117^09 Bl. 1704. Holmes. (8.8... 11.2) R. A. 3" 20 2" Decl. + 59 30' 1907.711 .772 791 53?3 52-6 53.9 5^03 5.05 4.78 I907-76 53-3 4-95 Prior distances discordant. This is DM (59) 661, the place of which for 1880 is as given here. 1711. 2390. (4.8... 9.2) R. A. 3" 20" 51' Decl. + 55 2' A and C (10.0) 1910.818 171^87 109*95 .838 172.45 109.95 .856 171-63 110.26 1910.84 171.98 iio.os For proper motion. The values from the meridian observa- tions are : A. G. Harv. 0^079 in 287^6 Kustner 0.050 in 247.7 Groombridge 0.028 in 284.6 Boss 0.033 in 266.6 1712. H 3 574 R. A. 3" 20" 57' Decl. 21 "56' Lack of description makes it impossible to identify this with certainty. The "cometic nebula" referred to by Herschcl is I. 60; and h 2534 is i" 40" /> the place of II 3374. 1720. 66 Arietis. 3878. (6.0... 12. 2) R. A. 3" 21" 28' Decl. + 22 23' A and C (12.4) 1911.625 226?oo 150*75 .644 226.30 I5I-55 .663 226.10 151.72 1911.64 226.13 151-34 Auwers Porter Boss o"i20 0.115 o.in i8s?3 186.9 175.7 1724. (?8 79 . (6.5... 12. 5) R. A. 3" 22'" 3' Decl. + 10 58' 1912.675 .678 695 7o?75 70.82 70-43 24^50 24.80 24.63 1912.68 70.67 24.64 No sensible change since 1878. No proper motion found in the catalogues. The large star is Lalande 6400. 1729. 0256*7. (6.5...IO.O) R. A. 3" 23"" 6" Decl. + 47 27' 1910.950 11.529 11-545 3S'97 352-08 352.53 25.83 25.93 I9II-34 352.19 25.89 The four positions by A, Hu and fJ on ion (1867-1911) give for the proper motion of A : 0*072 in i69?5 The meridian value is too small : Greenwich o"o45 in 143^8 1730. H IV. 89. (8.0... 9. 2) R- A. 3" 23"' 35' Decl. + 19 41' A and B 1909.744 .760 146.35 20.28 1909-75 146.45 A and C (12.2) 1909.742 203?ss .744 203.86 .760 203.95 20.18 sol'62 50.36 50.96 1909.75 203.79 50.65 As the components have a common proper motion, I have connected a third star. The proper motion of A is : Porter o".203 in io8?o 1731. 27,App.I. (6.9... 7.4) R. A. 3" 23 48' Decl. + 27 19' 1910.838 -856 876 233?st 233.23 233.58 44^03 43.90 44.07 1910.86 No change since 1836. 233.44 44-00 "4 Burnham: Measures of Proper Motion Stars 1732. 2396. (6. 3... 8.0) R. A. 3" 23 55 s Decl. + 58 22' A and C (10.8) 1908.845 I02?o7 i64"53 .862 101.72 165.04 1748. Hn65. (9.4.- -9-8) R. A. 3" 25 24' Decl. 6 6' 1907.788 78 3"89 .791 6.7 3.96 .845 9-8 4-13 .882 101.93 165.55 1907.81 8.1 3-99 1908.86 101.91 165.04 The early measures of 1879 differ among themselves in dis- tance by as much as z"3, but there is no evidence of any change. 1879.64 ioi?88 i6s"55 4" Bl. No proper motion found for the large star. Apparently unchanged. 1750. A.G.68. (7. 5... 9- 5) R. A. 3" 25 m 37' Decl. + 11 8' 1906.772 248?9 17" 19 .796 248.2 17.09 .813 249.3 17.06 1737. 2407. (8. 2... 10. 7) R. A. 3" 24 16' Decl. -n 33' A and (12.7) 1912.675 20I?82 I42"05 .735 201. 20 142.29 1906.79 248.8 17." No motion. I? 1 ?! R 787 (8 o 12 o) 1912.71 201.51 142.17 No change in AB, but common proper motion : Porter o"i4i in 200^7 R. A. 3" 25 49' Decl. + 48 13' A and C (n.o) 1912.622 I76?o8 36"20 .638 175.44 36.13 .675 176.05 36.07 1745. H2I90. (I2.0...I2.9) R.A.3 B 24 m 52' Decl. + 72 1 1' 1909.627 320?9 I4"93 .649 3I5.7 H.22 .706 320.2 14.87 1912.64 175-86 36.13 It is certain now that there is no intermediate companion at 12" distance. The only other measure of C is that given in G. C. Part II. 1909.66 318.9 14-67 H 2190 and h 300 1909.627 i62?3 54''24 .649 160.7 S4-5I 706 55-15 1755. O257- (7-5- "o) R.A.3 b 26 m 2o' Decl. + 22 58' A and B inn? 602 ^2O2 Q //C SO 1909.66 161.5 54.64 .769 319.7 9-45 .778 320.3 9.58 No other measures, h 300 is some brighter in the middle, but bisection not very exact. 1747. 2400. (7-0... 8.0) 1907.75 320.1 9-51 A and C (7.0) 1907.692 2 14? 9 7o"74 .753 214.4 70-88 .769 214.6 70.45 R. A. 3" 25 12' Decl. + 59 38' AB and C (10.3) 1908.845 238^87 92".2i .862 237.28 92.27 1907.74 214.6 70.69 C and c (i3-5) 1907.692 I7o!8 34"86 .788 168.5 35-05 .882 237.30 92.22 1907.74 169.6 34-95 1908.86 237.82 92.23 Probably without change. 1879.40 236^97 92"68 2n Bl. The angle of AC in O2 is 180 in error. It is correctly given by Dembowski, but was changed in Part I of the General Cata- logue to conform to the other. 115 Burnham: Measures of Proper Motion Stars The proper motion in R. A. of the following one of the two principal stars is given o!oo46, but by error in reducing this to arc it was taken as o?O46. The proper motions by Rechenberg should read: A 0^073 in 241 ?2 C 0.057 in 256.8 There are no other measures of the faint companion to C. 1759. P 788. (8.3... 10. 5) R. A. 3" 27 9- Decl. + 42 1 1' A and B 1907.807 .810 .845 306.1 305-6 276i 2.52 2.59 1907.82 306.0 2-57 A and C (8.8) 1907.791 82?3 34^17 .807 82.1 34-15 .810 81.7 33.78 845 82.6 34-23 1907.81 82.2 34.08 No sensible change in either since 1881. 1761. yTauri. 2412. (6. 6... 6. 7) R. A. 3" 27 20- Decl. + 24 4' A and B 1908.709 146^0 o"iS .824 148.0 0.17 1908.77 147.0 0.17 The proper motion is small : Auwers 0^035 in i8o?o Boss 0.032 in 146.6 1771. 2 4 i6 rej. (8.8... 9.7) R. A. 3* 28 2- Decl. + 19 24' A and a (12.0) 1910.893 292?3 22^65 .895 291.9 22.4! 931 293.0 22.72 1910.91 292.4 No early measures of this star. 22.59 1772. 2415. (8.3...io.o) R.A.328 m 7' Decl. + 26 27' 1907-772 8.636 8.652 52.9 52.4 15*27 15.36 15.37 >9o8.35 52.6 15.33 No change since 1866. There is a 13 m star, o".6: 37^4. 1781. 02(A PP .) 3 6. (6.3... 7-3) R. A. 3" 29 26" Decl. + 63 29' 1007.578 58i .657 7o?2 70.2 70.2 45.79 45.91 1907.61 No change since 1875. 70.2 45.84 1801. 0I23I. (8. 2... 12. 5) R.A.3"32 m 45' Decl. + 65 36' 1909.744 .782 A and B 13 ?6 16.7 2.04 1909.76 15.1 A and C (8.3) 1909.744 253?37 .760 253.13 .780 253.25 2.44 84^44 84.76 84.48 1909.76 253.25 84.56 Further measures of C will give an independent value of the proper motion of AB. Schroeter 0^072 in 157?8 1802. Piazzi III. 97. (6. 6... 13.0) R. A. 3" 32 50' Decf. + 59 35' A and B 1909.589 95?9 20^68 20.85 .627 1909.61 c>4-2 05.0 A and E (10.8) 1908.939 i6o?25 9-573 160.68 9.589 160.75 20.76 168740 168.09 168.19 1909.37 160.56 168.23 The only other measure of the distant star is : 1879.40 i6o?i7 i6;:'24 2n Bl. In my measures in G. C. Part II for CD read AD. The proper motions of the two principal stars are given in Groom- bridge : A 0*009 in 3H?l D 0.021 in 52.3 From meridian observations we have for AD : 1810 33?2 54^4 Groombridgc 1875 37-0 55-6 A. G. Hels. 1893 35-2 55-8 Gr. (loyear) I If, Burnham: Measures of Proper Motion Stars 1816. 2 4 33n?;. (8. 4... 9. 5) R. A. 3" 34'" 19" Decl. 8 28' 1911.720 755 775 332.90 333-50 332-73 36^03 36.13 36.05 I9II-75 333-04 36.07 The only other measures are my own in 1904. 1821. 2436. (7.0... 8.2) R- A. 3" 35'" 1 1 ' Decl. 13 o' 1908.671 .692 750 236^2 236.1 236.2 37"i7 37-35 37-40 1908.70 236.2 37.31 The apparent motion of A from the measures is : o"n6 in 69^4 No third star near enough for the micrometer. 1825. p 1182. (6. 4... 14.2) R. A. 3" 35 m 30 s Decl. + 48 8' A and C (13.5) 1910.627 2444i 18757 .660 244.33 18.68 .701 244.20 18.71 1910.66 244.31 18.65 The proper motion of A is : Battermann 07028 in i86i 1839. 31041. (6. 2... 6. 3) R. A. 3" 37 19" Decl. + 27 3 1' A and B 1908.692 42?03 125714 .728 41.85 125.36 41.80 124.79 41.80 125.11 750 .766 1908.73 41.87 125.10 B and C (12.8) 1908.692 334?6 1 1 "69 750 334-7 "-97 .766 333-8 11.94 1908.74 334-4 "-87 The four sets of measures of BC (1888-1908) give for the proper motion of B : 07232 in I3i?2 The motion from meridian positions is too large : Rechenberg 07331 in 123^3 1843. Y Camelopardali. H 2200. (4. 7... 12.0) R- A. 3" 37"' 41' Decl. + 70 58' A and B 1009-742 . 7 6o 763 . 7 8o 240.18 239.78 240.55 55-90 56.04 56.60 1909.76 240.22 56.22 The other measures of this are of recent date. A and C (8. 5) 1909.742 84? 12 .760 .763 .780 83.95 83.73 84.07 106741 105.81 106.79 106.19 1909.76 83.97 106.30 C is DM (70) 260. From meridian observations we have: 1842 83^8 108"! O. Arg. N. 1900 83.9 106.9 Greenwich. The proper motion of the large star is given : Auwers o7o59 in 156^9 Newcomb 0.064 in 152.7 Groombridge 0.054 in 155.1 Boss 0.046 in 140.9 1848. 19 Pleiadum. H 3251. (6.O...IO.O) R. A. 3" 38'" 5" Decl. + 24 6' 1911.663 .736 755 329.20 329-I3 68!' 1 1 68.01 68.02 1911.72 329-39 68.05 From the measures of the faint star by HI and (5 on ion (1880-1911) the proper motion of A is : 07047 in i 28? 2 The meridian observations give : Auwers 07033 in 199^5 Boss 0.049 in 167.1 1854. 2443- (8. 2... 8.8) R.A.3 6 38 m 47" Decl. + 41 7' A and C 1911.663 I72?35 20^84 .720 -755 172.13 172-73 20.66 20.49 1911.71 172.40 20.66 The proper motion given in the General Catalogue from the measures of AC to 1906 will not be sensibly changed by the later position. Measures 17328 in 155^2 Porter 1.358 in 155.0 Kustner 1.437 in 148.7 117 Burnhatn: Measures of Proper Motion Stars 1859. 29 Tauri. H 2004. (5. 5... 12) 1906.772 .796 .813 64?! 64.0 63.8 65.39 65.74 1906.79 64.0 65.28 No early measures. The proper motion of the large star is uncertain : Auwers 0*014 in 239?6 Boss 0.030 in 115.8 1860. H 1139. (7. 4... 9. 1) R. A. 3' 39" 20' Decl. + 70 7' 1909.742 .760 .763 175 i I75-I 175-2 47V24 47-20 47.09 1909.75 I75.I 47.18 B is the 9.3 m star, DM (70) 263. The only other measure is of late date. The proper motion of A is given : Schroeter 0*056 in 2o8?9 1881. H 665- (98...IO.O) R. A. 3" 39 23' Decl. + 30 26' A and C (11.3) 1909.706 .782 .838 255-9 256.0 14-79 15." 15.22 1909.78 255.8 15.04 The only other measure is given in G. C. Part I. 1869. 2447. (7-8... 9- 5) R.A.3'40-8 1 Decl. + 37 58' 1911.663 .720 736 167.42 167.38 28*23 28.13 28.13 1911.71 167.38 28.16 The principal star has a small proper motion. From the measures of % and (1836-191 1 ) this is: 0*062 in 28i?o 1877. 2446. (7.0... 9. 2) R. A. 3' 40" 25' Decl. + 52 17' A and B 1910.701 254?o 8*73 703 739 253.8 253-9 8.78 8.37 1910.71 253.9 8.63 A and C(i3.5) 1910.701 37?s n "60 703 39-5 11.69 739 39-4 11-82 1910.71 38-8 11.70 A is the brightest star in h 308; the others much smaller. No change in AB. The principal star is given a small proper motion: Battcrmann 0*048 in 22i?7 1882. 01184 R. A. 3" 41 H' Decl. + 22 o' About 10' distant from this pair sp, is a nebula discovered by Lohse (Dreyer 1456) about a pair of faint stars 130 19"; " companion nebulous." In measuring this pair, I could not see any trace of a nebula in the field. The magnitudes of the stars were estimated 10.8 and 11.5. 1909.760 I3o?9 9*36 .938 130.2 9.54 1909-85 130.5 9-45 1886. 30 Tauri. 2452. (4. 5. ..9. 6) R. A. 3" 41- 41- Decl. + 10 46' 1911.947 11.950 12.008 59-4 59-0 57-8 9" 10 9.18 9.12 1911.97 58-7 9-13 The proper motion of 30 Tauri is very uncertain in amount and direction. From meridian positions : Auwers 0*022 in I99?3 Boss 0.042 in 121.9 The measures of the faint star show that the motion of A is nearly all in R. A. From the observations of 2, A and on 12 n (1830-1911) we have: 0*004 in 283? 5 1888. 24s6r/. (8. 5... 9.3) R. A. 3" 42 io- Decl. + 1 13' 1909.936 10.701 10.739 119:0 119.9 120.3 22*05 21.69 21.60 1910.46 119.7 21.78 No change apparent from the measures. 1896. A.G.74- (9. 3... 9-5) R. A. 3" 42"" 49' Decl. + 12 33' 1907.772 778 .791 I954 195-9 195-6 ".48 11.91 11.96 1907.78 195.6 Prior distances discordant. n.77 1 18 Burnham: Measures of Proper Motion Stars 1905. 2459. (7. 8... 10. 7) R. A. 3" 43'" 33 s Decl. + 29 18' A and B 1911.931 33o?8 i8"io 947 330.6 18.49 950 331-1 18.33 1911.94 B 1911.947 950 330.8 and C (13.0) 293 o 292.6 18.31 53"48 53-89 1911-95 292.8 53-68 A and E (10.0) 1911.947 i84?78 "9-'73 11.950 184.80 119.96 12.008 184.92 119.74 12. Oil 184.95 119.76 1911.98 184.86 119.80 From the measures of AB the principal star has a proper motion of o"o6s in about 180. No other measures of the faint star. 1913. 245S- (8.2... 8. 7) R. A. 3" 44'" 57 s Decl. + 69 10' A and B 1909.821 i66?3 ii"96 .838 933 166.1 166.2 11.84 11.91 1909.86 166.2 11.90 No change in AB. The principal star is given a small proper motion : Schroeter o"o97 in I09?2 To determine whether or not AB has any proper motion, I have connected two small stars. 1909.838 10.627 10.666 A and C (14.2) 33i?73 331-49 331-83 58.42 58.32 1910.38 331-68 58.29 A and D (12.6) 1909.838 2io?97 o6:'57 .933 211.29 96.20 .936 211.08 96.19 1909-90 211. II 96.32 1921. t, Persei. 2464. (2. 7. ..9. 3) R. A. 3" 46"' 35 s Decl. + 31 32' A and C (ii.i) 1911.947 11.950 12.008 286?S3 286.25 286.68 33"22 32.59 32.68 1911.97 286.49 32.83 A andD (9.3) 1911.947 196^98 9o".8i 11.950 197.17 91.22 12.008 196.93 9i.iS 12. Oil 197.02 91.08 1911.98 197-02 91.06 The proper motion of Persei is wholly uncertain, so far as meridian observations are concerned: Auwers o"oos in 2i2?6 Newcomb 0.033 in 163.2 Boss 0.021 in 143.1 The measures of the distant companions show that the proper motion of the large star is very small, if any at all, but further measures are necessary to give a definite value. 1925. Hn66. (8.0... 12. 2) R. A. 3" 46 m 48 s Decl. 8 51' A and B 1910.701 35?8 2"os 739 37-2 2.12 1910.72 36.5 2.08 A and C (10.7) 1910.678 I390 ii7"oo .739 14.03 117-48 .760 14.00 117-49 1910.73 13.98 117-32 For the proper motion of AB, if any, I have connected a third star. Three small nebulae by Stone sf are too diffused for good measures. 1933. 43 Persei. 8440. (5. 5. ..10.3) R. A. 3" 47 41' Decl. + 50 21' A and C (11.4) 1908.843 133 ?28 I02:'24 .845 .862 133-57 132.88 102.90 102.66 1908.85 102.60 133-24 No other measures of this. This principal stars have a com- mon proper motion. Auwers o"i46 in 149^0 Porter 0.155 in 147.6 Rogers 0.151 in 141.8 Boss 0.158 in 145.3 1936. Ho 325. (6. 5... 13-0) R. A. 3" 47 m 53' Decl. + 30 41' 1910.893 .895 931 I2 4 10.7 11.7 22:93 22.91 23.32 1910.91 ii. 6 23.05 Change doubtful. No proper motion found in the catalogues. 119 Burnham: Measures of Proper Motion Stars 1961. OSgSnr;. (7.0... 8. i) R. A. 3 b 5i ln 3' Decl. + 47 48' A and B 1912.619 175-33 39"i4 .622 175-70 39-42 638 i75-8o 39-24 A and a (12.5) 1910.739 249?7 sS'/pi .760 250.5 39.38 .770 250.6 39.41 1910.76 250.3 39.23 The only other measures of the faint star are by Doolittle in 1899. 1983. 2476. (7- 5- --8. 7) R. A. 3" 53 36' Decl. + 38 20' A and B I9I0.72O 286?O 2l"29 .739 286.4 21.35 .760 286.1 21.15 1912.62 175.61 39-27 No sensible change since 1867. No proper motion found for the principal star. I have connected an exceedingly faint star, which was difficult to measure on each night. B and C(i3-7) 1912.622 i86?o 3i"54 .675 182.3 32.23 .678 183.4 30.94 1910.74 286.2 21.26 The measures show rectilinear motion in AB. B and C (11.7) 1910.720 2I3?2O &9"72 .739 212.90 69.48 .760 212.93 69.29 1912.66 183.9 31-57 1969. 2475. (8. 2... 10. 6) R. A. 3" 52 3' Decl. 7 28' 1910.933 20?9 7:59 10.971 22.2 7.59 11.088 21.5 7.59 1910.74 213.01 69.50 Third star measured to show whether there is any proper motion in B. 1999. H22I7. (12. 3... 13.0) R. A. 3" 55 15' Decl. + 52 18' 1910.818 287?8 7"43 H 2217 is in the sf part of h 310, which Herschel calls a "curious knot of stars." There are several small pairs here; the one measured corresponds in all respects to the description inH. 2008. Espin 55- (8. 3... 12. 9) R. A. 3" 56 m 12' Decl. + 58" 58' 1909.742 265^3 9?9l .744 264.0 10.21 .780 264.0 10.40 1911.00 21.5 7.59 Probably unchanged. 1975. Y Eridani. H 3608. (3 . 1 ... 13 .0) R. A. 3" 52 24' Decl. 13 51' 1908.692 24i?8o 52*58 8.750 242.53 52.96 9-703 242-98 52.75 9.725 242.53 52-79 1909.22 242.46 52.77 From the three sets of measures (1877-1909) we have for the proper motion of y Eridani: o"i24 in 137?! From meridian positions: Auwers oTiio in I5l?9 Newcomb 0.130 in 148.1 Boss 0.132 in 148.4 1977. 01042. (7. 5... 8. 7) R. A. 3' 52" 36' Decl. 3 o' A and BC 1910.739 9323 55'6g 760 93.53 55-84 .770 93-08 55.47 1009.76 264.4 10.17 2013. 36 Tauri. fJ 544- (6.0... 12. 5) R- A. 3" 57 m 1 1' Decl. + 23 46' 1908.785 258?4 26T02 .824 258.2 25.36 .826 258.0 26.11 .882 257.4 25.52 1908.83 258.0 25.75 It is probable that the companion does not share in the small proper motion of A. Auwers oToi2 in 2I4?5 Boss 0.022 in 190.6 1910.76 93-28 55.67 120 Burnham: Measures of Proper Motion Stars 2014. 2485. (6.1... 6.2) R. A. 3" S7 m i8 s Decl. + 62 o' A and a (13.1) 1910.678 256^7 6:'99 .681 256.9 6.65 .701 256.3 6.36 1910.69 256.6 A and b (12.7) 1910.678 359-9 .681 3S8.I .701 359-1 6.67 1 1 .10 II. 01 10.93 1910.69 1910.678 .681 .701 359-0 A and c (13.2) I328 130.4 129.7 ii. 01 I4"44 14.32 14-42 1910.69 131.0 14-39 These small companions are not in 2. The large stars not given in Boss' General Catalogue. A and d (9.4) 1910.666 76=63 I39''o9 .678 76.80 138.60 .681 76.77 138.79 76.73 138.83 1910.67 For this we have only : 1881.48 76?I2 I39"3i 2n Bl. These stars are in the brilliant Herschel cluster, VII. 47. 2022. 0271. (7-0... 9-0) R. A. 3" 59'" 16* Decl. + 33 7' A and C (12.5) 1008.843 ii95 .884 II9-5 118.6 35"27 35-00 35-22 1908.87 119.2 No proper motion in AB. 35-i6 2028. 8443. (9-0... 9-9) R. A. 3* 59 49' Decl. + 14 2' A and B 1908.920 no?2O 42'' 07 8.974 9.071 I 10:20 109.55 109.68 42.32 41.82 1908.99 1908.920 8.974 9.071 109.81 A and C (8.0) 305.15 305-13 42.07 184.92 184.89 1908.99 305.09 184.88 The A. G. positions of A and C give 303^0 : 183^6 (1875). The three stars are W III. 1133, "35 and 1127; the relative positions in that catalogue are inconsistent with other observa- :ions. 2040. 2495. (6.0... 8.8) R. A. 4" o m 54" Decl. + 14 50' 1906.796 .813 .964 219.4 220. i 223.2 3-70 3-96 1906.86 220.9 3-93 Probably unchanged. No proper motion found for the large star. Not in Boss' General Catalogue. 2073. vPersei. 0273. (4. 5. ..12.0) R. A. 4" 6 m 5" Decl. + 48 6' A and C (10) 1908.709 .711 .728 231 75 231.62 23L95 84"34 84.14 84.33 1908.72 231.77 84.27 The proper motion of the large star is small : Auwers o"o28 in io8?5 Newcomb 0.033 in 151.2 Boss 0.030 in 154.3 2081. P 1278. (6. 5... 13- 7) R. A. 4" 7 o' Decl. + 8 35' A and C (12.5) 1908.884 253^39 54?73 9-763 253.23 54.90 9-838 253.10 55.15 1909.49 253.24 54.93 No proper motion found for the large star. 2102. 39 Eridani. 2 516. (6.0... 9.0) R. A.4 h 8"'4i" Decl. 10 33' A and C (10.6) I9IL775 159 15 149" 15 .813 I59.30 148.87 .832 I59.40 148.58 159-28 148.87 1911.81 The large stars have a common proper motion. No change in AB. No other measures of the small star. Auwers o"i64 in 193^0 Boss 0.157 in 184.0 Newcomb 0.151 in 184.6 121 Burnham: Measures of Proper Motion Stars 2103. OZ(App.)44. (6.2. ..7.2) R. A. 4" 8 42' Decl. + 4SS5' 1908.709 322?os 58:35 .711 322.00 58.29 A and b (11.5) 1907.845 7?93 2io78i 7-865 7.93 210.53 8.000 8.12 211.09 8. 022 8.20 211.43 .728 321-95 58.19 1907-93 8.05 210.96 1908.72 322.00 58.28 No relative motion since 1875. 2106. H VI. 98. (6.2... 6. 7) R.A.4'9-7' Decl. + s55' A and B 1907.845 3I523 64774 865 315-15 64.85 879 315-23 64.91 The most probable value of the proper motion of the large star from the ten sets of measures of Ao and three of A6 (1850-1907) is as follows: Aa R. A. 2:235 Decl. 37411 Afr 2.247 3-409 Taking the mean, the corrected proper motion of 40 Eridani .is: 4:080 in 2I3?3 Other values from meridian positions are : Auwers 4:054 in 2ii?9 Porter 4.108 in 212.6 1907.86 315-20 64.83 These measures give a smaller distance. The meridian posi- tions in A. G. Leip. give: 1884.0 3I5?3 64:9 The proper motion of A is given : Bossert 0:175 in 2io?8 Porter 0.169 ' n 221.4 Newcomb 4.081 in 212.7 Boss 4.082 in 212.7 Band C 1907.675 44?9 2:62 .810 42.0 2.43 .845 44.2 2.51 .865 44.2 2.40 AandC 1907.865 47?42 215:78 .879 47.45 215.67 974 47-43 215.57 1907.80 43.8 2.49 1908.709 42?2 27&S .750 40.4 2.62 .824 45.3 2.47 1907.91 47.43 215.67 .974 41.8 2.36 The A. G. Leip. relation is : 1885.3 474 21373 implying a proper motion for A of o"ii5. C and D (9.3... 9. 4) 1907.865 I38?40 52:71 .879 138.85 52.64 974 138.75 52.83 1908.83 42.6 2.57 2118. 02(App.) 4 6. (7.0... 7. 3) R. A. 4" i i m 25" Decl. + 55 14' 1907.578 I59?57 98:93 .581 159.80 98.86 1907-91 138-67 52.73 -638 159.75 99-10 C and D arc DM (5) 616 and 617. Repeating the measures of these stars after a proper interval of time will furnish an accurate and independent value of the proper motion of AB. 2109. 40 Hridani. 2 518. R.A.4"9 m 52' Decl. 7" 47' A and a (n.o) 1907.810 si?43 113:67 7.845 51.20 II3-/6 7.865 51.28 113.89 8.000 51.60 "4.87 8.022 51.33 114.67 1907.60 I59-7I 98.96 A and a (12.0) 1907.581 i88?6 33:67 No relative motion. The proper motion of A is given: A. G. Harv. 0:09 in 180 2121. S 4 45. (6. 5... 7- 2) R. A. 4' 1 1 56- Decl. + 49 58' A and B 1007-578 3272S 73"7S 58r 327.47 73.56 .638 327-55 73-92 190; 51. .17 "4-17 1907.60 327.42 73.74 122 Burnham: Measures of Proper Motion Stars The four positions (1841-1907) give for the relative motion of A: o"o27 in 3io2 As B is nearly 7 m, this motion, wholly or in part, may belong to that star. To determine that hereafter, I have measured a third small star: A and C IO 7-57S 260^70 150736 .581 260.87 150.67 .638 260.88 150.33 2143. Knott 2. (9. 6... 9. 6) R. A. 4" I4 m 49 s Decl. + 19 32' 1907.022 202?4 2"75 .102 205.2 3.20 .118 205.0 2.00 1907.08 204.2 2.95 This star has been thought to be variable. When the foregoing measures were made, Hind's variable nebula, which is about 20' s, was examined and found to be still invisible. In 1890 the nebula was very plain with the 36-inch at the Lick Observatory, with a length of 4" or 5" in the direc- tion of about 150 (Monthly Notices LI, 94). The 9.4 m star, DM (19) 705, is in the centre. This may be only the nucleus of the nebula. The magnitude now is about 10.8. The faint nebula in the field sf>, photographed by Keeler with the 3-foot reflector (Monthly Notices LX, 424) was not seen. This is too faint to be visible with the largest apertures except under the most favorable conditions. Nothing seems to be known as to the period of Hind's nebula. (See Pub. L. O. II p. 175.) The 8.7m star, DM (19) 704, which was connected by measures with the nebula in 1890, has a small companion' 1907.102 40?o 59"39 .118 40.7 59.04 1907.60 260.82 150.45 2126. 2523- (7-2... 9-2) R. A. 4" I2 m 34' Decl. + 23 27' A and B 1908.613 i62?3 io?37 .633 162.9 10.36 .636 162.2 10.36 1908.63 162.5 10.36 A and C (8.0) 1908.613 48^23 io8"49 .633 48.03 108.48 .636 48.20 108.38 1907.11 40.3 59.21 2150. Ho 329- (6.0... 13) R. A. 4" is m 19' Decl. o 23' A and B 1909.091 64?o 35-74 .703 63.5 35.83 1908.63 48.15 108.45 The only other measure of the distant star is: 1893.03 48? 13 109" i i 2n Gla 2128. O2(App.)49. (7-0... 7-2) R. A.4 h i2 m 4i s Decl. + i 29' I9II.93I I44?70 I02"9I 11.942 I44-63 103.07 12.008 144.58 103.38 1909.40 63.7 35.78 As A and B appear to have a common proper motion, I have measured a third star. Porter 0:138 in I95?7 A and C (n.o) 1909.071 279?4O 198": i .091 279.20 197.82 .703 279.28 197.41 1909.29 279.29 197.78 h 313 is about 40' distant sp Ho 329. I, ->T> tnA T\A/T ( t1 T"7 1911.96 144-63 103.12 There is no third star for comparison. 2134. ssTauri. 0279. (7.0... 8. 8) R. A. 4" 13 3' Decl. + 16 14' 1908.709 3o8?o of 27 The proper motion of the binary system is given: Auwers 0^107 in 106^4 Weersma 0.095 m 103.4 This belongs to Boss' group of Taurus stars with common proper motion. 1909.785 241 ?7 I72?23 .838 242.6 172.15 1909.81 242.1 172.19 2158. 2537- (8. i... 1 1. 2) R.A.4 h i6 m 2i' Decl. 10 14' 1908.750 .824 342.0 341-6 342-1 i6"43 16.25 16.52 1908.82 341.9 16.40 The five positions by 'S, A and fJ (1832-1908) give for the proper motion of A: o"o4O in 209^7 123 Burnham: Measures of Proper Motion Stars 2160. 2533- (6.0... 7. 5) R. A. 4" l6 m 37" Decl. + 34 2' B and C (10.5) 1908.671 216?! 3"oi -750 218.4 2.57 A and B 1908.613 6o?83 I9"S4 .633 60.45 19-50 1908.71 217.2 2.79 The only other measures are given in Part I of the General 1908.62 60.64 19-52 A and C (10.8) 1908.597 I9i33 I09"66 .613 191.13 109.59 .633 191-13 109.89 2183. b Tauri. 11 VI. 101. (4. 4... 9.0) R. A. 4" 18'" 33' Decl. + 17 38' 1908.61 191.20 109.71 No change in AB since 1831. The only other measure of the distant star is: 1907.673 233?2 77?ip -675 233.3 76.8i .692 233.4 77-23 7" 233-3 77-02 1880.47 189^93 lio''8s an Bl No proper motion found for the large star. 2182. 62 Tauri. 2534. (6. 2... 8.0) R. A. 4" i6 ra 45" Decl. + 24 i' B and C (11.4) I9II-7S5 336?33 iio?33 775 336.33 "0.36 -777 336-27 110.79 1907.69 233.3 77-o6 The proper motion seems to belong to both stars. Auwers o!'oo6 in io6?4 Newcomb 0.112 in 105.5 Boss o.no in 103.1 2193. 2 538. R. A. 4" 19 17' Decl. + 63 58' About 40' directly n of 2 538 is the comet-like nebula, II. I9II-77 336.31 "0-49 For the proper motion of AB. The proper motion of 62 Tauri, which is that of the Struve companion, is given : Auwcrs o"o2O in 187^8 Boss 0.029 in 142.3 768, extended in no. Dreyer 1569 and star 9. 5m 1909.722 i?4 5o"26 .725 1.6 50.36 .763 i-i 50-06 2163. s(>Persci. O28r. (6.0... 8. 8) R.A.4 h i6-5i' Decl. + 33 41' 1908.652 36?3 4:32 .671 36.8 4.49 1909.74 1.4 50.23 The comparison star is DM (64) 450. Eng. gives A Decl. 52^(1884.17). Dreyer 1569 and star 12. 4m 1909.722 iio?3 87^5 .725 109.3 84-8 .763 108.9 85.9 .689 38.0 4.42 .709 39-1 4-49 1909.74 109.5 86.1 1908.68 37-5 4-43 There is retrograde motion in angle, with no sensible change in the distance. The proper motion of 56 Persci is : Auwers 0^077 in is8?2 Boss 0.093 in 152.0 2166. Doolittle7. (9.5...io.o) For the last we have : 1884.17 io6?8 85^2 in Eng. 2198. 2 547. (8. 5... n. 5) R. A. 4" 19"' 48' Decl. i 40' 1906.890 ss!i i?82 .906 57-0 1.83 .964 58.1 1-84 R. A. 4" 16 59' Decl. + 33 36' A and B 1908.671 2i2?o 46^71 .689 2i2?o 46.22 .750 211.9 46.82 1906.92 56.7 1.83 1908.709 6o?i i"o6 .750 58.6 1.92 .824 60.6 1.79 .974 61.9 i. 80 1908.70 212.0 46.58 1908.81 60.3 1.87 124 Burnham: Measures of Proper Motion Stars The proper motion of A given in the General Catalogue from the measures of AB (1831-1902) will not be sensibly changed by the later positions : o"o49 in 3i5?o A and DM ( i) 641 1006.890 2S8?4 2Il'.'24 .906 258.3 211.09 .964 258.5 211.15 1906.92 258.4 211. 16 A comparison of this position with Lament and A. G. indi- cates a proper motion of o"o6i in declination for one of the stars. The 7.6m comparison star has a 13 m companion : 1906.964 233?! 26"o9 2201. 2545- (7-S... 9- 3) R. A. 4" 20 8 s Decl. + 17 56' B and C (10.5) 1908.597 215-38 I49''78 .613 215.10 150.00 .633 214.97 149-00 1908.61 215.15 149.89 Earlier measures of the distant star are: 1879.48 2i4?s8 I5"i7 2n Bl. 1910.895 -931 -933 S78 58-6 57-4 18.33 18.78 1910.92 57.9 18.58 Perhaps a little diminution in distance. The proper motion of A is given: Weersma o"o2i in 241^7 2210. 2548. (6.0... 8.0) R. A.^'ai" 1 18' Decl. + 30" 6' A and C 1908.597 i9523 121^29 .613 -633 195-00 195-03 121.14 121.28 1908.61 195-09 121.24 C and c (10.3.. .13.0) 1908.597 52?3 i6"67 -633 51.7 16.48 No change in AB. The proper motion of the large star is small : Auwers o"oi7 in 122^3 Boss 0.008 in 128.8 Newcomb 0.022 in 37.0 2230. 80 Tauri. 2554. (6.5-.-9-O) R. A. 4" 23 17' Decl. + 15 23' 1908.709 .824 41 .2 36.8 0.76 1908.77 39-0 The proper motion of 80 Tauri is : 0.69 Auwers 0^072 in 93^2 Newcomb 0.087 m 97-3 Boss 0.106 in 96.5 2232. 2 556 rej. (9-5... 9-5) R. A. 4" 23 50' Decl. + 5 2' 1906.796 6.890 7.022 289^6 288.5 289.7 4*28 4.27 3.96 1908.61 52.0 16.58 The other measures of the distant star are : 1880.50 I9435 121^55 2n 1893.02 194-34 121.03 211 No proper motion found for the large star. Bl Gla. 2220. i Camelop. 2550. (5.1. ..6. 2) R. A. 4" 22 m 32' Decl. + 53 39' A and B 1908.597 307?o io"22 .613 306.5 10.18 -633 307-5 1908.61 307.0 10. 16 10.19 1906.90 289.3 4- '7 The only other measure is on a single night. 2237. H 1146. (8. 2... 10.3) R.A.4"24 m 39' Decl. 71 13' 1907.711 .791 .807 40.7 38.9 40.2 26.05 25.96 1907-77 39-9 No early measures of this. 26.11 2239. 57 Persei. Sh 44. (5. 2... 6. 2) R. A. 4" 24 58' Decl. + 42 48' A and B 1908.652 io8?25 ii5"56 .671 .673 1908.67 198-52 198.56 198.44 115.48 115-37 115-47 125 Burnham: Measures of Proper Motion Stars BandC (12.5) 1908.671 3I483 51:32 .692 314.13 51.44 2248. HVI.64. (6.0... 9.4) R. A. 4" 26 m 27' Decl. 3 28' 1911.775 n743 I24"S5 .796 117-47 124.31 813 "7-33 124.53 1908.68 314.48 51.38 AandC 1908.671 224?93 103^86 .692 224.45 103.52 1911.79 117-41 124.46 The only other measures are my own of late date, h 320 is 2 / and 4' M; small, and a little brighter in the center; no good comparison star. I do not find any proper motion for the large star which is 5.6m in SD. 2269. 2 570. (7.0... 8.0) R. A.429 m 3i' Decl. 9 59' 1908.709 259?8 12^84 .750 259.6 12.85 .824 259.3 12.78 1908.68 224.69 103.69 A and D (11.2) 1908.671 353?87 76T4I 673 353.85 76.60 .692 354-23 76.22 1908.68 353.98 76.41 These measures continued will show the separate proper motions of the large stars. We have for the proper motion of the larger star: Auwers 0*007 "> 221 ?5 Newcomb 0.014 in 73.3 Boss 0.007 > n 81.4 The motion of B is given: Auwers oTo7O in 155^7 Boss 0.075 in 165.6 2244. X 560 rej. (6. 8... 9.5) R.A. 4 2 S -53' Decl. -13 54' 1006.796 44o 29739 6.890 44.2 29.40 7.022 43.3 29.46 1908.76 259.6 12.82 No relative motion since 1830. 2277. 2571- (6.3... n. o) R.A.4 h 30 m 3' Decl. -3 5 1' A and C (12.6) 1909.760 I99?i8 45^81 .763 199.82 44.78 .780 199.60 44.76 1906.90 43.8 29.42 No early measures of this. 2247. Hd- R. A. 4" 26" ii- Decl. + i 2' h 318 and star n.6 m 1908.974 6i?i 6of9 9.706 62.6 61.5 9-722 62.3 62.0 1909.77 199-53 45-12 A and D (12.6) 1909.760 273?6s 6o"o2 763 273.92 59.01 .780 273.75 59.6i 1909.77 273.77 59-55 A and SD (3) 832 AR. A. A Decl. 1891 + I3?45 + 274"3 A. G. Stras. 1909 13-37 274.4 P The proper motion of the principal star (Bradley 635) is small : Auwers O?039 in 255?o Boss 0.044 in 223.1 h 320 and star 13. om 1009.760 I95?3 H5"02 .763 195.5 114.28 .780 196.3 114-27 1909.47 62.0 61.5 This is about Yi sp the Hd pair; and more distant are two other nebulae. h 316 and h 317 1008.974 8i?o 59?2 9-706 79.2 57.9 9.722 79.3 59.1 1909.47 79-8 58.7 A prior position is : 1887.08 78?! 57:6 in Eng. 1909.77 195.7 "4-53 This is about 30' nf 2 571. 126 From the three P positions of the faint star, each on 3 n (1888- 1911) the proper motion of A is : o".io6 in 144^8 Some of the values from the catalogues are : Auwers o"ioo in I55.o Porter o.ioo in 153.2 Boss 0.112 in 143.2 2285. O2 (App.) 53. (7.0. . .7.2) R. A. 4" 31 16" Decl. + o 20' Burnham: Measures of Proper Motion Stars 2279. 2 Camelopardali. 1295. (5.0... 7.0) R. A. 4" 30'" 27' Decl. + 53 14' AB and D (13.2) 1911.720 2i4?9 22''78 775 .777 1911.76 215-5 215.1 215.2 22.77 22-34 22.63 1906.796 .800 .906 172.6 172.4 77.71 78.01 77.81 1906.86 172.5 Without material change. 77.84 2296. 2575. (8.8... 9. 8) R. A. 4" 32 32' Decl. o 38' 1911.870 12.046 12.066 159.0 159.3 159.3 5"oo 4-74 5- ii 1911.99 159.2 4-95 No material change since 1831. h 321, which is about 30' distant up 2 575, is in the field, closely p the 8.3m star, DM ( o) 730; too indefinite for accurate measures. 2304. 11346. (6.i...ii.o) R. A. 4" 33 49' Decl. + 28" 23' 1911.663 75} 775 5478 54.63 54-57 43-19 43-34 43-32 I9".73 54-66 43.28 No apparent change in ten years. The proper motion of A is given: Boss o''o6o in 134^0 2312. 2583. (7- 8... 9-4) R. A. 4" 34 m 45" Decl. + o 44' A and B 1907.675 326?7 S''6S .692 772 326.2 325-8 5-73 5-66 1907.71 326.2 A and C (9.6) 1907.675 264^80 .692 264.97 .772 264.60 5-68 99''56 99-39 99-54 1907.71 264.79 99.50 No certain change. The distance of C by South is too large. 2313. T Tauri. S4S5- (5-0... 7-2) R. A. 4" 35 m 2 s Decl. + 22 44' 1909.627 .640 .666 2I2?76 212.55 213.03 6 2 ':6o 62.55 62.55 1909.64 212.78 62.57 No relative change in these stars. There is but little doubt that the principal star is a close pair. A recent examination of the Lick Observatory observing books shows that eleven years before the occupation referred to, I observed this star with the 12-inch, Oct. n, 1888, and entered it as a close pair, but it was forgotten, and apparently not looked at again. No elongation was noticed at the time of the measures given here. The proper motion of T Tauri is given : Auwers o"oi6 Newcomb 0.022 Boss 0.023 in 237:0 in 153-9 in 165.9 2315. H 348. (6. 3... 10. 6) R.A.4 h 35'" 15" Decl. + 33 42' 1910.950 11.008 11.622 28 5 ?3 285.5 284.3 29.82 30.21 1911.19 No early measures. 285.0 30. ii 2322. A.G.Si. (9. 5-.. 9-5) R. A. 4" 36 18' Decl. + 6 16' 1006.796 .964 281 ?8 282.4 37"i2 37-33 1906.? 282.1 37-22 127 Burnham: Measures of Proper Motion Stars 2325. Espin 13. (7-4... 13) R. A. 4" 36- 48' Decl. + 4 3 3 4 ' 1910.760 2i82 i6".i6 10.931 215.8 16.30 11.775 215.7 15.83 No other measures. These stars arc SD (5) 1020 and 1021. h 330 is about 5' nf H 27; has no very definite central con- densation. h 330 and SD (5) 1024 1910.678 353?s 191?! 2357. 2598. (8. 2... 9.7) R. A. 4" 41"' 37' Decl. + 17 36' 1907.675 3i6?9 9?34 .772 316.9 9.50 845 316.7 9.31 1911.15 216.6 16.10 Disagrees with the former measures in distance. There is a still fainter companion 14 m about the same distance : 1910.760 348^5 isT84 " 775 347-1 16.24 1911.27 347.8 16.04 2330. 55 Eridani. 2590. (6. 2... 6. 7) R. A. 4' 37 50" Decl. 9 i' 1910.895 3i7?4 9*29 931 3I7-7 9-31 1907.76 316.8 9.38 No change since 1828. 2358. H 684. (9.0... 10. 7) R. A. 4-41'" 51' Decl. + 10 43' ^ A and B 1909.859 263?8 24*07 09.933 264.2 24.33 10.678 263.7 24.16 1910.91 317.5 9.30 h 329 is about 15' distant /; small and faint ; near 56 Eridani. 56 Eridani and h 329 1910.895 I09?5 290? I .931 109.8 291.9 1910.16 263.9 24.19 A and C (10.2) 1909.859 2io?6 46:'69 10.049 211. 2 46.16 10.678 211. 2 46.54 1910.91 109.6 291.0 The proper motion of 55 Eridani is given : Auwers 0^024 in 2O5?2 Boss 0.044 > n 126.2 2333. 2584. (7. 5... 10. 2) R. A. 4' 38" 8' Decl. + 66 19' 1907.578 I22?2 I2?00 .581 122.0 11.99 .638 I2I.4 H.96 I9IO.20 211. 46.46 C and D (11.2) 1009.859 307?8 10745 09.933 307.5 10.55 10.678 306.8 10.63 1910.16 307.4 10.54 A and DM (10) 637 1909.859 23947 77"74 09-933 239.36 77.68 10.678 239.40 77.72 1907.60 I2I.9 ".OS Unchanged. 2339. A. G.82. (9. 4... 9. 6) R. A. 4' 38- 48' Decl. + 66 24' 1906.813 i2i?6 26^03 7.581 121.3 26.54 7.638 121. 2 26.60 1910.16 239.41 77-71 No other measures of these stars. They make the principal part of h 332; the other stars small and scattered. For the distant star the meridian positions give: 1875 23g8 77^9 A. G. Lcip. 2363. 2599. (8.0... 9.3) R. A. 4" 42 24' Decl. + 44 46' A and B 1907-638 336?! io?45 .657 336.1 10.55 791 335-6 10.25 1907.34 "1-4 26-39 No motion. 2346. H 27 . (9.4..- 9-5) R- A. 4" 39" 37' Decl. -5 27' 1910.678 si?o7 3^44 .701 S'.io 39.59 720 50.83 39.05 1907.70 335.9 10.42 No change since 2. 1910.70 51.00 39.36 128 Burnham: Measures of Proper Motion Stars A and C (13.5) 1907.791 2p?6 No other measures of C. 17-77 2379. HVI.83. (7.0... 8.5) R. A. 4" 48 m 50" Decl. + 6 44' 1912.675 755 .791 4:20 4.08 4.18 95^58 95-73 96.09 1912.74 4-15 95.8o Herschel's distance of 8o''g7 in 1783 would seem to be much too large. The only other measure is my own in 1900. Further neasures are required to show whether there is any con- iiderable proper motion. The place given in the General Catalogue from Herschel is in error; it should be as given here. 2383. p 552. (6. 9... 10. 2) R. A.4 h 45 m 4 s Decl. + 13 27' AB and C (13.0) 1906.796 213?! 44^97 .006 212.8 44.93 .964 213.0 45.11 1906.89 213.0 45-00 No sensible proper motion in the close pair. 2415. O2oo. (7.0... 9.0) R. A. 4" 48 25' Decl. +8 24' A and B 1909.112 .128 344o 344-8 i?90 1.83 1909.12 344-4 1.86 A and C 1909.071 .112 949 95-1 38:01 38.24 1909.09 95.0 38.12 C and D (12.2.. .13.0) 320?5 u".6s 320.1 11.85 1909.071 .112 1909.09 320.3 11.75 No other measures of the small stars. Closely preceding this is another pair not previously seen. This is DM (8) 793; the magnitudes are 8.3 and 13.0. 1909.071 .112 .128 2594 257-3 260.3 2'73 2-59 2.76 1909.10 259.0 The place of this (1880) is: 2.69 R.A. 4" 46 43') Decl. + 8 21' [ 2424. H 2243. (10.0.. .10.0) R. A. 4" 49 m 23' Decl. 5 2' 1909.722 -763 .780 M76 148.0 149.4 5-48 5-93 1909.75 148-3 5-70 No other measures. About 25' distant nearly / H 2243 is h 336". h 336 and SD (5) 1096 1909.722 223?7o I54''io .763 223.58 154-29 .780 223.37 155-00 1909.75 223.55 The only earlier measure is : 1886.97 223?4 I55"i5 I54-46 Lv. 2426. o" Orionis. f5 553. (5.O...I3-5) R. A. 4" 49'" 37' Decl. + 13 19' 1912-675 .717 -755 498S 49.66 49-85 31-95 31-58 31-75 1912.71 49-79 31.76 The proper motion of the principal star is : Auwers o"oo7 in 241 ?9 Boss .0.102 in 233.3 From the four {5 measures of the faint star on ten nights (1877-1912) the corrected proper motion of o 2 Orionis is: 0:097 in 248? 3 2432. 62 Eridani. Sh 48. (5. 6... 9.0) R. A. 4" 50 30' Decl. 5 22' 1909.722 763 933 74-57 74-58 74-53 66:37 66.46 66.20 1909.81 74-56 66.34 The proper motion of 62 Eridani is uncertain : Auwers o'JoiS in 3o6?4 Boss o.oio in 245.9 2433. 99 Tauri. P 1045. (6.1... 12. 3) R. A. 4" 50 m 32' Decl. + 23 46' A and C (13.0) 353?oo I03''20 353.27 103.84 352.67 103.62 1912.755 793 .810 1912.78 352.93 103-55 129 Burnham: Measures of Proper Motion Stars No other measures of this star. The proper motion of 99 Tauri is uncertain : Auwers o"o2i in 238^4 Boss 0.026 in 167.6 The following star (98 Tauri) was measured by mistake in the first instance for 99 Tauri. 98 Tauri. (6.0... 13. 7) R. A. 4" 50 49* Ded. + 24 53' A and B 1912.791 358?o 4i?6i 793 356.8 42.19 .810 357.7 41-51 1912.80 357.5 41.77 A and C (10.3) 1912.793 289?43 94^46 .810 J.03 94.84 1912.80 289.23 94.65 The proper motion of 98 Tauri from the star catalogues is given : Auwers 07051 in 163^0 Newcomb 0.069 >n 152.5 Boss 0.067 in 153.5 2435. o> Aurigae. 2 616. (4.0... 7. 9) k 5i m 6 Decl. + 3743' 164^48 164.96 164.56 A and C(n.s) 1912.675 233?22 695 233-50 7'7 233-58 1912.69 233.43 164.67 For the proper motion of to Aurigae. In most of the star catalogues this is designated as 4 Aurigae only. For the motion we have: Auwers o'ooxj in I78?6 Boss 0.115 in 154.4 2442. 2624. (8. i... 8. 6) R. A. 4' 51" 44' Decl. s56' 1906.796 .906 88? 4 88.6 89.2 28757 28.44 28.54 1906.88 No change since 1831. 88.7 28.52 2446. 2619. (8. 7... 8. 7) R. A. 4' 52 5' Decl. + 50 5' 1907.638 I26?2 .657 127.2 .769 124.5 1907.69 126.0 4-47 4-57 4-55 The four sets of measures by 2, A, A and P (1830-1907) give for the apparent motion of B : o"o24 in 234?4 This proper motion is as likely to be in one component as the other. 2450. II 2244. (8. 6... 9.0) R. A. 4" 52 m 16' Decl. + 69 12' 1908.939 9-589 9.666 i6 5 ?35 165.77 165.93 io6"go 106.76 106.92 1909.40 165.68 106.86 No early measures. These stars are Groombridge 902 and 903. The proper motions in that catalogue are : A o"o24 in 178^7 B 0.016 in 131.8 2451. 2 618. (7.0... 7. 3) R. A. 4" 52 18' Decl. + 62 54' The proper motions are given by Porter : A 0^317 in is?3 B 0.291 in 23.4 Of course the motions are exactly the same, as there has been no change since 1831. 1908.939 9.589 9.666 B and C 183^83 183.88 184.05 87^3 87.02 87.14 1909.40 183.92 87.06 There being no relative motion, I have connected a third star II. 2m. 2456. 2 626 rej. (8.0... 10.5) R. A. 4" 53 m 5' Decl. + 10 13' 1910.666 .678 .720 241?! 241.5 241-3 24.12 23.87 1910.69 241.3 No early measures for comparison. 24-13 2480. ii Camclof. 2 13, App. I. (5.0... 6.0) R. A. 4" 55 43' Decl. + 58 48' B and C 1908.920 i8?6s I73"58 939 -''71 1008.04 18.18 18.42 174.02 173.84 173.81 130 Burnham: Measures of Proper Motion Stars C and D (10.4.. .12.9) 1908.939 8?8 i&'.22 .974 9-3 16.09 2556. H 3268. (10.6... 10. 9) R. A. 5" 3 46" Decl. + 16 22' 1910.627 267?6 9"74 .678 265.0 9.88 .780 266.8 9.67 1908.96 9.0 16.15 The prior measures are : 1879.16 i86o I73''43 m Bl. 1879-71 17-95 172.59 m Bl. B is 12 Camelopardali. There is little or no relative change since 1836 and, therefore, the proper motions are really the same. For A we have : Auwers o"ois in 2is?S Boss 0.007 in 108.4 For B: Auwers o"oi2 in I94?5 Boss 0.039 m 166.2 2495. 9 Aurigae. P 1046. (S.5---I2-7) R. A. 4" S7 ra 17' Decl. + 51 26' A and C (9.1) 1908.939 6o?6s 89"8o 8.974 61.13 89.89 9.071 61.23 89.79 1910.69 266.5 9.76 The components of H 3268 form a part of h 348; mostly small stars. No other measures. 2558. ^ 629. (8. 2... ii. 2) R.A.s''4 m 4' Decl. + 83 18' 1907.807 6?7 15^70 8.636 7.8 16.01 8.652 6.7 15.74 1908.36 7.1 15.82 The proper motion of the principal star from the five positions by 2, A, O2, A and (5 (1832-1908) is : Measures 0^087 in 241^0 Greenwich 0.054 in 243.4 2568. H 3269. (9. 2... 11. 2) R. A. 5" 5 4' Decl. + 16 36' 1910.678 62?o I9"82 .780 61.2 19.75 1908.99 61.00 89.83 C and D (13) 1908.974 I25?8 47"6g 9.071 124.8 47.65 1910.73 61.6 19.78 Closely following H 3269 is h 349, with several small pairs, one of which was measured for H 3269: 1910.627 72^8 23^47 ii. o... 11. i The principal star of H 3269 is DM (16) 721. On the night of Nov. 18, 1909, comet Halley passed through h 349- 2579. H 2253. (8. 3... 12. 8) R. A. 5" 6 m 37" Decl. + 51 49' A and B 1908.766 23?8 26" 10 .769 23.4 26.30 .788 25.0 26.28 1909.02 125.3 47.67 C is DM (51) 1026. As this appears to be moving with AB, I have connected a fourth star. The proper motion of A is : Auwers o"i6g in ioo?5 A. G. Harv. 0.146 in 192.9 Boss 0.178 in 184.9 Porter 0.171 in 192.3 2515. H 3265. (9. 6... 9. 6) R. A. 4" 59 55' Decl. + 36 54' 1910.739 136^5 15^12 .760 136.3 15-04 .780 136.9 15-16 1908.77 24.1 26.23 A and C (9.6) 1908.766 io?9 51:87 .769 10.6 52.00 .788 10.5 52.25 1910.76 136.6 15.11 The components of H 3265 are among the brighter stars of h 344. The only DM stars are (36) 1010 and 1012, respectively 9.2 and 9.0 m. There is a 12.5 m star from A, 22?8:is"5. There are other pairs in the group, one of which was measured by mistake for H 3265 : 1910.780 62?9 8"52 1908.77 10.7 52.04 The principal star is given a small proper motion : A. G. Alb. 0^059 in 90 131 Burnham: Measures of Proper Motion Stars 2591. 14 Aurigae. 2653. (S.O...II.Q) R- A. 5" 7 36' Decl. + 32 33' A and B 1908.766 3S2?7 11*19 769 3S2.7 10.98 788 353-8 11. 10 2605. P Orionis. R.A.5"8 ra 47< Decl. 8 20' A and D (13.5) 1912.755 o?07 44^7 .810 0.40 44.67 .813 1.02 44.71 1908.77 353-1 11-09 A and C (7. 2) 1908.766 225?2 14*42 .769 224.4 14-50 .788 224.5 14-67 1912.79 0-50 44.72 From the p" measures of the faint star on ten nights (1878- 1912) we have for the proper motion of |3 Orionis: o"o22 in IO3?9 1908.77 224.7 14-53 A and D (10.3) 1908.747 320?97 184714 .766 320.78 183.97 .769 320.53 183.73 changed, but the small star is not easy to measure, and the motion is small, and therefore the measures should be con- tinued. The results from meridian observations are singularly discordant in amount as well as direction: Auwers o!'oi8 in 293?2 Newcomb (F. C.) o.ooi in 97.7 1908.76 320.76 183.95 The only prior observation of the distant star is : 1880.50 320?43 184*52 2 n Bl. According to Auwers the proper motion of the large star is nearly all in Decl.; while the measures of AB and AD agree in placing it principally in RA. A continuation of these positions should give the real motion, which is certainly much larger than the meridian value. Measures of AB 0*040 in 291^6 Newcomb (Stand.) 0.007 in 213.3 Boss 0.002 in 124.0 2606. 2667. (7-5... 9.0) R. A. 5" 8 m 52' Decl. 7 13' 1908.750 3i4?5 4?04 11.088 315.0 4.17 Measures of AD 0.042 in 258.5 Auwers 0.014 in 334.1 Boss 0.015 in 305.4 2597. a Aurigae. HVI-3O R. A. 5" 7 49' Decl. + 45 53' A and F (10.0) I9II-793 I4443 I45"76 .813 144-57 145 80 1909. gj 314.7 4.10 No change. 2627. X Aurigae. 2 3, App. II. (4. 8... 13.5) R. A. 5" 10 42' Decl. + 39 59' A and D (8. 7) 1908.709 545 138*42 .7" 5-6o 138.35 .728 5.23 138-17 .832 144.37 145.98 .835 144.10 146.03 .870 I44-38 145.64 1908.72 5.43 138.31 A and C (12.2) 1911.83 144.37 145-84 1908.769 236.5 34-!7 .824 235.1 33.93 This position when compared with that of O2 from measures on 27 n (1854-1911) should give the proper motion of the bright star with the highest degree of accuracy. 0*414 in i6s?6 This will be confirmed later when the nearer and fainter stars are sufficiently measured. Auwers 0*435 in I7O?3 Newcomb 0.438 in 168.0 Boss 0.437 in 168.7 1908.80 235.8 34.05 My three sets of measures of the small star C (1879-1008) give, as they should do, practically the same value of the proper motion of the bright star as that given by the measures of AD: Measures of AC 0*852 in 140^8 Measures of AD 0.856 in 140.6 Auwers 0.833 ' n I 4 I -9 Newcomb 0.845 ' n 141.0 Boss 0.843 in 141.1 132 Burnham: Measures of Proper Motion Stars 2634. 2678. (8. 3... 8.8) R. A. 5" ii m 17' Decl. + 4 33' A and B 1908.709 972 3?45 .884 99.2 3.35 Another set of measures a few years hence will settle the matter. There is a third 14. 5m star about the same distance from A ; BC = 99^4 : 14". 2680. 2691. (8. 5... 9.0) R. A. 5"i5 m 2r Decl. + 31 3' 1908.747 300?2 25*66 .750 299.8 25.56 .766 300.0 25.47 1908.80 98.2 3.40 A and C (n.o) 1908.709 338?8s 7s:'S9 884 338.40 75.63 .898 338.63 75-14 1908.75 300.0 25.56 No other measures since 1866. 2690. a Aurigae. 888. (6.0. ..12.0) R. A. 5" i6 ra 30' Decl. + 37 16' A and B 1908.750 i6s?5 8"59 769 165.7 8.59 .974 166.8 8.46 1908.83 338.63 75.45 No change in the 1 1 m star since 1893. 2654. A 53- (8.5... 12. 5) R. A. 5" 13 6' Decl. 3 12' A and B 1906.796 46?5 4"30 .906 48.2 4.87 928 45-9 4-43 .964 46.4 4.61 1908.83 166.0 8.55 The small star appears to be moving with the other, if there is any proper motion. The meridian positions prove nothing. Auwers 0^027 in 272?2 Boss 0.027 in 182.5 2699. 26g8. (6.2... 7. 7) R. A. 5" 17 14' Decl. + 34 45' 1908.766 346^9 3 i "22 .824 346.4 31-09 .843 346.9 31.08 1906.90 46.8 4.55 A and C (10.1) 1906.928 i82?4 I96':6i .964 182.4 196.80 1906.95 182.4 196.70 Common proper motion in AB. Kustner o"6oo in 77?5 Distant star for an independent value. 2658. 2684. (8.0... 9. 8) R. A. 5" I 3 m 24' Decl. + 44 58' 1907.657 I39?6 i?4i 7-791 137.2 1.62 8.214 140.4 1-37 1908.81 346.7 31.13 Not fully measured since 1866. 2704. 2699. (7. 3... 8.0) R. A. 5" I7 m 26' Decl. + 37 56' 1908.788 343?7 8':6s 8.845 344-5 8.72 9.109 344.0 8.85 1907.89 139.1 1.47 No motion. 2660. See 50. (5.0... 12. 8) R. A. 5" 13 30' Decl. 18 16' 1907.022 2200 3I?32 8.159 221.6 31.77 8.750 221.7 32.16 1908.91 344.1 8.74 Probably unchanged. 2727. 8483- (7.0. ..8.6) R. A. 5" 20 9' Decl. + 33 41' A and B 1907.848 50^82 o6"o2 8.025 50.38 06. 01 8.044 50.50 95.96 1007.98 221. 1 31.75 Unfortunately the original position of 1897 depends upon a single night, and therefore cannot be safely used with regard to relative motion. If this measure is correct, the large star has a proper motion of i"i6i in io6?7, which is more than three times the movement from meridian positions of o"356 in 90. 1907.97 50.57 96.00 133 Burnham: Measures of Proper Motion Stars A and C (10.5) 1907.848 340?92 103^48 8.025 340.77 103.23 8.044 340.87 103.49 1907.97 340.85 103.40 A and D (10.5) 1907.848 318^63 io8?42 8.025 3i8.77 108.33 8.044 3i9-io 108.93 1907.97 318.83 B and b (i3-5) 1907.848 3498 108.56 iSl'68 The proper motion of A, derived from the several measures of B, C, and D, is as follows : AB R. A. o"os i Decl. o" 194 AC 0.033 0.207 AD 0.057 0.204 0.047 0.2O2 Therefore the corrected movement of the principal star is : 07207 in 193?! From the star catalogues: Stumpe 07192 in 204^2 Porter 0.171 in 180.0 Kustner 0.182 in 187.9 2729. 115 Tauri. 02107. (6.0. ..10.8) R. A. 5" 20 10' Decl. + 17 51' 1908.769 9.109 A and B 306? i 307-1 10.09 1908.94 306.6 A and C (12.5) 1908.769 3394 9.109 342.1 10. oo 9755 9-73 1908.94 340.7 9.64 The proper motion of A is doubtful: Boss o7oi6 in 148^5 Auwers 0.016 in 259.2 2732. H 699. (10.8... 11.2) R.A.s20"2i' 1911.720 736 215-4 215-7 978 1 9.72 2IS-5 9.76 No other measures. H 699 is in the field with, and closely following, h 354. 2738. 2704. (7. 2... 9. 5) R. A. 5" 20 48' Decl. + 69 34' 1912.638 .675 .678 15-3 14.8 15-0 20:29 20.38 20.25 1912.66 15.0 20.31 No proper motion found for the principal star in the several catalogues examined. This Is given from the measures of the small star with a high degree of accuracy. The four sets of measures by 2, A and on 13 n (1831-1912) give for this motion : 07084 in 348?2 2745. 2711. (7. 5... 9. 2) R. A. 5" 2i m 38' Decl. + 54 35' B and C 1908.613 245?so ioo:'73 .636 .671 245.43 245.40 100.66 100.50 1908.64 245-44 190.63 C and D (10.0.. .13.1) 1908.636 305?6 15748 .671 309.9 15.37 .689 307.6 15.38 -750 306.8 15.19 1908.69 307.5 15-35 The large common proper motion of A and B is well known. Of the other stars the only prior measure is : 1881.46 243?oo 197708 2n Bl. The two positions give for the annual motion of AB : 07386 in 192^3 Further measures are needed before this can be substitute for the meridian value. Some of the prior values are : Porter 0*434 > n 200^9 Kustner 0.425 in 198.3 The small star C is an exceedingly difficult and close pair. On only one night could it be seen well enough to properly measure. C and c (10.5.. .10.7) 1908.750 I736 o:'59 2751. 118 Tauri. 2716. (5.8... 6.6) R. A. 5" 2 i m 53" Decl. + 25 3' A and C (12.0) 1912.675 .695 .717 99-15 99.06 141.90 141.47 140.51 1912.69 98.82 141.29 134 Burnham: Measures of Proper Motion Stars Very little change in the large stars. For the proper motion of A we have : Auwers 0*019 in 163^2 Boss 0.040 in 149.1 2830. 2745. (8. 5... 8. 7) R. A. 5" 28 57' Decl. 6 5' A and B 1912.810 346?8 28"73 813 345-7 28.75 .867 346.7 28.56 2764. H 701. (7. 2... 10. 9) R. A. 5" 22"' 50" Decl. + 31 25' 1912.675 136^52 35"o2 1912.83 346.4 28.68 A and C (9.0) 1912.810 288?93 78"o6 .813 289.22 77.69 .867 289.13 77-79 .717 136.83 35-52 1912.83 289.09 77.85 1912.69 136.72 35.12 The only other measure is that given in Part II of the General Catalogue. 2770. 2718. (7.2... 7.2) No change in AB since 1831. C is SD (6) 1230; no other measures. 2846. H 3276. (10.5... 10. 7) R. A.5 h 29 ra 4i' Decl. + 16 59' 1909.859 65 6 26". 17 09-933 65.6 26.61 10.128 65.3 26.19 A and B 1910.605 74o 7"58 .608 74.0 7.62 .627 72.6 7-6o 1909.97 65.5 26.32 About this time (1909.85) the Halley comet passed very near. There is a large error in the measures of distance in 1904. 1910.61 73.5 7-6o No sensible change in AB. A and C (9.6) 1910.605 i8s?2i ii8"87 2853. Weisse 9. (8. 5... 9. 8) R. A. 5" 30 m 39' Decl. 13 54' 1906.006 isi?9 44^50 .964 151.8 44.28 .608 185.07 118.47 .627 185.15 119.08 1906.93 151.8 44.39 1910.61 185.14 118.81 The only other position of C is : 1881.47 184^56 H9?98 2n Bl. These measures imply a proper motion of A: o"oss in 141 ?s If these positions have the usual accuracy, the motion from meridian observations is erroneous : 2871. 2755. (8. 3... 9.0) R.A.s h 3i m 52' Decl. + 23 13' A and B 1907.731 316?! 6"27 .769 3i6.5 6.15 .772 314.7 6.02 Groombridge o!'o42 in 224?4 2809. Espin 63. (8. 4. ..ii. 8) 1907.76 3IS-8 6.15 No change in these stars. A and C 1907.769 33?os I46?44 772 33-13 146.51 R. A. 5 b 27 m 15' Decl. + 41 13' I97 -73 1 I7 2 9 8"o2 .769 173.9 8.10 .791 171.6 8.09 1907.77 33-09 146.47 C and D (8.0. ..10.5) 1907.769 176? 12 79^6 .772 175-80 78.97 1907.76 172.8 8.07 1907.77 175-96 79.i6 135 Burnham: Measures of Proper Motion Stars The only prior measures of the distant stars are : AC 1879.85 34?3 M6"oi an CD 1879.85 175.5 79-H an 2888. H 2274 R- A. 5' 33 m S3' Decl. + 55 44' This could not be identified with absolute certainty. There is no lack of small pairs, but none fully answering the descrip- tion. H 2274 should be in, or closely preceding, h 364. 2901. 2771- (9.0... 9.2) R. A. 5" 34 42' Decl. + 19 29' 1911.947 12.046 234-60 24-03 23.88 1912.00 234-75 23-9S One of these nearly equal stars has a small proper motion. The apparent movement of A from the measures (1829-1912) is: 07030 in 240^8 To show whether or not there is any motion in B, I have connected a 13 m star : B and C 1911.947 12.046 209?54 209.45 100*43 100.49 1912.00 209.50 100.46 2907. S 773 R. A. 5" 34 m 55" Decl. + 33 19' A and B (Doolittle) 1910.627 254?8 I9"84 .931 256.0 1910.78 255-4 A and CCS 773) 1910.627 2i8?5 .720 217.4 .931 219.1 20.00 19.92 27.17 26.70 1910.76 No change in AC. 218.3 26.99 2912. Kr 27. (8.6...io.o) R. A. 5' 35" 38 1 Decl. + 56 45' 1907.657 731 791 330.5 328.5 2709 2.26 2.13 1007.73 No change since 1890. 328.9 2.16 2915. 2769. (8.0... 10. 2) R.A. 5 1 '35 m 45 8 De A and C (10.8) 1909.840 .859 .936 96.17 95.82 137.13 136.54 1909.88 95.96 136.90 The other position is : 1880.60 95?57 136^04 3n The proper motion of A is very doubtful. A. G. Harv. o"o69 in 360 2923. 2 782. (7. 8... 8.3) R. A. 5* 36 47' Decl. o 2' A and C (n.i) 1909.859 i64?i4 131^37 10.109 164.45 131.96 Bl. 10. 128 164.50 I3L74 1910.03 164.36 131-69 Observed for proper motion of A; no other measures, of the Struve stars has a motion of about o7o6. 2924. 2779. (8.o...io.o) R. A. 5" 36 48' Decl. + 27 41' A and C (11.7) I9IL947 3577 5i"95 11-950 35-70 52-35 12.046 35-20 51-97 I9".98 35-56 52-09 For the proper motion of A; no other measures. Battermann 0^033 in 3O7?o 2936. O2 115. (7. i. -.7- 9) R- A. 5" 37 40' Decl. + 15 i' AB and C (n.o) One I9i i. 775 .813 .835 256.60 256.70 92.82 92.87 1911.80 256.56 yj.S-S As the early positions of the faint star depend upon a night, the deduced motion of AB might be subject to error. Later measures will correct this. The proper motion of AB is given: Porter 0*035 in 135:4 single some 136 2941. 2 785 R. A. 5" 38 m 29' Decl. + 25 52' The pair measured here is the one in the field with 2 785 observed by Tarrant. A and B (10.0.. .11.7) 1911.644 250?6 6". 1 7 .720 252.3 5.86 755 253.3 Burnham: Measures of Proper Motion Stars 6. 20 1911.71 252.1 6.08 The only other measure is that given in the General Cata- logue. A and 2 785 (A) 1911.644 i89?83 201*40 2943. 2 789 re/. (7.0...IO.O) R. A. 5" 38 m 42" ' Decl. + 3 57' This is in h 368 (=M78). No change in AC since 1879. The following, not given in the General Catalogue, is derived from A R. A. and Decl. : 1891.20 203?2 51*36 m Eng. 2968. i Aurigae. P 192. (5.0... 12.0) R. A. 5" 40'" 52' Decl. + 39 8' A and B 1910.777 35235 1911.947 12.008 12.046 149-3 149-3 149 -5 I7.SO 17.04 1912.00 149-4 17-33 The only other measures are of recent date. 2945. 2787. (8. i... 8.5) R. A. 5" 38 m 50" Decl. + 21 16' A and C (13) 1910.933 10.971 11.720 41.1 39-4 12.72 12.88 12.66 1911.21 39.6 No other measures of this companion. 12.75 2959. 29 Camelopardali. H IV. 25. (6. 7... 9. 7) R. A. 5" 40 19' Decl. + 56 53' 1911.622 .625 .644 131-2 130.8 25.14 24.86 25.00 1911.63 130.8 25.00 The only other measures are of late date. The proper motion is small and uncertain. The measures of the small star should be continued. Auwers o"o27 in 244?o Boss 0.007 in 145-7 2964. P559- (9 5... ii. 5) R. A. 5" 40 36" Decl. + o 2' A and C (9.0) 1909.782 20i?95 50759 09.859 202.40 50.31 10.109 201.59 50.56 1909.92 201.98 50.49 .893 931 352.21 352.63 39"38 39.o8 39.56 1910.87 352.40 39-34 A and C (12.0) 1910.720 34? 10 48"53 777 33-52 48.21 .835 34-0 1 48.82 1910.78 33-88 48.52 From the measures of the two companions (1877-1910) we have for the proper motion of the large star : AB R. A. 0*046 Decl. 0*019 AC 0.036 0.004 Hence the proper motion of T Aurigae is : 0*042 in 254?3 From meridian observations : Auwers 0*043 in 239?4 Boss 0.036 in 223.2 2969. 133 Tauri. H 3279. (5. 4... 12. 4) R. A. 5" 40 54" Decl. + 13 51' A andB 1911.775 297?5 17*69 .813 .835 297-8 297.8 17.85 17.84 1911.81 297.7 17.79 A and C (12.2) 1911.775 182?! 24*87 .813 183.1 24.80 .835 182.0 24.96 1911.81 182.4 24.88 The proper motion of 133 Tauri is too small to be detected, even with the micrometer, in the time involved. The meridian results are still more uncertain. Auwers 0*002 in I24?5 Boss 0.022 in 126.6 2974. (3 561. (7.0... 13) R. A. 5" 4i m i8 s Decl. + 12" 22' 1909.744 .818 .859 3.0 1.8 2.8 19.12 19.07 1909.81 2.5 Very little change, if any, since 1878. 19.08 137 Burnham: Measures of Proper Motion Stars 2978. 2791- (8.7... 9.3) R. A. s" 41" 42' Decl. + 39 32' A and C (10.1) 1909.782 2I3?52 60^72 .818 213.44 60.35 933 213-06 60.47 1909-84 213-34 60.51 Evidently the 2 star has no sensible proper motion. 1880.54 2i2?63 60*74 2n Bl. 2981. 8500. (8. 5... 8. 5) R. A. 5' 41 53' Decl. + 32 56' 1911.947 11.950 12. Oil 89.70 89.42 59"76 59-91 59-88 1911.97 89.61 59-85 2996. v Aurigae. H V. 90. (4. 2... 9. 5) R. A. 5" 43 10' Decl. + 39 7' 1910.971 11.088 i i . 104 206.27 205.70 54"58 54-72 54-49 1911.05 206.10 54-6o No certain relative change. The brilliant cluster, h 369, is !4 / and 25' s. 2984. 2796. (6.9... 8.0) .R. A. 5" 42 7' Decl. + 31 45' A and C (10.7) 1909.818 324^50 207*50 935 324-35 207.50 953 324-42 207.61 Bl. Compared with my measure of 1878, the proper motion of the large star is : 0*020 in 291 ?9 The annual change from transit positions is uncertain : Auwers 0*030 in 3O4?8 Boss 0.007 in 322.2 Newcomb 0.013 in 353.4 3000. H 7i2. (9.3-.. 9-7) R. A. 5" 43 21' Decl. + 6 3' The following component is obviously the smallest. 1906.706 82?5 8"86 1509.90 324-42 207.54 No motion. 1880.51 324^2 4 207*48 2n 2990. 2794. (8.5... 10.2) R. A. 5" 42 39' Decl. + 48 42' B and C (12.0) 1009.782 .818 309?27 309.53 35"6i 35.29 933 309-I3 .15.10 1909.84 309.31 35.36 Probably unchanged. 1880.60 309^85 36*14 3n Bl. A and DM (48) 1313 1909.818 259?I3 116*95 933 259.04 "7.25 1909.88 259.08 117.10 From meridian observations: 1875 258^3 119*0 A.G.Bonn. 7.022 83.2 8.80 1906.91 82.8 8.83 3006. 2 802. (7. 9... 8. 5) R. A. 5" 44 6* Decl. + 40 7' A and C (9.8) 191*70 191.64 1909.782 .818 936 57-50 57.50 57-32 I9L57 1909-85 57-44 191-64 No change in AB. C is DM (40) 1438. 1880.53 583i 192*10 2n 3023. O2 120 rej. (6. 7... 7. 8) R. A. 5" 45 52' Decl. + 53 26' Bl, 1907.657 .711 731 136.27 136.55 44"97 44.91 45-04 1907.70 136.31 44-97 The distance is increasing. No proper motion found in the catalogues examined. 3029. P 95- (8.0... 12.0) R.A.5 11 46 ni 9' Decl. 7 20' I9II-775 .832 942 2972 296.7 295.6 14*02 13.95 13.73 1911-85 296.5 13.90 No material change. About 12' j is h 370; small, and without any definite nucleus for measurement. 138 Burnham: Measures of Proper Motion Stars 3037. S 502. (7. 4-- -7-8) R. A. 5" 47 m 56' Decl. + 13 50' 1909.744 I30?70 46"iS .818 130.53 4S-Q6 .821 130.33 45.64 .838 130.70 45-37 The measure of 1783 is obviously largely in error. The three positions by (? (1879-1911) give for the proper motion of the bright star : 0^062 in 289^2 It is not probable that the faint star, B, has any sensible movement. There is no other star near it. Auwers o"o6o in 263^3 Newcomb 0.040 in 261.3 Boss 0.047 in 263.9 3073. f 1055. (6.6... II. 5) R. A. 5" 5i m 32' Decl. + 44 35' A and C (9.2) 1911.931 32903 33'-29 11.950 328.68 33.31 12.008 329.20 33-01 1909.81 130.56 45-78 Certainly fixed. 3039. 2815. (8. 2... 10. 4) R. A. 5" 48 I2 1 Decl. + 5 19' A and C (ii.o) 1908.843 307?47 87':8o .884 306.75 88.26 .898 307.43 87.50 1908.87 307.22 87.85 No measures since 1864. Some change in distance is implied, but the early measure is on a single night. 3047. 2 816. (6. 2... 8. 7) R. A.5 h 48 m 3o' Decl. + 5 50' 1906.796 289^8 4?'so 7.022 290.9 4.30 7.120 291.1 4.31 1911.96 328.97 33.20 The distant Herschel companion appears to have the same proper motion as the large star. The values of this movement from meridian observation are : Auwers o"os8 in 222^6 Boss 0.051 in 214.5 Kustner 0.057 in 238.6 3074. 6 Aurigae. O2 545- (3-O-.-7-5) R. A. 5" 51 32' Decl. + 37 12' A and C (10.5) 1910.971 295?io 47"6o 11. 088 295.13 47-22 11.104 295.00 47.66 1906.98 290.6 4.37 No change since Struve. 3048. a Orionis. R.A.5" 4 8 m 4o' Decl. + 7 23' A and D (13.5) 1911.947 346?97 76"24 12.046 346-20 75.97 12.162 346.80 75.84 1911.05 295.08 47.49 A and D (9.5) 1910.971 349-97 I29l'82 11. 088 349-75 128.81 11.104 349-70 129.83 1912.05 346.66 76.02 From four positions on iin by and Doo (1877-1912), the proper motion of a Orionis is : o':o68 in 39?3 A continuation of the measures of this and two nearer faint companions will confirm this value. From meridian observations we have : Auwers 0^023 in 27^5 Newcomb 0.022 in 72.1 Boss 0.029 in 74.2 3064. P Aurigae. HVI.88. (i.8...io.o) R. A. 5" 50 43' Decl. + 44 5& 1911.622 39?55 184768 625 39-45 184.15 644 39-51 184.99 -663 39-78 184.65 1911.05 349-8i 129-49 From all the measures of both companions (1840-1911), the corrected proper motion of Aurigae is : AC R. A. + orosg Decl. o':o66 AD 0.043 0.076 + 0.041 0.071 Therefore the annual movement is : o"o82 in 150^0 From the star catalogues: Auwers o".ogo in 153?! " Newcomb 0.107 in 148.0 Boss 0.105 >n 149.1 1911.64 39.57 184.62 139 Burnham: Measures of Proper Motion Stars 3079. 59 Orionis. H V. 100. (6.1... 9. 7) 3095. 2 827 re j. (8. i. ..io. 4) R. A. 5" 52 io' Decl. + i " 49' R. A. 5" 54"' o' Decl -o 3 i' I9II.775 204?53 37''04 1906.796 222? I 25'.'66 .813 205.33 36.78 .906 222. 25.72 .815 205.35 36.79 .964 222.4 25.91 1911.80 205.07 36.87 1906.89 222.2 25.76 The proper motion, if any, is very small and uncertain : No other measures. Auwers 0*015 in I36?3 Boss 0.013 in 159.4 The measures of the companion show that the principal star has no sensible movement. 3108. 2 832 rej. (9 0...9.9) R. A. 5" 55" 38' Decl - 14 32' 1906.796 87?o 24*06 .906 86.7 24.24 3088. S 504. (8. 5... 8.6) .964 86.8 24.23 1906.89 86.8 24.18 R. A. 5" 53 m 19' Decl. 20 io' No other measures. There is a 13 m star nearer A : 1907.022 7o?o 3^46 ioo?s I27o Probably unchanged. The early measure by South is too large in distance. 3118. Z 836. (8.3. ..10.8) R. A. 5" 56 m 29' Decl . 2 22' 3090. 2825. (7. 8... 9.0) 1906.906 28?g I "64 R. A. 5" 53 ra 30' Decl. + 36 3 1' 7.102 26.2 1.49 1907.695 I457 7^89 7.120 25.0 1.79 .731 145.2 8.01 1907.04 26.7 1.64 .788 145.2 8.15 No clisncfc 1907.74 '154 8.02 No change. 3123. 2 834. (8.0 ..8.8) R. A. 5" 56 m 52' Decl. + 30 14' 3093. HIV. 48. (8. 6... 1 1. 9) 1007.695 3o8?4 22*96 R. A. 5" 53 m 48' Decl. + 23 20' -788 307.9 23.02 .848 308.0 22.62 A and B 1907-78 308.1 22.87 1911.720 259?o 3 i "30 755 259.3 3i.6o No measures since 1866. Fixed. 775 258.8 31-21 1911-75 259-0 31-37 The large change in distance apparent from Herschel's measure in 1783 is not likely to be real. 3127. 2 824. (8.0. . .10.0) B and C (12.0) R. A. 5" 57 44" Decl. + 76 32' 1911.720 2O7?3 s"9 1908.769 20i?3 i?6i .775 206.2 5.67 10.838 204.2 1.30 I A C IfiT T 7C '' < > 7 ^ 78 10.895 205.7 45 j y i i i / $ *\AJ / j / ** 1910.17 203.7 1.45 much smaller. Change in angle? No other measures since 1869. 140 Burnham: Measures of Proper Motion Stars 3130. 28 3 i. (8.7... 8. 7) R. A. 5" s8 m 18" Decl. + 68 o' 1908.636 75-7 ""76 652 75.7 11.88 .671 75-4 ii-77 3179. 2852. (8.7... 9.7) R. A. 6" 2 T Decl. + 7 23' A and C (9.3) 1908.862 28?5o 43*71 .884 29.00 44.01 .898 29.27 43.93 1908.65 75.6 ii. 80 No other recent measures. 3135. Skinner 2. (8. 2... 9. 5) R. A. 5" 58 43' Decl. I540' 1906.796 I7i5 5*14 8.063 172.6 5.32 8.159 172.1 5-24 1908.88 28.92 43.88 No other measures since Dembowski. 3186. 4 Monocerotis. P 17. (6. 5... 10.5) R. A. 6" 2 48' Decl. 11 8' A and B 1906.906 i8i?3 3?O2 7.102 184.8 3.24 7.791 182.8 3.03 1907.67 172.1 5.23 The only other measure is that given in Part I of the Gen- eral Catalogue. 3167. 2850. (8.5... 10.2) R.A.6"i m 24' Decl. 3 59' 1906.906 I7?6 i"88 7.102 20.5 1.98 1907.27 183.0 3.10 A and C (11.5) 1906.906 248^3 9709 7.102 247.9 9-ii 7.791 247.4 8.90 1907.27 247.9 9-03 The components appear to have a common proper motion. Auwers o"o29 in 84^2 3197. P 1242. (8. 6... 8. 8) R.A.6"3 m 42' Decl. 6 18' AB and C(=H 2298). (10.7) 1909.760 93?i5 43"8o 10.091 93-48 43.94 10.093 93-12 43.71 1907.00 19.0 1.93 No other recent measures. 3171. 2848. (7.3... 8.0) R. A. 6" i" 42' Decl. + 13 59' A and C (12.0) 1910.678 2o6?6 is?54 .720 295.3 15-28 739 295.6 15.20 1910.71 295.8 15.34 A and E (9.0) 1910.678 l83?o7 43?47 .720 183.50 43.11 -739 183.38 43.30 1909.98 93.25 43.82 The principal star of H 2298 is in h 381. The Herschel nebula IV. 19 is 2 m p and 4' s and surrounds the 9.5 m star SD (6) 1415- h 381 (star) and SD (6) 1414 1910.091 I92?55 88"23 .093 192.63 87.81 1910.71 183.32 43.29 The several components of 2 848 are some of the principal stars of h 379. No material change since Struve. 3176. O2 134. (7.0... 8.3) R. A. 6" i 54' Decl. + 24 27' 1910.835 i88?9 31^18 .838 187.5 30.85 .856 188.2 30.90 1910.09 192.59 88.02 3219. H 2301. (II.O...H.3) R.A.6"5"'43 1 Decl. + 5 28' 1911.164 353?g iooo .796 354-7 10.14 1910.84 188.2 30.98 In h 377; mostly small stars. No relative motion. For the principal star we have: A. G. Ber. o':o87 in 6p?9 1911.48 354-3 10.07 The components of H 2301 are among the smaller stars of h 384. The angle in the Hd measure of 1867 is erroneous. 10 Burnham: Measures of Proper Motion Stars 3229. 02 (App.) 70. (7.0. . .7.5) R.A.6 b 6 ra 49' Decl. + 24 i' 1910.971 11.107 11.142 I78?oo 178.00 177-97 "5.42 115-69 "5.71 1911.07 177-99 Perhaps diminution in distance. 115-61 3238. 2872. (6.0... 7.o) R.A.n 240?7 It is possible that we have here an excessively rare example of a small star with a sensible proper motion, of which only a few instances are known in the entire heavens. It is not probable that there is any very large error in the old value, considering the magnitude of the principal star; and still less probable that the faint comparison star is moving at all. There- fore, the explanation must be first looked for in errors of the micrometer positions. It may be suggested that the first measures belong not to AC, but to BC. In that case my measures reduced to BC would stand, 287?! i : 199732, which would still leave too large a change. To show hereafter whether there is really any motion in C, I have connected a third star: 1908.788 .826 .843 C and D (n.i) 164? 10 163.80 164.15 120-53 120.21 I2O.I7 1908.82 164.02 120.30 3239. f\ Geminorum. p 1008. (4. 2... 8. 8) R. A. 6" 7 38' Decl. + 22 32' 1906.966 200?6 ll'24 3241. 71 Orionis. H 2302. (s.3...n.o) R. A. 6* 7 46' Decl. + 19 12' A and B 202?53 28715 202.30 28.15 202.65 1907.865 7-997 8.000 1907.95 1907.865 7.997 8.000 202.49 A and C (11.3) 267?47 267.25 267.05 28.11 28.14 787os 77-43 77-39 1907.95 1907.865 7-997 8.000 267.26 A and D (10.8) 253^83 253.62 253.92 77.62 87.49 87.61 1907.95 253-79 87.61 The prior measures of AB are given in the General Cata logue. For the distant stars we have the following: AC 1886.23 264^92 8o774 2n Eng AD 1886.23 251.89 91.17 2n Eng A comparison of the Eng and (5 positions of the three con panion stars gives for the proper motion of 71 Orionis: AB R. A. ofo65 Decl. o7i66 AC 0.133 0.159 AD 0.116 0.179 0.105 0.168 Hence the proper motion of the large star is : 07198 in 2i2?o Other values from meridian positions are : Auwers Stumpe Porter Hedrick Boss 07203 0.283 O.222 0.213 0.223 213-4 203.2 212.5 204.3 205.9 3250. 2876. (8. 5.. .n.o) R. A. 6" 8 44- Decl. + 53 42' A and C (7-5) 1909.744 281^70 209739 10.049 281.65 209.48 10.128 281.83 209.19 281.73 209.35 C is Groombridge 1122, which is given a proper motion o7oi6 in 35o?6. 1875 28l?2 21074 1880.48 280.09 209.73 2n A. G. Harv. Bl. 143 Burnham: Measures of Proper Motion Stars 3267. 28;8. (7.2...ii.o) R. A. 6" io m 13' Decl. + 62 27' A and B 1908.747 330? 10 23^77 .788 330.75 23.89 3284. H 2307. (9. 2... 10. 6) R.A.6 h ii m 48" Decl. + 54 6' 1907.788 91 ?5 23^5 .791 91.4 23.34 .807 91.9 23.02 .804 331-63 23.87 1907.80 91.6 23.20 1908.78 330.83 23.84 rom the measures of AB the proper motion of A is : o"i29 in i82?6 A and C (11.2) 1908.747 68?io H4"8o .788 67.95 114-72 .804 67.85 114.98 Distance disagrees with prior measure. 3287. H 3845 R. A. 6" i2 m o' Decl. 22 40' 1907.022 I9?2 35^52 Comparing this with the measures by Doolittle in 1898 shows 1908.78 67.97 4.83 he other measures of AC are too discordant to be used for proper motion of A: 1880.22 69?23 H3"S7 in Bl 1880.74 68.32 112.07 m Bl. 3270. 2885. (8. 5... 10. 2) R. A. 6" io m 26" Decl. + 6 2' 1910.739 297?2 io''27 that the large star has a considerable proper motion. Further and later measures are necessary to give it a definite value. Porter 0^324 in I43?3 3289. 2882. (8.o...n.o) R. A. 6" I2 m 6" Decl. + 64 58' A and C (10.5) 1910.684 23?73 H9"56 .701 24.07 119.25 .703 24.08 119.36 .835 298.9 10.05 .856 297.2 9.69 1910.70 23.96 119.39 1910.81 297.8 10.00 i h 385, a coarse scattering cluster. 3277. 4 Lyncis. 2 881. (6. 4... 7. 9) R. A. 6" 1 1" 1 24' Decl. + 59 25' AB and C (ii.o) 1908.747 356oo ioo"oo -788 356-05 100.22 apparent change is impossible. 1880.48 I323 H9"35 2n Bl. 3303. O2(App.)74- (6. 7... 8. 6) R. A. 6" 13 12' Decl. + 25 15' A and B 1910.971 264^35 57"92 11.104 264.40 57-91 11.142 264.37 57.71 843 356.25 100.14 1911.07 264.37 57.85 1908.80 356.17 100.12 he previous measures are : 1879.25 35588 ioi"i4 in Bl 1879.71 355-68 100.38 in Bl No relative motion. A and o (11.9) 1910.971 289?33 4i':36 11.104 290.13 40.80 11.142 289.93 40.82 he measures of this star should be continued. The proper ion of 4 Lyncis is uncertain : Auwers o"o25 in 293?6 Boss 0.006 in 20.9 "here is a faint star near the close pair, not previously erved : AB and o (12.9) 1908.788 96?3 261'37 .824 96.3 26.45 .826 95.9 25.47 .843 97.2 26.26 1911.07 289.80 40.99 No other measures of the faint star. 3313. 8513- (7-2... 8. 5) R. A. 6" 14 4 s Decl. + 21 ii' B and C (12.0) 1910.971 84?9 I5"o6 11.104 86.5 14.90 11.142 86.1 14.98 1908.82 96.4 26.14 1911.07 85.8 14.98 143 Burnham: Measures of Proper Motion Stars If there is any proper motion, it seems to be common to the three components. The principal star is Piazzi VI. 62. A. G. Berlin oTioi in 270 3327. H 2315. (n. 7... n. 7) R. A. 6" 15 6' Decl. 7 14' 1910.933 11.796 3? i 3-4 6:50 6.41 1911.36 3-3 6.45 The only other measures are my own in 1901. H 2315 is in h 386, the principal star of which is SD (7) 1384. Most of the stars are 10 to 13 m. 3339. 2896. (8.3... 8.7) R.A.6M6-2I' Decl. + 51 56' A and C (10.9) 1910.684 32430 40*89 .701 323.70 40.71 703 323.92 40-64 1910.70 323.97 40.75 The proper motion given A from meridian observations seems doubtful from the measures of this star. 1880.48 324?42 40*36 2n Bl. A. G. Harv. 0*047 in 90 3349. SMonocerotis. 2 900. (4.0... 6. 7) R. A. 6' 17 25' Decl. + 4 39' 1911.775 796 .815 A and B 259 27-3 28.4 13*25 13.21 13.15 1911.79 27.2 A and C (12.2) 1911.777 254so .796 254.17 .832 254.67 13-20 93*42 94-30 93-43 1911.80 254.45 93-73 Large stars relatively fixed. No other measures of C. The proper motion of A is small and uncertain: Auwers 0*021 in 299?! Boss 0.012 in 255.9 Newcomb o.on in 325.7 3375. 2904. (9.0... 10.2) R.A.620-i6' Decl. + 51 51' A and C (8.5) 1910.684 92.60 237778 701 92.75 237.75 1910.69 93.67 237.76 Apparently no proper motion in either. 1880.59 92!30 237:24 3 n Bl. 3379. 2905- (8.0... 10. o) R.A.6 b 20 m 3i' Decl. + 40 12' A and C (10.5) 1908.884 I47?53 151*41 .898 147.73 151-52 .900 148.34 ISI.45 1908.89 147.87 151-46 From the earlier positions it is apparent that 2 905 has no sensible proper motion. The second is from the Astrographic Catalogue. 1880.48 1894.95 147.52 147-70 151*54 151.20 Bl Donner 3381. 2906. (8.3... 9-5) R. A. 6" 20 m 34' Decl. + 37 27' A and C (10.2) 1910.701 .720 739 141:20 141.17 140.83 155.58 155.62 1910.72 141-07 155-49 In the early measure the distances are discordant, and differ as much as 1*7, hence change is doubtful. 1880.60 I40?78 154:57 3n Bl. 3383. 15 Geminorum. Sh 70. (6. 8... 8. 2) R. A. 6" 20- 37' Decl. + 20 52' A and B 1911.720 204?45 29"oo 755 204.65 29.08 29.00 775 204.65 204.78 I9".7S 204.63 A and C(i2.8) 1911.720 775 3428 33-00 29.03 77*68 77-73 I9".75 34-09 77-70 The faint star for the proper motion of A. measures : Auwers 0:058 in 237?8 Hedrick 0.058 in 201.6 Boss 0.063 in 206.6 3402. ii Monocerotis. fJ 570. R.A.6'23"o' Decl. 6 57' A and D (5.0... 12. 5) 1911.796 546 25:72 11.942 55.1 25.82 12.046 56.9 26.06 No other 1911.93 55-5 25-87 144 Burnham: Measures of Proper Motion Stars The apparent change is very small, and later measures should be made. It is not likely that the faint star is moving with the others. The value of the proper motion is somewhat uncertain : Auwers 0*076 in 296^4 Boss 0.037 in 270.0 3418. Spi6. (8.5... 9.8) R. A. 6" 24 2" Decl. + 56 44' A and C (9.6) 1908.882 338? 18 55*80 .884 337-21 56.32 .898 337-21 338.40 56.15 1908.89 337-93 56.09 Change doubtful. 1880.48 336?30 56*17 2n 3422. O2 143. (6. 8... 9.9) R.A.6"24 m i2 > Decl. + 17 i' A and C (11.5) I9II-775 342^83 42:'s6 Bl .796 .835 342.92 342.93 42.70 42.38 1911.80 342.89 42.55 For the proper motion of the principal star. This has been given : A. G. Ber. 0*089 in 191?! 3423. Aurigae 229. 2 918. (6. 7... 7. 7) R. A. 6" 24 21' Decl. + 52 33' B and C (10.0) 1908.884 26?87 135*80 .898 26.85 135-62 .900 26.95 135.93 1908.89 26.89 I35-78 Further measures are needed to correct the proper motion of A: 1880.48 27?i8 133-75 2n Bl The proper motion of A is given : A. G. Harv. 0*033 >n 27o?o 3449. 2928. (7.4... 8.0) R. A. 6* 26 26' Decl. + 38" 38' B and C (n.o) 1910.701 I22?93 128*94 .720 739 1910.72 123.13 122.60 122.89 128.00 128.23 128.39 The principal star has no sensible proper motion : Groombridge 0*011 in 2i8?o The three stars are relatively fixed. 1880.52 I22?73 128*84 2" Bl 3450. 2922. (7.2...II.O) R. A. 6* 26" 33' Decl. + 64 50' A and B 1912.066 I35?6 10*58 A and C (10.5) 1912.066 5?4 25*46 From the measures of AC by 2, A, and (J (1831-1912) we have for the proper motion of the principal star : 0*022 in 323?7 B appears to be moving at about the same rate and direction. They may make a system of the 61 Cygni type. 3490. 2941. (7.0... 8.0) R.A.6"30 m ii 8 Decl. + 41 41' A and C (10.4) 1909.703 133^82 82*76 133-95 133-63 744 .821 83.02 83.19 1909.76 133-80 82.99 From the Astrographic Catalogue we have : 1894.95 I343 82*56 Donner This is doubtless the star observed as Sh 367, and given with a large error in the distance. 3500. Hosts. (8.0... 12. 2) R. A. 6" 30 58' Decl. + 9 14' A and B 1909.706 251?! 10*05 .838 252.0 10.67 .936 250.6 10.29 1909.83 251.2 10.34 A and C (13.6) 1909.838 I03?5 13*06 C has not been previously seen; a third faint star more distant. The principal star was wrongly identified by Hough. It should be DM (9) 1306 instead of 1281. The place is sub- stantially correct. About 30' distant, sf Ho 515 is the curious object, h 399, which has a well-defined nucleus, with a comet-like tail, spread out like a fan in the direction of 70. h 399 and DM (8) 1418 1909.838 379 140*87 .936 38.3 141-24 1909.89 38.1 141.06 145 Burnham: Measures of Proper Motion Stars 3502. Arg 15. (8. 4... 9.0) R.A.6 h 3i m 7" Decl. 24 2' 1907.022 233 ?8 37786 No other measures of this pair. 3512. 2944. (8.0...IO.O) R. A. 6" 31" 44* Decl. + 48 22' A and C (9.3) 1910.091 i8i?42 194724 .093 181.45 194-79 .109 181.58 194.82 3559. 12 Lyncis. ^ 948 R. A. 6" 35 m 38' Decl. + 59 34' A and D (5.2.. .10.8) 1910.049 257?45 I73"53 .091 257.52 172.43 093 257.35 172.79 1910.08 257.44 172.92 A prior measure is : 1879.48 254^92 167701 2n Bl. Further measures are needed. The apparent change seems too large for the proper motion of A. The proper motion of 12 Lyncis is doubtful : Auwers 0^085 in 275?4 Boss 0.015 in 273.8 Groombridge 0.035 in 256.8 3580. 2957- (7 -5-.. 9-0) R.A.6"37 m 27' Decl. + 30 57' 1907.791 92?7 3725 .810 91.3 3.40 .848 92.1 3.43 1910.10 181.48 194.62 No change in AB. C is DM (48) 1412. 1875 i8i?l 195^6 A. G. Bonn 1881.54 181.03 196.55 2n Bl. 3521. H2. (7. 8... 7.8) R.A.6'32 m 35" Decl. + 9 45' 1907.675 281 ?9 0^77 7.694 275.2 0.70 8.709 276.4 0.78 1907.82 92.0 3.36 No measures since 1866. Without change. Two faint stars following; the nearest 13.5 m from A, loi?i : 1879. 3587. 2958. (6.0... 6.0) R. A. 6" 38 1 1- Decl. + 55 50' B and C (10.9) 1910.049 264?57 165700 .091 264.48 164.97 .109 264.72 165.53 1908.02 277.8 0.75 Probably unchanged. 3534. 2951. (8. 5... 10. 7) R. A. 6* 33" Si' Decl. + 9 56' A and B 1908.884 309?4 21743 9.071 310.1 21.33 9.091 309.7 21-39 1909.02 309.7 21.38 B and C (12.0) 1908.884 229?4 11730 9.071 230.2 11.31 9.091 228.4 H-77 1910.08 264.59 165.17 The only other measure is : 1880.47 263?34 i63:'35 2n Bl. From these measures we have for the proper motion of A : 07137 in 147^3 From meridian positions : Bossert o7ii2 in I53?2 Boss 0.126 in 148.7 3589. A. G. 120. R. A. 6" 38 31' Decl. + 3 48' Not double, and nothing near answering the description (1906.79). 1909.02 229.3 11.46 There is a misprint in the angle of BC in Part II of the General Catalogue; for 2Op?9 read 229^9. 3553. H 2335- (9-0... n. 5) R. A. 6* 34- 56' Decl. + i 18' I9II.947 I02?8 17757 12.046 101.7 17-44 1911.99 102.2 17.50 No other measures, h 400 is I 1 " 40' p II 2335 ; mostly small tars. 146 Burnhatn: Measures of Proper Motion Stars 3596. Sirius. A. G. Clark I. R. A. 6" 39 S3' Decl. 16 33' 1908.750 9467 8':s6 .769 94.06 8.60 .939 93.60 8.80 974 94-35 8.83 3612. Espin 15. (6. 8... 10. 2) R. A. 6" 41 10' Decl. + 46 19' 1908.997 275?6 29"09 9.091 275.8 29.09 9-093 275.8 29.30 distance Bl Bl. 14 Lyncis 1909.06 275.7 29.16 No proper motion found for the bright star. The in the former measures appears to be too small. 3625. 14 Lyncis. 2963. (5. 9. ..7.1) R. A. 6" 42" 30' Decl. + 59 35' AB and C (H.I) 1910.049 12 i? 50 180^75 .091 121.55 180.66 .093 121.25 180.98 1908.86 94.17 8.70 3600. 2960. (7.3..- 9.2) R. A. 6" 40 i' Decl. + 53 10' 1908.747 66?7 2i:'79 .788 66.8 21.90 .824 68.2 21.80 1908.79 67.2 21.83 No other measures since 1867. The principal star is given a small proper motion: A. G. Harv. 0^041 in 227?$ 3604. 2965. (8. 3... 10.3) R. A. 6" 40 m 36' Decl. + 11 3' A and C (13.0) 1912.810 3iS?3 16*30 .867 318.2 16.50 .890 320.3 16.58 1910.08 121.43 180.80 The other measures are : 1879.24 I2i?53 i8i:'6s in 1879.71 121.87 180.75 in Little or no relative change. The proper motion of is small and uncertain. Groombridge o"o37 in 199?! Boss 0.047 m 270.0 Auwers 0.047 in 220.9 3626. A 58. (7.6... 8.3) R.A.6 b 42 m 39 Decl. 3 58' 1906.796 148?! 4"22 .966 147-9 4-35 1912.85 319.0 16.46 A and D (8.7) 1912.810 63?97 44 ; '59 .867 64.67 44-35 .890 64.93 44.16 1912.85 64.52 44.37 The measures of the two more distant companions are now sufficient for a very accurate determination of the proper motion of the two principal components. From the measures of AC (1879-1912) and of AD (1829-1912) we have for the motion of A: Measures of AC R. A. + o"o55 Decl. 0^038 Measures of AD +0.053 0.045 Therefore the annual movement of A and the near com- panion, B, is: o"o68 in I27?9 3606. 2962. (8. 5... 8. 5) R. A. 6" 40 42' Decl. + 26 50' 1907.807 242?! 26"oo 8.671 242.4 25.80 8.692 242.2 26.10 1906.88 148.0 4.28 The only other measure is given in Part I of the General Catalogue. 3627. Espin 67. (8. 7.. .10.0) R.A.6 h 42 m 49" Decl. + 40 38' 1907.807 3078 5''7 8.063 309.3 S-9I 8.671 310.0 5.91 1908.18 309.0 5.87 3633. 2968. (8.0... 9.0) R. A. 6" 43 17" Decl. + 52 50' A and B 1907.120 287?! 2o"59 .137 288.2 20.54 .140 287.7 20.97 1908.39 242.2 25.97 No late measures; unchanged. 1907.13 287.7 20.70 147 Burnhain: Measures of Proper Motion Stars These stars have no relative motion. The principal star is given some proper motion : A. G. Harv. o7i44 in 2d6?o There is a 13.5 m star not previously seen : BandC 1907. 120 59?8 8738 7.137 59-6 8.19 7.791 60.2 8.29 8.633 61.9 8.46 8.769 61.0 8.67 This, with the two positions by O2 (1850-1907), gives for the proper motion of 15 Lyncis: o"i30 in i63?4 Other values from meridian observations are : Auwers 07124 in 179^6 Groombridge 0.126 in 190.7 Newcomb 0.131 in 172.3 Boss 0.134 in 177-7 1907.89 60.5 8.39 3653. sgdurigae. 2974. (6.7...io.o) R. A. 6" 44 46' Decl. + 39 I' A and B 3685. 2978. (7.o...io.o) R.A.6"47 ra 22' Decl. + 38 3' 1908.728 oo?45 16742 747 00.55 16.84 .766 89.43 16.82 1908.636 223?9 22*34 .652 224.0 22-43 .671 223.3 22.40 1908.75 90.14 16.70 The measures of 2, A and (5 (1831-1908) give for the true proper motion of the principal star : 1908.65 223.7 22.39 B and C (13.3) 1908.689 2i7?s 25778 .824 219.3 25.74 .843 219.8 26.01 07039 in 222?s The proper motion of A (Groombridge 1241) is given from meridian positions : Greenwich 0*048 in 25o?4 1908.79 218.9 25.84 No late measures of AB, and no other measures of the faint star. The proper motion of 59 Aurigae is very uncertain : Auwers 0^035 in 86?7 Boss 0.008 in 49.4 3670. 2977. (8.0... 9.5) 3692. 38 Getninorum. 2982. (5. 4... 7. 7) R. A. 6" 47- 52' Decl. + 13 20' A and C(n.o) 1912.810 328!i7 109738 .867 328.00 109.23 .800 328.37 109.28 R.A.6 1 46 m 20 < Decl. + 4843' A and B 1910.720 I27?4 1797 739 129-0 2.00 1912.85 328.18 109.30 Faint star for the proper motion of A; no other measures. From the star catalogues we have : Auwers 0^087 in H4?3 1910.73 128.2 1.98 A and C (10.7) 1910.720 223?oo 152*29 .739 222.47 152.64 .770 222.82 153-07 Boss 0.112 in 139.3 3710. 2991. (8.0... 9.0) 1910.74 222.76 152.67 No proper motion in A : 1881.50 222?47 152708 2n Bl. 3878. 15 Lyncis. O2 159. (5.1. ..6. 2) R. A. 6" 49 40' Decl. + 25 7' A and B 1907.022 i67?2 3776 .102 168.7 3-73 .118 166.8 3.63 R. A. 6' 46" 54' Decl. + 58 35' A and D (9.5) 1907.848 i67?3o 199*33 8.000 167.30 199.14 8.025 167.58 109.11 1907.08 167.6 3.71 Possibly slow retrograde motion in angle. C and D (10.9.. .11.4) 1907.022 359?5 13730 .118 358.5 13-09 1907.96 167.39 199.19 1907-07 359-0 13.19 148 Burnham: Measures of Proper Motion Stars The principal star is correctly identified in Lewis' " Struve " as W* VI. I4S3-4, and the correction on p. XXIII of the Intro- duction, changing it to 1449, is erroneous. The latter is not a double star. The pair measured by Lewis : 1904.22 358?5 6*30 I could not find unless it is the faint stars CD given above. 1907.022 A and C ?2 13474 Single dist. 3725. n Cams Min. 2997- (4-7- -8.0) R. A. 6" 50 36' Decl. 13 S3' A and C (10.0) 1912.810 288? lo 87703 .86 7 288.30 86.76 .884 288.07 86.85 1912-85 288.16 86.88 A and D (10.2) 1912.810 6i?3o I05"94 .86 7 61.87 105.48 .884 6i.93 105.57 1912.85 61.70 105.66 The other measures by Engelmann (1673) on a single night are: AC 1865.18 288?4 9o"o AD 1865.18 60.7 107.0 These appear to be rough micrometer settings, and the measures should 'be continued for the proper motion of the large star. This is uncertain from the meridian positions: Auwers 0*027 in 282^9 Boss 0.007 in 97.8 3752. 41 Geminorum. O2 162 rej. (6. 2... 11.7) R. A. 6" 52 57" Decl. + 16 6' 1912.810 .890 153-7 21 "34 21.62 1912.85 154-4 21.48 It is obvious from a comparison of this with the prior meas- ures by P, Doo and Hu that the principal star has no sensible proper motion ; and this appears also from the transit positions. Auwers 0*033 m 2933 Boss 0.017 in 227.2 3793. 2 1009. (6. 7... 6.8) R. A. 6* 56 7' Decl. + 52 56' B and C (10.8) 1910.703 133? 15 178772 720 133-57 178.32 .739 133-28 178.65 1910.72 133-33 178.56 The proper motion of A is uncertain : Groombridge 0*055 in 222?o A. G. Harv. 0.046 in 188.9 The only other measure of C is : 1879.51 I335i I79"62 2n Bl. 3797. t Geminorum. Sh 77. (4.0... 10.5) R. A. 6" 56 59" Decl. + 20 45' A and B (10.8) 1907.769 83?8a 86"oo .772 .807 83-87 83.81 87.25 87.24 1907.78 83.83 A and C (8.5) 1907.769 350?5o -772 350-23 .807 350.45 87.16 95-05 94.88 95.28 1907.78 350.39 C and c (12.3) 1907.769 .772 .807 166.40 166.51 95-07 27.25 27.13 27.11 1907.78 166.21 27.16 The apparent motion of C from A in 1875 and the position of 1907 is : 07078 in 297^6 Therefore the real proper motion of C, assuming the motion of A by Auwers to be correct, is : 0*095 m 297 ?o It is evident from the only other measure of AB that neither of these stars has any sensible motion : 1880.01 83?6 87*22 2n P Remeasurement of Cc will give hereafter an independent value of the motion of the larger star. It should be noted that the proper motion of Geminorum from meridian observations is very uncertain : Auwers 0*017 in 204^4 Newcomb 0.007 in 198.6 Boss 0.009 m 207.8 3817. H 749. (10.6... 12. 7) R. A. 6" 58 30" Decl. 11 8' A and B 1909.071 ii9?o 14*02 A and C (10.8) 1908.974 92?6 9.071 1909.02 92.2 92.4 83"7i 84.66 84.18 149 Burnham: Measures of Proper Motion Stars A and D (n.o) 1908.974 8s?3 136794 9.071 85.0 137-36 The three positions by 2, A and f5 (1830-1908) give for the apparent proper motion of A : 0"038 in 258?2 1909.02 85.1 137-iS A and E (n.o) 1908.974 71 9 156724 9-071 71-7 156.85 A and C (n.o) 1908.898 253?o7 236704 .900 252.93 236.01 974 253.00 235.10 1909.02 71.8 156.54 H 749 is in the central part of h 428. In his observations of the latter, Engelhardt has compared A with the three brighter stars by differences of R. A. and Decl. from which we have : AC 1887.06 9i?8 8373 in AD 1887.06 85.1 135.7 m AE 1887.06 71.8 155.6 in The differences in distance do not suggest any real change, as they would be accounted for by the method of transists. 1908.92 253.00 235.72 The change in this is explained by the proper motion of A. 1880.54 252?8o 237785 2n Bl. As these two positions give an apparent movement in A of about 07078, it is very probable that the 7.8 m star has a con- siderable motion of its own. This will appear from later measures of the two faint attendants. C and c (n.6) 1908.900 250?4 3708 .994 249.6 3.12 3852. 2 1024. (8.3... 8.8) R. A. 7" 2 m 3' Decl. + 38 19' A and B 1908.95 250.0 3.10 Cand d (12.9) 1908.900 2OO?9 22"54 .994 202.4 22.80 1908.074 3i55 i"22 9.091 313.0 1.24 1908.95 201.6 22.67 1909.03 314.2 1.23 No change in AB. A and C (11.2) 1908.900 Ii6?23 107729 8.074 116.23 106.80 9.091 115.83 107.23 3873. 2 1032. (7.0... 10. 3) R. A. 7" 4 50' Decl. + 48 42' A and C (9.0) 1908.826 3I9'5 I32''55 1908.99 116.10 107.11 The other measures do not indicate any proper motion in AB. .843 319-24 132.11 .845 3I9-47 132.79 .862 318.98 132.06 1880.55 "544 107703 2n BI. 3857. H 3930. (9. 7... 10. 6) R. A. 7" 2- 48' Decl. 12 59' 1910.835 73?! is':o6 933 73-0 15-14 1908.84 319-21 132.38 For comparison we have : 1879.1 3i8?6 13371 A. G.Bonn 1880.52 318.83 132.98 2n Bl. C is DM (48) 1488 1910.88 73.0 15.10 H 3930 is the largest star in h 3073. No other measures. 3858. 2 1025. (7. 5... 7.8) 3905. 52 Geminorum. Ho 343. (6.2...H.6) R. A. 7" 7 22' Decl. + 25 6' 1910.760 262^7 23788 .780 266.8 23.83 .856 264.5 23.89 R. A. 7* 2" 56' Decl. + 56 o' A and B 1008.898 135?! 24^26 .900 134.5 24-10 974 135-0 24.16 1910.80 264.7 23.87 From a 2O-year interval in the micrometer measures the proper motion of the large star from meridian positions appears to be too small. The four positions by Ho, Doo and P give : Measures o7i74 in I45?3 Boss 0.105 ' n 151.4 1008.92 134.9 24.17 A. G. Ber. o.in in 160.7 150 Burnham: Measures of Proper Motion Stars 3906. 2 1042. (8. 3... 10. 3) R. A.7 h 7 m 25' Decl. + 42 21' A and B 1907.788 40^8 i i "84 7.791 40.5 11.87 8.063 41-6 12.20 8.689 4 1 - 2 12.00 3927. 2 1052. (8.5... 8. 7) R. A. 7" 8 m 52" Decl. 10 4' 1906.796 2i?4 19777 .964 21.6 19-95 1906.88 21.5 19.86 No change. 3943. ^ 1050. (7. 3... 8.0) R. A. 7" io m 6' Decl. + 55 8' A and B 1908.788 20? 15 ip"33 .804 20.13 19.33 .843 19.30 19.36 1908.08 41.0 11.98 A and C (13. 5) 1907.791 78?5 24"2i 8.785 80.0 24.49 8.788 77-7 24.37 1908.45 78.7 24.36 No measures of AB since 1867. The faint star has not been previously observed. The principal star is DM (42) 1686. The brighter star DM (42) 1685 is in the field. 3908. 2 1039. (8. 8... 9. 5) R. A. 7" 7 27' Decl. + 63 44' A and B 1908.769 207?3 3"i4 .785 210.3 3-Oi .788 208.6 3.09 1908.81 19.86 i')..U No change since 1829. A and (11.5) 1908.785 226? 13 I97"30 .788 225.77 197.40 .843 225.97 197.48 1908.81 225.96 197-39 The prior measure is on a single night only, and change is doubtful. It should be remeasured later. 1880.28 225?48 199738 in Bl. 3944. 2 1054. (7.3.. .8. 5) R. A. 7* io m 10* Decl. + 35 10' A and B 1908.766 291 ?9 i8"72 .785 291.4 18.53 .788 292.1 18.64 1908.78 208.7 3-o8 A and C (8.5) 1908.769 310^83 127758 .785 311.27 127.54 .788 310.80 127.67 1908.78 310.97 127.60 No measures of AB since 1869. C is DM (64) 699. 1880.56 3ii?35 I27'.'22 2n Bl. 3909. 2 1047 (7. 3... 9. 8) R. A. 7" 7 28' Decl. + 15 58' B and C (11.4) 1908.769 297?4i 35791 .788 297.80 35.83 .843 298.25 35.73 1908.78 291.8 18.63 B and C (9.2) 1908.766 267^90 79740 .785 268.03 79.26 .788 267.95 79.8o 1908.78 267.96 79-49 No change in AB, and probably none in the other. 1880.54 267^15 79783 2n Bl. 3948. 47 Camelop. 2 1055. (6.0... 10.5) R.A.7 h 9 ra 46' Decl. + 60 7' 1907.120 329?I 27l2 .137 329.8 2.03 8.728 329.6 2.03 .769 334-9 2.17 .898 329.4 2.02 1908.80 297.82 35.82 The principal star appears to have a small proper motion. The measures of the third star will show whether or not B has any movement. 3915. 2 1048. (8. 3... 10. 2) R. A. 7" 7 m 54' Decl. + 4 25' 1006.796 3497 5"66 .964 350.1 5.86 1908.13 330.5 2.07 The R. A. of this in the General Catalogue is i m too large. The proper motion of the large star is doubtful : Auwers o7o68 in 276^8 Boss o.on in 49.6 1906.88 349.9 5.76 No change. 151 Burnham: Measures of Proper Motion Stars 3962. 2 1051. (6.5... 8.6) R. A. 7" I2 m 7' Decl. + 73 19' A and C (6.7) 1912.755 8z?i 31^34 791 82.8 31.85 793 82.7 31.39 The only other measures of this are uncertain in distance and angle : 1879.33 288?4S 73^70 in Bl 1879.78 286.07 74.72 in Bl. A and B have a common proper motion, if there is any motion. Auwers 0:048 in 226?4 A. G. Hels 0.062 in 216.8 Boss 0.038 in 177.4 3977. 2 1070. (8. 2... 9.2) R. A. 7" 13 31- Decl. + 34 15' A and B 1908.769 322?9 i?74 9.071 322.8 1.83 1912.78 82.5 31.53 C and D (13.0) I9I2-7SS I2493 46:36 .791 125.62 46.09 793 125-93 46.56 1912.78 125.49 46.34 No other measures of D. The large stars have a common proper motion : Bossert 0:059 in 250^3 Greenwich 0.053 in 247.8 3965. 2 1069. (8.3... 8.3) R. A. 7* I2" 1 32' Decl. 13 29' 1907.022 I93?6 25:23 7.137 194-7 25-08 9.170 104.1 25.36 1908.92 322.8 1.78 A and C (10.7) 1908.766 I22?oo 87:16 .769 121.66 87.16 .788 122.43 87.44 1908.77 122.03 87.25 There is no sensible proper motion in AB : 1880.55 I22?38 87:91 2n Bl. 3991. 2 1071. (8.2... 10.2) R. A. 7" 14 22- Decl. + 45 14' 1911.835 I3?9 17:01 12.046 14.5 16.93 12.066 15.5 16.98 1907.78 194.1 25.22 No change. 3971. 8546. (8.5... 8.6) R. A. 7' 13- 4' Decl. + 31" 42' A and B I9II-755 358? 10 83T37 .835 357.83 83.46 -870 358.50 83.22 1911.98 14.6 16.97 From the measures by 2, A, Doo and (1829-1911) we have for the proper motion of A : 0:054 in 255?8 3994J. 56 Geminorum. (6.0... 13.0) R. A. 7" 14 52" Decl. + 20 40' 1912.810 203?6 16:91 .867 203.3 17-39 1911.82 358.14 83.35 A and C (8.6) 19" -755 6>?57 144:05 .835 67.63 143.52 .870 68.30 143-93 1911.82 67.83 143.83 If the measures of 1825 are substantially correct, there has been considerable change from proper motion; later observa- tions will determine this. 3973. 19 Lyncis. 2 1062. (5. 3... 6. 6) R. A. 7* 13" 4' Decl. + 55 30' B and C (n.o) 1908.766 287?03 74:20 .769 287.46 74.52 .788 287.60 74.31 1912.84 203.4 17.15 The only other measures are of recent date: 1901.08 205?! 17:75 2n fj The observations should be continued for the proper motion of the bright star. Measures o!"o67 in 248?! Auwers 0.075 in 263.9 Boss 0.069 >n 241.3 1908.77 287.36 74.34 152 Burnham: Measures of Proper Motion Stars 4001. 02(A PP .)8 4 . (7-0... 7-3) R. A. 7" I5 m 21' Decl. + 56 48' A and B B and C (9.5) 1906.796 322?6 20*22 7.022 322.0 20.23 7.102 323.3 20.37 I9II-755 32497 "4"i5 .835 325-07 "3-57 .870 325-30 113-95 1906.97 322.6 20.27 No other measures since 1867. 1911.82 325.11 113.89 B and C (12.3) I9IL755 I9363 37*43 -835 194-33 37-45 .870 194-83 37.64 4051. H 3964- R. A. 7' 19 5 1 ' Decl. 20 47' 1911.796 3477 4*52 1911.82 194.26 37.51 One of these large stars appears to have a small proper motion. I have, therefore, connected a faint star. 4012. 2 1075. (8.0... 10. o) R. A. 7" 16 37' Decl. + 63 14' A and DM (63) 708 (9.3) 1910.701 33333 223*27 835 333-38 223.28 No evidence of material change. As described by Herschel, the components of H 3964 are among the brightest stars of h 3083. The latter is given of the 8th class. 4059. 63 Geminorum. Sh 368. R.A.7"20 m 37' Decl. + 21 42' 1908.843 323op 42*93 .862 323-05 42.65 .884 323-12 43-33 .898 323-23 42.95 895 333-22 223.59 1908.87 323.12 42.96 1910.81 333-31 223.38 Evidently the principal star has no sensible proper motion : 1880.57 3332i 223*51 2n Bl. 4045. ^ 1087 and 1088. (7.0... 9.0) R. A. 7" 19"- 15' Decl. + 14 20' A and B It is probable that the companion has the same proper motion as the large star. Auwers 0*122 in 214?! Boss 0.133 in 203.5 A and C (10.5) 1909.760 2i8?75 145:70 .818 218.63 145.69 .821 218.33 146.20 1909.744 I95?9 11*26 .821 194.8 ii. 21 838 I95-I 10.97 1909.80 218.57 145.86 No other measures of C. 1909.80 195.3 "-IS A 1 and B 1 (8.2. ..ii. 5) 1909.744 40?6 21*28 .821 40.2 21.08 .838 41.1 21.17 4070. O2(A PP .)8s. (7.3... 8.2) R. A. 7" 21 23' Decl. + 24 54' A and B O O 191 I. 755 58*46 A and A 1 .775 24?70 58.30 .835 24.73 58.49 .821 238.30 112.62 .838 238.27 112.58 1911.79 24.71 58.42 Comparing this position with that of A in 1875, we have the 1909.80 238.26 112.52 No sensible relative motion. 4049. ^ 1090. (7.0... 8.0) R. A. 7" 19 28' Decl. + 18 45' A and B 1906.796 97?8 60*57 7.022 98.0 60.49 7.102 97.5 60.73 proper motion of A : 0*082 in i6l?4 B is DM (24) 1666, where the magnitude is given 9.2. There is little probability that the small star has any move- ment which would affect this result. This will appear from future measures of a much fainter star: A and a (11.4) I9".755 I3i95 34"4i 775 I3L47 34-22 .835 131-63 34-53 1906.97 97.8 60.60 I 1911.79 131.68 34.39 53 Burnham: Measures of Proper Motion Stars 4098. 2 1104. (6. 7... 8. 3) R. A. 7' 23 55' Decl. 14 44' A and C (11.5) 1910. 148 i87?98 20730 .164 188.40 20.26 933 187.10 20.58 4121. H 2392. (10.5... ii. 4) R. A. 7" 26'" 56' Decl. + 71 56' 1910.701 i67?3 26701 739 167.4 26.38 1910.72 167.3 26.19 H 2392 is in h 452; mostly small stars. No other measures. 4130. O2 175. (6.0... 6. 6) R.A.7 b 2 7 m 3i' Decl. + 31 13' AB and C (10.0) 1908.689 194:70 81:55 .709 194.85 81.53 .728 194.18 81.46 1910.41 187.83 20.38 A and D (12.0) 1910.148 7?82 40^77 .164 7.30 41.23 933 6.70 41.09 1910.41 7.27 41-03 The apparent motion of C with reference to A is only about )To3 annually, which may be explained by errors of observation, rhis seems to be a system of the 61 Cygni type, but with three :omponents. The proper motion of the group from the meas- 1908.71 194.58 81.51 ures of D (1882-1910) is: Measures of AD 0^334 in 217^3 Porter 0.312 in 216.1 Paris 0.327 in 209.5 4103. "S. 1098. (9.0... 9.0) R. A. 7" 24 27' Decl. + 59 49' 1907.120 .137 .140 286.1 286.4 26"93 26.95 27-31 1907-13 285.8 No other measures since 1868. 27.06 4111. 2 1109. (8.8... 8. 8) R. A. 7" 25 47' Decl. o 16' A and B 1907.102 I9?o 2*90 .120 137 16.4 18.7 3-14 3.08 1907.12 18.0 3.04 A and C (n.o) 1907.102 3o6?8 26^89 .120 307.1 27.03 .137 306-8 26.87 1907.12 306.9 No recent measures of either. 4118. 2 iii2 rej. (7. 8... 10. 5) R. A. 7" 26 21' Decl. 8 37' 1910.148 .206 112. 6 112. 2 23T86 23.64 23.24 1910.17 II2.4 23.58 The small star appears to be moving with the other. Radcliffe 0^167 in 206^3 Porter 0.188 in 217.3 The only other measures are those by Glasenapp given in the General Catalogue. For the proper motion of the close pair we have : Auwers 0^046 in 294?3 Boss 0.032 in 268.2 4152. H 3295- This is the same as "S. 1118 rej. (No. 4148). The nebula re- ferred to by Herschel is h 457 which is in the field with, and closely following, the 7.3 m star, DM (39) 1979. It is too diffused for accurate measurement. 4159. O2 (App.) 87. (7.0. . .7.0) R. A. 7" 30 29' Decl. + 42 44' 1908.804 I78?38 6 4 "39 .826 178.63 64.50 .846 178.78 64.14 1908.83 178.60 64.34 Distance apparently decreasing. Dembowski found 65:51 in 1875. 4162. ^ 1120. (6. 5... 9. 5) R. A. 7" 30 m 32' Decl. 14 13' 1910.933 36 5 *9"77 11.008 38.5 19.74 11.107 36.4 19-47 1911.02 37.1 19.66 No material change. This and several other doubles form a portion of h 459 (= h 3088). 4164. 70 Geminorum. P 200. (5. 9. ..n.o) R. A. 7" 30 40' Decl. + 35 19' A and B 1911.870 I9o?8o 100*57 12.008 190.55 99.8i 12. on 190.15 100.43 12.046 100.55 99-97 1911.98 190.51 100.20 154 Burnham: Measures of Proper Motion Stars A and C (10.0) 1911.870 99?3o i6o?47 12.008 99.15 161.45 12.046 99-10 160.83 A and G (8.5) 1908.884 l?28 84^21 8.939 0.92 84.15 9.164 1.30 84.00 1911.97 99.18 160.92 From five positions of AB by A, Doo and P (1876-1911) we have for the corrected proper motion of the large star: Measures o"os8 in 44?o Auwers 0.029 in 35.5 1909.00 1.17 84.12 A and H (10.0) 1909.164 268?5O I49''9i .170 268.30 149.62 .186 268.55 149.78 Boss 0.043 in 65.3 It should be noted that Dembowski's measure of the other distant companion is of A and CD, and not A and C; and in my measure in 1880, the distance i6o"47 should read i6i"o4. About 2' np 70 Ceminorwn is h 456. It is round and small, but bisection not very exact. The measures connect it with a 1909.17 268.45 149-77 A and I (7.5) 1908.939 26? 10 i64':88 9.164 26.47 165.03 9.170 26.23 165.24 9.0 m star in the field. DM (35) 1658 and A 456 1911.870 249?4 io6"s 12.046 247.1 108.5 1909.09 26.27 165.05 A and J (8.8) 1909. 186 354-55 i96"9 .206 354-04 196.76 1911.96 248.2 107.5 .227 354-25 196.29 4168. H 5470 R. A. 7 n 3i m 5* Decl. 14 13' Herschel said this was not identical with 2 1120, and it could not be if his description was correct, but probably that was erroneous, and it now appears to be the same as 'S, 1121, with error in the estimated angle. It is in the central part of h 459. 4169. 2 H2i. (7. 2... 7. 5) R. A. 7" 3i m 5' Decl. 14 13' A and (12.3) 1908.939 i3345 I7"76 9.164 133-57 17-40 9.170 132.05 17.42 1909.21 354-28 196.65 2 1 121 is the principal star of h 459. Some of the other stars of the cluster were remeasured in the hope of finding a small star with some proper motion. So far, the differences from the results found by Glasenapp are no larger than the probable errors in the average set of measures. The observations by Glasenapp are : AC 1893.19 I32?99 i6"i7 in AD 1893.18 98.06 65.07 2n AE 1893.18 238.88 72.34 2n AF 1893.18 3I5-I4 84.55 2n AG 1893.18 0.80 84.63 2n AH 1893.18 268.33 150.26 2n AI 1893.18 26.00 165.23 211 AJ 1893.19 354-o6 196.31 zn 4183. H 765. (8.6... 11. o) 1909.09 133.02 17-53 A and D (9.9) 1908.884 o8?67 64"59 8-939 98.58 64.47 9.164 98.74 64.25 R. A. 7" 32 30' Decl. + 27 o' A and B I9II.I04 2I4?2 22'/93 .142 213.5 23-48 .145 213.5 23.39 1909.00 98.60 64.44 A and E (ii.i) 1908.884 238^57 72*26 8.939 238.28 72.24 9.164 238.74 71.96 1911.13 213.7 23.27 A and C (n.o) 1911.104 298?! 4i"i6 .142 296.4 41.14 .145 296.8 40.82 1909.00 238.53 72.15 A and F (11.3) 1908.939 3i5o8 83:'i9 9.170 315.45 83.80 9.186 315-55 83.64 1911.13 297.1 41.04 The proper motion of A from meridian observations seems to be much too large. From the measures of the two com- panions (1901-1911) the motion of that star is: Measures o'/o64 in i64?5 1909.10 3I5-36 83.54 Porter 0.163 in 181.9 155 Burnham: Measures of Proper Motion Stars 4186. 24 Lyncis. H 2405. (S.O...9-5) R.A.732 m 5i' Decl. + 58 59' 1911.104 3i993 S4"92 .107 320.23 54.83 .142 320.20 54.80 A and DM (3) 1778 1906.694 ADecl. 52^89 6.966 52.77 7-oo6 52.49 1906.98 52.72 The A. G. positions give 54?4 (1881.0). 4247. Schj 8. (8.5... 9.0) R.A.7"39 m 3o' Decl. + 14 i' 1907.137 25?7 2:13 .197 28.6 2.09 1911.12 320.12 54.85 The interval is too short for a high degree of accuracy in the proper motion. Later measures will give a better value: Measures oro66 in 213^7 Groombridge 0.058 in 212.8 Boss 0.068 in 206.3 Auwers 0.077 in 217.7 4210. SchJ7. (8.5... 9-5) R. A. 7* 35 i' Decl. + 9 29' 1910.780 3454i 30?02 735 345-88 30.45 933 345-17 30.13 1907.17 27.1 2. ii Unchanged since 1875. 4250. X 1138. (6.2... 7.0) R. A. 7' 39 58' Decl. 14 24' A and B 1908.939 338?2 16:72 9.164 339.0 16.78 1910.82 345-49 30.20 No other measures, h 462 is closely following; has no central condensation for accurate setting of the wires. Schj 7 and h 462 1910.83 AR. A. + 7o?2 A Decl. + 21075 h 462 and DM (9) 1750 (9.5) 1910.83 1432 200?5 The R. A. of A 462 is doubtful in Dreyer. From the compari- son with Schj 7 we have for the place of h 462 : R.A.7*355!2 \ l86o Decl. + 934'2"SJ 4227. 2 1134. (8.0... 11. 2) R. A. 7' 37" 13' Decl. + 3 47' A and B 1906.964 I46?3 io?i7 6.966 145.4 10.19 7.006 146.8 10.13 1909-05 338.6 16.75 A and C (9.9) 1908.884 228?ss 100:67 8.939 228.37 100.46 9.164 228.41 too. ii 1909.00 228.44 100.41 The only other measures of C are those given in Part II of the General Catalogue. The change in distance corresponds to a proper motion in A of about o?o6. The planetary nebula h 464 is about 3^ preceding. My former measures comparing the central star with one in the nebula, and another following, are given in Pub. Lick. Obsy. II, p. 162. It 464 (central star) and star s 1909.186 2ii?6 15:43 h 464 (central star) and star / 1909.186 I27?2 49"34 4286. O2(App.)89. (6. 3... 7.0) R.A.7 B 43 m 29" Decl. + 31 55' 1908.102 82?98 76:69 .326 82.68 76.84 .689 82.78 76.79 1906.98 146.3 10. 16 Common proper motion. The motion of A is given : A. G. Alb. o"o97 in is8?2 A and C(io.6) 1906.964 346?9 83:48 6.966 346.8 83.76 7.006 346.7 83.42 1908.37 82.81 76.77 No change since 1875. 1906.98 346.8 83.55 156 Bitrnham: Measures of Proper Motion Stars 4296. H 431. (9.6... 9. 6) R.A.744 m 43' Decl. + 30 7' 1908.102 S36 5''87 11.870 51.4 6.04 4345. H 433. (11. 7... ii. 7) R. A. 7" 50 3' Decl. + 23 58' 1910.739 538 7*30 .780 50.2 7.50 1009.98 52-5 5-95 No other measures. 4304. 2 1153- (9-0... 9- 2) R. A. 7" 4S m 54' Decl. + 12 20' 1910.76 52.0 7.40 No description in H. This is in the right place, and is doubt- less the one referred to. About io' n of H 433 is h 473; brighter in the center, but with no definite nucleus. h 473 and star 10.6 m 1910.739 l6l?3 202?! .780 l6l.3 203.1 1907.118 357-8 19-57 .120 357-0 19-77 -997 357-1 19.72 1910.76 l6l.3 2O2.6 1907.41 357-3 19-69 No measures since 1868. Fixed. 4324. 2 1155- (8.0... 10. 7) R. A. 7" 47 m io' Decl. + 26 29' 4357. 2 1160. (8.0... ii. 2) R.A.7 h 5i m 4i' Decl. + 57 16' 1907.848 32?5 5"92 8.769 32.7 6.41 8.898 33.0 6.24 1907.788 3425 I5"73 10.971 342.9 16.09 11.104 34I- 2 15-78 1908.50 32.7 6.19 No other measures since 1867. 1909-95 342.2 15-87 No measures since 1867. Perhaps a little change in distance. 4341. 2 1158. (8.8...IO.O) R. A. 7" 49 26" Decl. + 22 12' 4359. Ursae Maj. 2. Sh 86. (6.0... 7.0) R. A. 7" si m 46' Decl. + 63 25' 1007.120 8i?3 48*39 .137 81.3 48.26 .140 81.5 48.84 A and B 1907.788 332?7 7*42 .845 334-4 7-44 1907.13 81.4 48.50 The proper motion of the principal star (Groombridge 1386) is : 1907.82 333-5 7-43 A and C (12.9) 1907.772 258?3 i8'/39 .788 257.5 19-20 845 257.3 i-73 Greenwich o?oi8 in 2I5?4 Boss 0.021 in 189.1 B is Groombridge 1388: Greenwich 0^039 in 72^3 1907.80 257.7 18.77 In the General Catalogue the angle of AC is printed 268?8; it should be 256?8. 4342. Pin 92. R. A. 7" 49 28' Decl. 16 20' 1909 170 2698 2"84 4361. 14 Cants Minoris. Sh 87. (5. 5... 9.0) R. A. 7" 52 8' Decl. + 2 33' A and B 1906.906 75?5 86^00 .928 75-6 85.88 .964 75-7 86.01 .186 272.1 2.86 1006.93 75-6 85.96 1909.18 270.9 2.85 The measures of this pair given in Part I of the General Catalogue belong to Hn 91 (No. 4217). The early position of Hn 92 is : A and C (9.1) 1906.906 isi?o 117^46 .928 150.9 117.61 .964 152.1 117-27 1888.24 271 ?2 2"73 3n Com. ii i 1906.93 151.3 117-45 57 Burnham: Measures of Proper Motion Stars A and D (12.0) 1906.906 2&4?8 .928 284.7 .964 284.7 120.58 119.76 1906.93 284.7 A very accurate value of the proper motion of A can be found from the continued measures of the three companion stars. C is DM (2) 1834. The proper motion of the principal star is : Auwers 0^203 in 294^8 Porter 0.209 in 298.9 Boss 0.195 in 296.6 4363. 2 ii68. (8.0... 11.8) R. A. 7" 52" 22* Decl. + 5 57' 1906.906 .924 .966 217.7 218.6 6.38 6.00 1906.93 218.0 Perhaps a little change in the angle. 6.15 4365. Z 1165. (8.0... 10. 3) R.A.752"4i' Decl. + 54 57' AB and C (10.8) 1910.835 .856 277-53 216.89 1910.85 277.58 216.92 Evidently the close pair has no sensible proper motion. 1881.03 277?5i 216^57 2n Bl. 4366. 2 1159 rej. (7. 4... 9.9) R. A. 7" 52 45' Decl. + 72 8' 1910.856 .895 931 96?o 94-9 96.0 3S"23 35.29 35.27 1910.89 95.6 Never previously measured. 35-26 4475. 2 1195. (8. 3... 10. 8) R. A. 8" 5 io' Decl. + 30" 49' A and B 1909.821 332?o 8rSo 331.8 8.94 8.78 10.093 10.107 1910.01 331.9 331-9 8.84 A and C (13.0) 1910.093 iso?8 .128 150.9 23.15 1910.11 Change in AC? 150.8 23.36 4477. t, Cancri. R. A. 8" 5 m 20' Decl. + 18 i' C and (3 1243 1909.782 09.859 10.107 10.109 10.148 10.167 A Decl. + I03"7i 103.20 103.09 103.51 102.96 102.78 1910.03 + 103.21 There is nothing in these measures, which were commenced in 1891, to indicate any variable motion in C. Recent spectro- scopic observations of that star, made at the Yerkes Observa- tory, give the same result. The prior measures are all given in Part II of the General Catalogue. 4501. 2 1193. (6.0... 9.0) R.A.8 h 7 m 28' Decl. + 72 47' A and B I9".755 87?os 11.950 12.008 86.80 87.00 43"6 9 43.40 43.50 1911.90 86.95 43-56 The proper motion given in the General Catalogue, Part II, p. 1071, belongs to another star. The movement of A from meridian position is given : Auwers 0^054 in 202?7 Boss 0.027 in 173.4 Gr. (1900) 0.024 in 199.2 The measures of the small star by 2, A and P (1831-1911) give a different direction : o"o2o in 29?6 There is no probability of any motion in the companion which would substantially change this result; but I have connected a 12 m star for future comparison. I9".755 950 B and C 2?57 2.37 S4*9 54-Si 1911.85 2.47 54-71 4506. H 2435. R.A.8"7 m 45" Decl. 5 24' 1911.796 12.066 204? r 207.1 7-33 I9".93 205.6 7.20 II 2435 is in h 496. Only recent measures. Burnham: Measures of Proper Motion Stars 4529. P Cancri. [3 1065. (3.7--.I3-7) R. A. S" ID"' o* Decl. + 9 33' A and B 1910.203 294?o 29'' 24 .206 293.7 29.21 .260 294.5 29.21 This is confirmed by the relative positions in A. G Lalande. As a further check I have connected a very faint A and a (13. 5) 1911.142 2i2?3 34"i5 .145 213.3 33.83 and star: faint. I9II.I4 212.8 33.99 4565. 02(App.)92. (7.5... 9.0) R. A. 8" 14'" 14' Decl. + 57 48' 191 1 . 104 i8o?oo 57"43 .107 180.55 57-44 .142 179.80 57.86 1910.22 294.1 29.22 le small star is moving in space with the other. A and DM (9) 1922 1875 A R. A. 69? 7 A Decl. 7o'/77 A. G. Leip. 1910.16 69.5 70.15 P A and DM (9) 1926 1875 AR. A. ioo?4 ADecl.66?6 A. G. Leip. 1910.16 100.4 66.4 P lie proper motion of (5 Cancri is : Auwers o"o/4 in 237?2 Newcomb 0.074 in 224.6 Boss 0.075 in 223.8 4531. Z 1211. (8. 7... 9. 2) R. A. 8" io ra 23' Decl. + 39 22' A and DM (39) 2084 (9.3) 1910.128 I3i?20 95"8o .145 131-41 95-68 .148 131-23 95-91 1911.12 180.12 57-58 Perhaps a little change in angle. 4588. O2 191 rej. (7-0... 8. 3) R. A. 8" 17 52' Decl. + 20 32' 1911.950 190? 73 37"39 12.008 191.28 37.43 12.046 191.20 37-40 1912.00 191.07 37-41 No change since 1867 ; h 504 is about 20' nf; small and 4597. 4> Cancri. 8566. (6.o...n) R. A. 8" 19 io s Decl. + 28 if 1910.777 20?ss I29"38 10.931 20.75 129.46 ii. 088 21.03 129-25 1910.14 131.28 95-8o rom the Astrografhic Catalogue we have : 1894.30 130^9 92"34 Donner. hercfore from the two positions the proper motion of A is : o"2O9 in 322?! there is an error in Porter of the sign in declination, his tion-angle would be 325?4. Porter o"237 in 214^6 4550. O2(App.)9i. (6. 6... 7. 5) R. A. 8" a 1 - 50' Decl. + 35 25' A and B 1911.104 221^58 92? 10 .107 221.58 92.02 .142 221. 10 91.97 .145 221.96 91.89 1910.93 20.78 129.36 If the position by South in 1825 is substantially correct, the proper motion of Cancri should be : o"o96 in I90?4 The proper motion of the large star from the star catalogues is: Auwers o'/i33 in 2o8?5 Boss 0.135 in 193.1 4600. H VI. 109. (6.0... 10. 2) R. A. 8" 19 29' Decl. + 7 57' ipii-775 342?4 3i"47 .796 342.0 31.64 -942 342-3 31-37 1911.12 221.55 92-00 rom the three positions (1875-1911) we have for the appar- motion of A : o"i8s in 39?4 1911.84 342-2 31-49 Further measures are needed for the proper motion which is obviously very small. From meridian positions Boss o"o43 in 263 ?4 of A 159 Burnham: Measures of Proper Motion Stars 4609. o Ursae Majoris. fJ 1067. (3. 4... 15. 2) R. A. 8" 2o m i/' Decl. + 61 / A and C (10.0) 1907.197 151?! 143^28 .217 150.8 143.22 4658. S 569. (8. i... 9. 2) R. A. 8" 25 13' Decl. 25 38' 1909.167 339?o7 29'.'37 170 338.43 29.14 186 339-15 29.14 1907.21 150.95 143.25 A and D (10.7) 1907.197 207?3 i7 5 :' 2 o .217 207.4 175.28 1909-17 338.88 29.22 My measures indicate a proper motion in declination for one of the stars of about o"i. The distance by South in 1825 is much too large. 1907.21 207.35 175-24 These positions compared with a mean of the measures by Engelhardt give for the proper motion of the large star : Measures of C 0*230 in 226?5 Measures of D 0.156 in 258.0 These measures should be continued. The motion of the large star from the catalogues is: 4660. S 1240. (7. 2... 10. 2) R. A. 8" 25 37' Decl. + 33 50' A and B 1908.898 746 24*85 8.900 74.7 24.77 9-093 76-4 24.70 Auwers 0*176 in 229^8 Newcomb 0.162 in 225.7 Boss 0.166 in 226.8 4614. H 448. (8. 7... 11. 6) R. A. 8" 20 1 " 33- Decl. + 21 51' 1908.96 75.2 24.77 The four positions of AB by 2, A, Doo and (1830-1908) give for the proper motion of A : 0*042 in 288?! A and C (10.0) 1908.882 245?90 51*75 .898 245.80 51.39 .900 245.70 51.16 lyiy.ojo 3 2 4-7 3'-27 859 325.5 3I.o8 936 324.8 31.59 1908.89 245.80 51.43 A comparison of this with the measure of 1898 by Doolittle 1909.88 325.0 31.31 No other measures. The object in the field, h 506, referred to by Herschel, was not noticed. 4818. H2445- (8.5... 12.9) R.A.8 h 2o m 43 > Dec!. + 52 27' IOO7 I4O 1 1;8 T A A " oo gives practically the same proper motion for A. 4677. 2 1245. (6.0... 7.0) R. A. 8" 29 29' Decl. + 7 2' A and C (10.8) 1910.164 "95o 93*08 .184 119.47 93-i8 .203 119.48 93.26 8-063 157.7 43.74 8.788 158.2 43.72 1910.18 119.48 93.17 A and D (10.7) 1908.00 158.0 43.89 No other measures. The principal star is given a small proper motion : 1910.164 282?oo 117*48 .184 282.07 117.05 --'< Burnham: Measures of Proper Motion Stars Therefore the proper motion of the large star is : o''2O2 in 236^7 Other values from meridian positions are : Porter 0^172 in 230^9 Boss 0.195 in 219.8 4710. ^ 1254. (6. 5... 9-0) R. A. 8" 33 29' Decl. + 20 6' A and B 1906.906 54?8 7.006 7.022 54-4 53-4 20"22 19.99 20.38 1906.98 54-2 A and C (8.5) 1906.906 7.006 7.022 342.2 341.8 62.88 62.89 1906.98 342.0 63.05 A and D (9.0) 1906.906 434 82750 7.006 43.2 82.53 7.022 43-7 82.37 1906.98 43-4 % 2 -47 No other measures of the small stars, C and D. catalogues the motion of A is : Boss o"o42 in 238?o A. G. Ber. 0.056 in 270.0 4727. 2 1261. (7. 5... 10. 2) R. A. 8" 35 i* Decl. II C 3<>' From the 1910.148 .164 .203 302.6 302.6 29"45 29.34 29.77 1910.17 302.6 29.52 No measures since 1867. No sensible motion. 4753. ?. 1259. (8. 5... 9-0) R. A. 8" 38'" 5 1 ' Decl. + 38 56" 1910.148 .164 .203 34i9 342.4 341.8 4-93 5-04 4.92 1910.17 342.O No measures since 1867. 4.96 4758. Ho 251. (8. 5... 12. 2) R.A.8"39 ra 3 a Decl. + 25 45' 1907.102 9-227 1908.16 Probably fixed. 3"58 3.56 150.6 3-57 4761. Z 1269. (9- 5-. -9.6) R. A. 8" 39 m 21' Decl. + 19 41' 1906.796 7.022 7.102 3o8?o 309-4 309.4 1 1 "50 ii. 60 11.47 1906.97 308.9 11.52 The quadrant given by Dembowski is correct. 4778. 2 1274. (7.0... 8. 7) R.A.8 h 4ii6 m Decl. + 38 47' 1910.148 .164 .203 40:1 41.6 40.0 8"73 9.03 8.70 1910.17 No measures since 1867. 40.6 8.82 4807. H 459. (n. 2... ii. 2) R. A. 8" 43 m 41' Decl. + 3ii8' A and B 945 I5"78 95-9 -15-64 1910.931 11.107 1911.02 95.2 15.71 H 459 and h 529 1910.93 AR. A. + 32!! ADecl. 6o"7 This is referred to by Herschel in the note given in Part I of the General Catalogue. 4815. 2 1280. (7. 5... 7- 6) R. A. 8" 44 22' Decl. + 71 16' A and B 1910.049 448 4"66 45-8 4.81 1910.08 45.3 4-73 These stars make a system of the 61 Cygni type. B and C (10.6) 1910.049 94 13 256727 093 .107 94.05 94.17 256.52 257.26 1910.08 94.12 256.68 The only other measures of this are : 1879.67 97^65 217741 3 Bl. From these measures (1879-1910) we have for the proper motion of the larger star: i7377 in 255?5 From meridian observations the proper motion of A is: Kustner 17371 in 254?4 Porter 1.399 in 255.9 161 Burnham: Measures of Proper Motion Stars 4821. 2 1287. (8.0... 10.3) R. A. 8" 44 53' Decl. + 12 35' A and C (12.6) 1906.906 io6?i .928 105.3 .966 105.1 15:10 14.96 15-35 1906.93 105.5 15-14 The small star is not in Struve. The only other measure disagrees in angle: 1000.28 H7?o 2n Doo 4844. Ho 357. (6. 5... 13.0) R. A. 8" 47 48' Decl. + 26 40' 1906.906 7.022 7.102 6?2 5.8 5-2 37" 16 37.00 37.38 1007.01 5.7 37.18 Change uncertain. Ristenpart (4245) gives the proper mo- tion of the large star : 0^433 in 172^9 4863. 2 1293. (7. 8... 9.0) R. A. 8' 50 35' Decl. + 54 26' 7908.808 .000 .020 92?2 92.1 92.1 18:85 18.54 18.49 1908.91 92.1 No other measures since 1866. 18.63 4866. i Ursae Maj. Hu 628. R. A. 8" 50" 59' Decl. + 48 31' B and C(g. 5... 9. 8) 1909.206 i87?7 o"68 .227 186.9 0.58 1909.22 187.3 0.63 Motion in angle, and certainly a binary system. The proper motion of the large star is: Auwers 0^503 in 24O?6 Newcomb 0.500 in 240.1 Boss 0.502 in 240.3 4883. 66 Cancri. 21298. (6.1... 8.2) R. A. 8" 54" 3' Decl. + 32 43' A and C (u.l) 1908.882 3i8?95 187:15 .808 319.03 187.65 974 318.93 187.20 1908.92 318.97 187.33 The first measures are discordant in distance : I879-3I 3i927 188:08 in 1879.83 318.73 187.07 in The proper motion of 66 Cancri is very uncertain : Auwers o"o39 in 324?6 Boss 0.007 in 225.3 4891. 67 Cancri. Sh 101. (6. 3... 9.0) R. A. 8" 54 39' Decl. + 28 23' Bl Bl. 1908.843 .862 .882 32533 324.93 325.13 101:93 101.65 101.96 1908.86 325.I3 101.85 No third star available. The smaller star appears to lie moving with the other. The proper motion is : Auwers ofug in 2i8?o Boss 0.105 in 213.4 4923. 9-43 18.85 19.07 1907.87 164.7 No recent measures. Fixed. 19.12 5104. 22 Ursae Maj. 21351. (3. 8... 9.0) R. A. 9" 22 m 3' Decl. + 63 35' A and C (10.5) 1908.766 227?94 93-'5i .769 227.88 93.26 228.40 93.07 227.65 9.}. 34 .788 .826 1908.79 227.97 93.29 Prior measures for comparison are : 1886.39 227?33 9o"6o in 1894.40 227.87 92.32 in Eng. Eng. The three positions give for the proper motion of 23 Ursae Maj.: o"ios in 6s?5 Ball has two measures in 1879, but as the distances differ by more than i", they are not used in the computation. No change in AB. Auwers o'.'io4 in 75^5 Boss 0.117 in 77.6 5113. 7 Leonis Min. H 1166. (6.0... 9. 3) R. A. 9" 23 28' Decl. + 34 n' 1911.950 12.007 12.046 I29?33 128.88 129.30 62.87 62.55 1912.00 129.17 62.75 There is no sensible change since 1876. Herschel's distance in 1783 is much too small. The proper motion of A is given : Auwers o'.'o57 in 2o6?o Boss 0.065 in 186.5 As these stars appear to have a common proper motion, I have connected a third for future confirmation of this move- ment. A and C (9.8) 1911.950 2T3?33 97?82 12.007 213.05 97.85 12.046 213.07 97.70 1912.00 213-15 97-79 5116. 2 1360. (7.4... 7. 7) R. A. 9" 24 io' Decl. + 11 8' A and B 1910.164 243?! 14^45 .167 242.7 243-2 I4-3I 14.42 1910.17 243.0 14.39 The proper motions of the large stars are given : A := 0^222 in 262?4 Bossert 0.228 in 261.7 Glasgow 8 = 0.246 in 243.5 Bossert 0.251 in 243.8 Glasgow 166 Burnham: Measures of Proper Motion Stars As there has been no relative change in these stars in 80 years, obviously the motions must be exactly the same. In this connection I have measured two small stars for the proper motion of AB. A and C (12.0) 1910.164 6o?97 82^16 .203 70.15 81.75 1910.18 70.06 A and D (10.8) 1910. 167 57?23 .184 .203 57-24 57-15 81.95 I57"82 158.16 157.81 1910.18 57-21 157-93 About i sf are two small faint nebulae, not well denned for measurement. li 608 and star io.5m 1910.164 1264 I97"o .203 125.4 194.3 1910.18 125.9 195.6 h 609 and same star 1910.164 .203 295.2 99'.'6 98.2 1910.18 296.0 08.9 5124. Z 1364. (7-7.. -9- 2) R. A. 9" 24 59" Decl. + 20 32' A and B 1909.206 .227 .263 155.0 154.8 16.40 16.50 1909.23 155.0 16.42 A and C (n.o) 1909.206 301^82 4i''33 .227 301.95 4I-23 .263 302.35 4I-56 1909.23 302.04 41-37 The principal star (Lalande 18708) is given some proper motion : A. G. Ber. o"n8 in 201 .o There is no change in AB. If these stars have any such movement, it will soon appear in the measures of the small star. The principal star is DM (20) 2334 and not 2332 as given in Part I of the General Catalogue. 5129. fJ 909. R. A. 9" 25 25" (7.2.. .12.0) Decl. + 22 23' 1909.112 .170 .186 91. i 87.6 89.5 5'.'94 6.01 5-51 1909.16 89.4 5.82 No material change since 1879. About 20' j is h 604, but it is too large and diffused for accurate comparison with any of the stars in the field. 5131. 6 Leonis. Sh 107. (5.0. ..9. 5) R. A. 9" 25 m 32" Decl. + 10 15' 1909.263 .299 74-45 37-43 36.90 1909.28 74.38 37.16 The proper motion of the large star is wholly uncertain. Further measures of the small star will give this movement. Auwers o"oii in 320^7 Boss 0.024 in 197.8 5134. HN.29. (6.0... ii) R. A. 9" 26"' 17' Decl. + 28 54' 1911.950 12.046 12.066 25797 258.67 258.15 31-75 31.82 31-95 1912.02 258.26 31.84 The principal star has a small proper motion. The six positions by O2, Ho, Doo and fi (1840-1912) give: o"oss in 241 6 As the two positions by O2 are each on a single night, further measures should be made for a final value of the proper motion. No proper motion found in the star catalogues re- ferred to. 5145. ^ 1369. (7.0... 8.0) R. A. 9" 27"' 53' Decl. + 40 30' A and B 24"70 1908.025 .082 .249 147.7 148.8 149-3 24-51 24.77 1908.12 148.6 24.66 A and C (7-5) 1908.025 32438 117^24 .082 324-20 H7-54 .249 324-I3 H7.56 1908.12 324.24 No other late measures. "7-45 5149. 02 (App.) 102. (7. 7-.. 8. 7) R. A. 9" 28 m 36" Decl. + 14 37' 1912.867 .884 .890 42.50 42.63 43-00 48.75 1912.5 42.71 48.98 One of these stars appears to have a small proper motion ; the distance is slowly decreasing. 167 Burnham: Measures of Proper Motion Stars 5152. 2 1371. (8.0... 10. 5) R. A. 9* 29 io' Decl. + 4 27' A and C (n.8) 1910.206 27o?i7 I2i?34 .225 270.30 121.41 .260 269.83 121. 61 5225. O2(App.)io3. (8.5... 9.0) R. A. 9" 44 13' Decl. + 19 53' A and B 1908.022 124^87 78^54 .025 124.70 78.80 .063 125.01 78.46 1910.23 270.10 121.45 For proper motion of AB. Bossert o"m in 214^4 5175. 14 Leonis. HVI.76. (4.0... 9-3) R. A. 9" 34 45' Decl. + 10 26' 1909.170 42^83 83^96 1908.04 124.86 78.60 The three measures (1875-1908) give a proper motion to one of these stars: ol'odp in 26. i ( 180) As this motion may be in either, I have connected with each a 10.2 m star: A and C 1908.102 I7797 95"6i .156 177.78 95.72 159 177.72 95-65 .206 42-95 84.22 .227 43.02 83.94 .299 42.95 83.81 1908.14 177.82 95.66 B and C 1909.23 42.94 83.98 The distance by Herschel in 1783 is much too small. The 1908. 102 23o?33 79?43 .156 229.78 79.18 .159 230.25 79.62 four measures by Eng and P (1881-1909 ) give for the proper motion of 14 Leonis: 0^135 in 261 ?9 From the star catalogues we have : Auwers 0^159 in 2O2?4 Boss 0.150 in 254.9 About 3 / and 23' s is the nebula h 614. This is too indefinite for accurate comparison with any small star. 1908.14 230.12 79.41 5227. O2 522- (7.3-.-II-0) R. A. 9" 44 39' Decl. + 65 21' 1907.140 123 ?4 I4?74 8.079 123.2 14.58 8.249 123.3 14.66 5195. Leonis 61. 2 1379- (7-5---"-2) R. A. 9' 38" 54* Decl. + 9 26' 1907.120 I749 9"7i .137 172.6 9-65 .140 174- I 9-67 1907.82 123.3 14.66 Change uncertain. 5280. H 149. (8.3... n.o) R. A. 9" 54" 46' Decl. + 5 36' I907-I3 J73-9 9-68 1907.006 266?7 3o"g6 .120 266.2 31.07 No material change since 1830. 5219. OS 207 rej. (7-7---IO-8) R. A. 9* 43" 17' Decl. + 17 24' 1910.206 322?o 20723 .225 321.8 20.36 .244 322.3 20.52 1907.06 266.4 31.01 This is DM (5) 2269; only yellowish. No other measures. 5285. II 472- R.A.o h 56 m 2' Dec!. + 27 57' A and B (8. 6... 8. 6) 1910.22 322.0 20.37 The principal star has a small proper motion of about 0^025 1907.022 1 19? 2 9^84 .120 120.1 9.40 in the position-angle of BA. 1907.07 119.6 9.62 168 Burnham: Measures of Proper Motion Stars 1907.022 .120 A and C (12.6) 141?! 140.1 27.90 1907.07 No other measures. 140.6 28.07 5291. H 2517. (7. 2. ..12.0) R. A. 9" 56"' 44" Decl. + 38 36' 1911.107 .142 I4S 152.7 152.7 IS3-4 44-45 44-47 152-9 44-37 1911-13 It is evident the small star does not belong to the other. The proper motion of A is given : Porter o"2O2 in 229?! A continuation of the measures will give an independent value. 5320. S 607. (8. 5... 9-7) R.A. io"o m 56' Decl. 18 44' 1911.222 12.274 145-9 145-2 9"82 9-75 145-5 9.78 The apparent change in distance since 1825 requires con- firmation. The only other more recent measures are discordant. In a low-power field nf is h 3226. This is too faint and indefinite for accurate measures. 5332. 2 1411 rej. (8.7...IO) R.A. io"2 m i5" Decl. + 32 57' 5337. 2 1412 rej. (8.o...io.o) R. A. io" 3 29' Decl. + 3 45' A and B 1910.184 295?S 3o"8i .186 .203 295-4 295-4 30.86 30-34 1910.19 295.5 30.67 A and DM (3) 2324 (8. 7) 1910.184 4944 o6'/2i .186 49.32 96.04 .203 _ 48.95 _ 96.05 1910.19 49-24 96.10 If the meridian places are correct, there is some motion in one of these stars : 1875 48?o g8".7 A. G. Alb. About 4 / and a little n are two small nebulae. h 684 and star ii.Sm 1910.206 330?8 i6i?78 .244 331.4 162.67 1910.22 33i.i 162.22 h 685 and star 10.6 m 1910.203 79^05 89^07 .206 79-20 88.94 .244 78.75 88.99 1911.104 .107 307.8 35"28 34-93 1911.11 307.7 35.10 The only other position is photographic: 1894.31 3o6?7 35"3i Scheiner 5334. fj 911. (7. 5... n. 2) R. A. io h 2 m 4i" Decl. 19 10' A and C (9.3) 1910.128 73?47 53"59 .148 .184 73.48 73.20 53-49 53.27 73.38 53-45 1910.15 From all the measures of AC (1880-1910) the corrected proper motion of AB is: o''354 in 20417 The motion derived from meridian observations is given : Radcliffe 0^364 in I95?8 Porter 0.365 in 207.2 1910.22 79-OO Other observations of this are : 1875.28 779 89^8 1892.25 78.8 84.8 89.00 in in Wn Eng. 5342. X Hydrae. P 593- (3-8.--I3-5) R.A. io"4 m 44' Decl. ii 46' 1910.206 10.280 11.222 ii56 3 "5.30 "5-50 55"68 55-72 56.01 1910.57 115.48 55-80 Omitting my position of 1878, which is from a single night, the three measures on 8n give for the proper motion of X Hydrae: o?2io in 241 ?7 From meridian observations : Auwers 0*229 in 25i?7 Boss 0.222 in 245.2 Newcomb 0.219 in 246.3 5343. (10.5... 10. 5) R. A. 10" 4 m 54' Decl. + 10 36' 1907.022 .102 i857 185.7 73.30 73-56 1907.06 185.7 73-43 169 Burnham: Measures of Proper Motion Stars 5356. 2 1415. (6. i... 7.0) R. A. io" 8" n' Decl. + 71 40' A and C (10.0) 1909.148 io?23 isoroo .170 10.10 149.65 .186 10.89 '49-49 5441. 2 1438 rej. (9.0.. .11.0) R. A. 10" 22'" 7' Decl. + 13 47' 1910.186 248?! I5"i7 .203 247.4 15.06 .206 248.0 14.80 1910.20 247.8 15.01 The DM number in Part I of the General Catalogue should be 2265 instead of 2261. No early measures. 5451. 2 1440. (8.0... 9. 5) R. A. io" 23'" 45' Decl. 3 18' 1909.206 347 ?2 is".20 .227 347.1 15.27 .244 347.0 15.20 1909.17 10.41 149.71 I do not find any proper motion given A from meridian ob- servations. The only direct measures are: I879.5S 964 I48"57 2n Bl. Further measures should be made. 5376. H 3324- (9-4- -.9.9) R.A. lo'ii" 1 ^' Decl. + 68 44' 1907.140 199 5 i8'.'58 .197 199.0 18.62 1909.23 347.1 15.22 No other recent measures. 5466. H 2534. (5-7... 12. 3) R. A. 10" 26 14' Decl. + 41 2' I9IO.2O6 322?7 22:'8l .222 322.9 22.53 .225 324.1 22. 6l 1907.17 199.2 18.60 Probably unchanged. 5418. P 1322. (7.0... 13. 3) R. A. 10" i8 m i' Decl. + 2 59' A and C (7.0) 191 1 . 107 64?oo 2o8"so .142 64.12 209.29 .181 64.28 209.01 .184 64.23 209.23 1910.22 323.2 22.65 The measures, 1879-1910, should give a very accurate value of the proper motion of the principal star : o"ii7 in 26i?6 Other values are: Groombridge o"is8 in 272?5 Boss 0.142 in 267.2 Bossert 0.113 in 270.0 5470. ^ 1445. (8.8... 1 1. 8) R. A. 10" 26 35" Decl. o 15' 1907.137 i6o?2 2"66 .197 158.9 2.70 .258 160.6 2.99 1911.15 64.16 209.01 No suitable third star to connect with either. From a com- parison of the A. G. and P positions of AC, one of these stars has a proper motion of o"io6 in 8o?5 ( 180) 5430. 2 1433 rej. (8. 6. ..10.4) R. A. io* 20 20* Decl. 3 26' 1907.137 262?$ 23*59 .197 262.2 23.28 .258 262.2 22.77 1907.20 262.3 23.21 No other measures. 5436. 45 Leonis. 11832. (6.2. ..12.1) R. A. io" 21" 18' Decl. + 10" 23' 1911.107 I3i?io 37^84 .142 I3L55 38.75 .162 131.80 38.52 1907.20 159.9 2.78 No material change. 5475. 2. 1444 rej. (8. 2. ..io. 6) R. A. 10" 27 27' Decl. + 64 13' 1907.140 266?o I7"59 10.091 266.2 17.78 10.093 266.5 18.04 1911.14 131.48 38.37 Further measures needed for the proper motion of A. Auwcrs oTo22 in 3I2?7 Boss 0.014 in 120.7 1909.11 266.2 17.80 No other measures. 170 Burnham: Measures of Proper Motion Stars 5477. S 610. (8.3... 8. 5) R. A. 10" 28'" 3' Decl. 17 13' 1907.271 8.192 8.214 42.9 42.9 ios"43 105.21 105.07 1907.89 43-1 105.24 Change from proper motion. Further measures should be made. The meridian positions give: 1850 402 I02"s O. Arg. S 1894.3 42.3 105.13 A. G. Wash 5500. O2223r Decl. + 71 40' A and C (10.0) 1909- 148 io23 isofoo .170 10.10 149.65 .186 10.89 149.49 5441. 2 1438 rej. (9.0... H. o) R. A. 10" 22'" 7' Decl. + 13 47' 1910.186 248?! 15:17 .203 247.4 15.06 .206 248.0 14.80 1910.20 247.8 15.01 The DM number in Part I of the General Catalogue should be 2265 instead of 2261. No early measures. 5451. 2 1440. (8.0... 9. 5) R. A. 10" 23'" 45' Decl. 3 18' 1009.206 34 7?2 15:20 227 347-1 15-27 244 347-0 15.20 1909.17 10.41 149.71 I do not find any proper motion given A from meridian ob- servations. The only direct measures are : I879.SS 964 I48''57 2n BI. Further measures should be made. 5376. H 3324. (9.4... 9.9) R.A. w"ii m i9' Decl. + 68 44' 1907.140 I99?5 18:58 .197 199.0 18.62 1909-23 347-1 15.22 No other recent measures. 5466. H2534- (5.7... 12.3) R. A. 10" 26 14' Decl. + 41 2' I9I0.206 322?7 221'Sl .222 322.9 22.53 .225 324.1 22. 6l 1907.17 199-2 18.60 Probably unchanged. 5418. P 1322. (7.0... 13. 3) R. A. 10* i8 m i' Decl. + 2 59' A and C (7.0) 1911.107 64^00 208:50 .142 64.12 209.29 .181 64.28 209.01 .184 64.23 209.23 1910.22 323.2 22.65 The measures, 1879-1910, should give a very accurate value of the proper motion of the principal star: 0:117 in 26i?6 Other values are: Groombridge o''is8 in 272?5 Boss 0.142 in 267.2 Bossert 0.113 in 270.0 5470. 2 1445. (8.8... 1 1. 8) R.A. io h 26 m 35 < Decl. o 15' 1907.137 i6b?2 2:66 .197 158-9 2.70 .258 160.6 2.99 1911.15 64.16 209.01 No suitable third star to connect with either. From a com- parison of the A. G. and positions of AC, one of these stars has a proper motion of 0^106 in 8o?5 ( 180) 5430. 2 1433 rej. (8.6... 10.4) R. A. 10" 20 1 " 20* Decl. 3 26' 1907.137 262^5 23:59 .J97 262.2 23.28 .258 262.2 22.77 1907.20 262.3 23.21 No other measures. 5436. 45 Leonis. H 832. (6.2... 12.1) R. A. 10" 21" 18' Decl. + 10 23' 1911.107 131? 10 37:84 .142 131.55 38.75 .162 131.80 38.52 1907.20 159.9 2.78 No material change. 5475. ^ 1444 rej. (8. 2... 10.6) R. A. 10" 27 m 27' Decl. + 64 13' 1907.140 266?o 17:59 10.091 266.2 17.78 10.093 266.5 18.04 1911.14 131-48 38.37 Further measures needed for the proper motion of A. Auwcrs 0:022 in 3I2?7 Boss 0.014 in 120.7 1909.11 266.2 17.80 No other measures. 170 Bnrnham: Measures of Proper Motion Stars 5477. S 610. (8.3... 8.5) R. A. 10" 28'" 3" Decl. 17 13' 1907.271 43S ios"43 8.192 42.9 105.21 8.214 42.9 105.07 A and C (10.4) 1908.974 57oo I93"97 9.109 57.67 I94-9I 9.112 57.90 194-25 1909.06 57.82 194.38 There is no sensible motion in AB since 2. For the distant star we have : 1880.63 57?7i I94!'53 2n Bl. The proper motion of A from meridian positions is not likely to be correct. A. G. Harv. 0^04 in 360 5535. 40 Lconis Min. ^913. (6.0... 13.0) R.A. io h 36 m 26' Decl. + 26 57' 1909.206 ii6?5 I3''oo .227 116.6 13.91 .299 116.3 13-73 1907.89 43.1 105.24 Change from proper motion. Further measures should be made. The meridian positions give: 1850 40?2 I02"s O. Arg. S 1894.3 42.3 105.13 A. G. Wash 5500. O2223rsy. IT, p. 163. 5695. 0223 1 ;. (7. 7... 8. 7) R. A. H* 4" y? Decl. + 31 6' A and C (8.0) 1907.997 336?47 162777 8.057 8.102 8.118 336.35 336.53 336.62 162.82 163-13 163.11 1908.07 336.49 162.96 Rejecting my single measure in 1904, the four mean results by O2, H2, Eng and P (1881-1908) give for the apparent proper motion of A : 07641 in io6?3 It would be unsafe to assume that a star of the magnitude of C has no proper motion, though the chances are that will prove to be the case. I have measured the nearest faint star for the settlement of this matter hereafter. C and c (12.7) 1908. 159 34?82 I34"5o .249 34.85 134-36 1908.20 34.83 134.43 Other values of the proper motion of A are : Stumpe 07557 in iu?2 Paris 0.605 in no.8 Porter 0.546 in 110.2 5699. O2(App.)io8. (6. 2... 7.0) R.A. 11* 6*2* Decl. + 36 28' 1910. 128 70^70 134798 .148 .167 .184 70.45 70.53 70.57 135-29 135.63 135.46 1910.16 70.56 135.34 174 Burnham: Measures of Proper Motion Stars Assuming that B has no sensible motion, the four positions by A, Fr and (3 (1876-1910) give for the proper motion of A: o''227 in 230^2 To determine this hereafter, I have connected a faint star : A and C (12.2) 1910.184 i6o?04 87782 .186 .225 160.66 160.53 88.03 88.89 160.41 88.25 1825 1875 1910.2 1910.20 B and DM (36) 2170 (8.0) A R. A. 2 m 52^4 A Decl. 5772 Weisse 2 53.2 59.2 A. G. Lund 2 53-3 60.4 P 5707. 2 1517- (7- 3-.- 7- 3) R. A. ii n 7"'24" Decl. + 20 47' AB and C (10.4) 1910.091 093 .107 ioi?93 102.10 102.05 2Il''z8 211.25 211.53 1910.10 102.03 211.35 The prior positions by O2 depend upon a single night each. From a comparison with the present measures we have an independent value of the proper motion of AB : o"4Oi in 251?! The later determinations from meridian observations are : A. G. Ber. 07417 in 252?3 Porter 0.425 in 251.8 5708. Arg. 24. (9.0... 9. 2) R. A. Ii n 7 m 36' Decl. 15 19' 1910.164 .206 .244 351.2 350.1 351.2 I776o 17.91 I7.5I 1910.20 350.8 17.67 h 837, which should be about 15' distant and nearly p Arg. 24, was not found ; doubtful in Dreyer. 5709. 8 Lconis. P 1282. (2. 5. ..9.1) R. A. n b 7 I "43 t Decl. + 21 11' A and BC 1907.102 344?4 188758 .120 173 344-1 344-4 188.63 188.79 1907.13 1911.260 -315 344-3 344-30 344-05 188.67 189744 189.24 1911.29 344-17 189.34 1911.222 .260 A and a (12.5) 40?93 40.00 95-17 95.67 1911.24 40.91 95-42 An earlier measure of this star, not given in the General Catalogue, is : 1879.26 44?35 9S"38 2n P". From the two positions of Ao (1879-1911) and the seven of A and BC (1850-1911) we have for the proper motion of 8 Leonis: Aando R. A. + 07140 Decl. 07130 AandBC +0.145 0.119 Therefore the motion of the large star is : Measures 07189 in I3i?2 From the star catalogues we have: Auwers 0.181 in 131.5 Newcomb 0.206 in 133.0 Boss 0.207 in 134.4 5721. O2(App.)ioo. (7. 4... 8.0) R. A. ii9 m i' Decl. +46 31' 1910.128 .148 .167 257-40 257.38 257-53 80^25 80.11 80.20 1910.15 257-44 80.19 Change in distance. One of these stars has a proper motion of about 07038 along the line joining the components. 5727. H 2564. (9. 3... 10. 9) R. A. n"io m 3' Decl. + 42 55' No micrometer measures of this pair, but from the proved accuracy of the astrographic positions at Helsingfors, the fol- lowing is sufficient at this time : 1895.32 I27?9 32^33 Donner. 5729. 4> Leonis. Sh 121. (4. 6... 8. 5) R. A. 1 1" 10 34' Decl. 3 o' 1907.997 8.000 8.022 8.039 288.65 288.95 288.33 97786 98.26 98.44 98-34 1908.01 288.60 98.23 In computing the proper motion, the measures by H and Sh cannot be used for obvious reasons. The four positions by Eng and P (1881-1908) give for the apparent motion of the large star : 07123 in 27i?7 The micrometer measures, with the relation of these stars in Weisse, give a larger value : 07147 in 275?6 175 Biirultain: Measures of Proper Motion Stars Other values of the motion of A are : Newcotnb (Stand.) o"iao in 246^0 Newcomb (Fund.) 0.114 in 251.2 Auwers 0.126 in 259.1 Boss 0.121 in 248.6 5732. p 600. (6. 5... 12.0) R. A. 1 1* io m 53' Decl. 6 29' A and C (8.5) 1910.148 97?78 59? 16 .167 07.50 59.08 .184 98.10 59.69 1910.17 97.79 59.31 One of these stars has a small proper motion. 5733. O2 233. (6. 9... 9. 8) R. A. ii"n m 26 i Decl. + 67 20' A and C (12.0) 1912.066 .162 .164 303.47 303.37 41 "54 41.83 41.66 1912.13 303.39 41-68 For the proper motion of the principal star; no other measures. Schroeter oTor)5 in 253?4 5735. v Ursae. X 1524. (3-7-..io.i) R.A. ii*i2 m o' Decl. + 33 45' A and C (13.6) 1911.947 146783 154798 12.046 145.30 153.96 12.066 146.33 154.82 1912.02 146.15 IS4-S9 The proper motion of A is given from meridian observations : Auwers (F. C.) 07052 in 6!8 Auwers (cor'd.) 0.050 in 315.9 Newcomb (F. C.) 0.034 in 319-6 Boss 0.027 in 303.7 No sensible change in AB since 1830. No other measures of C. 5746. 2i528r#;. (8. 2. ..ii. 8) R. A. 1 1' 13- 22' Decl. + 10 36' 1912.236 274 .312 2l8?I 217.7 217.9 I973S 19-33 19.28 1912.27 217.9 19.33 The only earlier measure is of recent date. 5768. Wilson 9. R. A. 1 1" 18 Decl. 9 50' I failed to find this in or near the rough place given by Wilson. It should be 4' j of P 26. About 3 m p P 26, and in the field with a 6.3m star, Lalande 21618, are two small nebulae, the nearest a little the brightest, with some central condensation in the other. L 21618 and h 862 1910.128 295770 iio"57 .164 295.83 110.48 1910.15 295.76 110.52 L 21618 and h 863 1910.128 4O?2O 176789 .164 40.20 176.12 1910.15 Observed by Engelhardt : 1893.22 1893.22 296^1 40.5 40.20 io67i 177-9 176.50 in in Eng Eng. 5775. 81 Leonis. 114433. (6.0... 10.2) R. A. 1 1" 19 2i' Decl. + 17 8' 1907.006 .120 .140 348?8 347-7 349-0 55-95 56.06 1907.09 348.5 56.05 Change from proper motion of A. From the measures of the small star (1840-1907) the proper motion of 81 Leonis is: of 142 in 268?8 From the star catalogues : Auwers 0^172 in 269^0 Boss 0.144 '" 279.2 5789. H 499. (8. 5... 10. 4) R.A. ii h 2i"'44 i Decl. + 36 58' 1908.192 9.164 9.206 253.2 253.8 253.8 40"57 40.27 40.21 1908.85 No other measures. 253-6 40-35 5790. T Leonis. "S. 19, App. I. (5.0... 7.0) R. A. n" 21" 46' Decl. + 3 31' A and B 1910.280 I7482 92708 .299 175.02 91.86 .318 174-56 91-63 .320 174-29 91-90 1910.30 174.67 91.87 176 Burnham: Measures of Proper Motion Stars Assuming no motion in B, the measures of En, A and P (1863-1910) give for the apparent motion of A : 0*109 in 104^0 This motion from meridian positions seems to be very un- certain : Auwers o"oi6 in 248?! Boss 0.027 in 134.3 Newcomb 0.021 in 142.6 For determining hereafter the motion of B, if any, I have connected a faint star: B and C (13.3) 1910.280 233? 13 106*46 .318 234.13 105.98 337 233.33 106.94 1910.31 233.53 106.46 There is a 14 m star 10" or 15" from C. A and DM (3) 2507 (9.3) 1875 AR. A. + si!i6 ADecl. 28*2 1910.3 50.94 30.1 B and DM (3) 2507 1875 A R. A. + 50! 26 A Decl. + 63*8 1910.3 50.27 61.6 5801. OZ(App.)m. (7.0. ..9.0) R. A. n" 23 44" Decl. + 30 38' 1909.206 .227 .244 33^29 33.16 33.48 66"o8 67.24 67.03 1909.23 33.31 67.08 Without change. No third star available for investigating the proper motion of A. Porter 0*229 in 2oo?5 5809. H 500. R. A. 1 1* 25 25" (9. 5... 9.7) Decl. + 36 32' 1909.206 .227 27?8 27.9 25*13 25.04 A. G. Alb. A. G. Alb. 5793. 57 Ursae Maj. 2 1543- (5-2. ..8. 2) R. A. 1 1" 22 37' Decl. + 40 o' A and C (11.5) 1909.936 9?oo 10.091 9.10 10.093 9-00 216.76 216.65 1910.04 9.03 216.55 The proper motion of AB is evidently very small: 1879.62 8?6i 216*51 2n Bl. The 8 m star, DM (40) 2432, 400" distant from 57 Ursae Maj. in the direction of 236, has two small stars near for which we have positions in the Astrographic Catalogue. DM (40) 2432 and star 10.3 m 1909.936 183^79 97"94 10.091 184.05 97.85 10.093 184.03 98.06 1910.04 183.96 97-95 DM (40) 2432 and star 10.4 m 1909.936 167^79 128*85 10.091 167.82 128.24 10.093 167.72 128.52 167.78 128.54 1910.04 The other positions are : 1895.31 184?! 1895-31 167.8 Meridian values of the proper motion of 57 Ursae are : Boss 0*051 in 280?! Auwers 0.079 in 286.9 98*43 128.59 Donner Donner. 1909.22 Probably fixed. 27.8 25.08 5814. H 2574. (9. 5... 9-5) R. A. 11" 25"' 55" Decl. + 53 41' A and B 1009.112 .186 78.2 36*67 36.78 1909.15 78.0 36.72 No early measures. The nebula referred to by Herschel is very diffused. H 2574 (B) and h 908 1909.112 is?o 129*33 .186 15.4 129.43 I909-I5 15-2 129.38 5833. 90 Leonis. R. A. 1 1" 28-" 28' 1552- (6.0... 7. 3) Decl. + 17 28' A and C (8.9) 1909.071 234?88 62*56 .112 234.77 62.84 .148 234.67 63.02 1909.11 234.77 62.81 Change uncertain, h 924 is 2j^ m / and 5' s; faint and diffused. The proper motion of 90 Leonis, if any, is small: Auwers 0*033 in 282?o Boss o.on in 248.2 5853. H 183. (8... 13. 5) R. A. 1 1" 31 48' Decl. + 13 37' 1907.006 .120 io? 7 10.7 95-03 95-16 1907.06 10.7 95.09 Only a little yellowish. No other measures. 177 \ Burnham: Measures of Proper Motion Stars 5973. 23076. (9- 3..- 9-8) R. A. 1 1* 50"' 30' Decl. 4 33' - A and DM (69) 643 (9.1) 1911.219 87?i8 126704 .222 87.33 126.21 1907.258 538 5758 7-271 53-8 5-74 8.192 55-1 5-75 1911.22 87.25 126.12 From meridian observations of the two larger stars : I907-57 54-2 5-69 No other measures since 1867. Fixed. 5974. 918. R.A.ii'si-37' Decl. + 32 57' The place given in the General Catalogue is that of the 8 m star Lalande 22406 which is I />. The correct place of 918, DM (33) 2174 is given above. Three nebulae by d' Arrest precede the double. One of them, Dreyer 3095, is 31^9 /> and 8*9 n. h 1027 is about 20' distant />; too faint and diffused for accurate comparison. There is 1875 I79?2 12977 A. G. Chris. 1900 179.6 126.9 Greenwich 1875 88.0 127.0 A. G. Chris. 1900 87.3 127.3 Greenwich. 6035. 2 1602. (7. 5... 9.0) R. A. 12" i m 7- Decl. + 69 45' A and B 1911.219 I79?2 16751 .222 I79.I 16.43 .260 179.4 16.34 a 6" pair of small stars in 248^7 : 4879. 6026. O2 244. R.A.I i" 59" 29' Decl. + 53 33' h 1085 is about 15' sf O2 244. h 1085 is about 15' sf O2 244. 1910.091 26o?4 48723 093 258.0 48.13 .107 259-7 47-93 1911.23 179.2 16.43 From the measures of 2, A, H2 and (1831-1911) the proper motion of A is: It is not probable that B has any sensible movement which would change this result, but I have connected a distant faint star: A and C (11.2) 1911.219 3i7i8 I557I6 .222 317.13 154.88 .260 316.80 155.46 1910.10 259.4 48.10 h 1085 and star n.8 m 1910.091 77?8 122^71 093 77-4 124.20 .107 77.4 123.31 i9".23 317-04 I55-I7 6036. H 2596. R. A. 12" i m 15' Decl. + 43 46' 1910.10 77.5 123.41 The prior positions give : 1891.49 259?5 5172 in Eng H 2596 (A) and h 1088 1911.219 239?3 22477 .222 239.3 225-0 1891.49 77.8 121. i in Eng. 6027. 2 1599. (7.o...io.o) R. A. 1 1" 59- 30' Decl. + 69 27' A and C (12.0) 1911.200 331 ?88 106727 .219 331.85 105.58 .323 331.67 105.58 1911.22 239.3 224.8 h 1088 is brighter in the middle, and elongated in 133. II 2596 (A) and h 1091 191 1 . 22 A R. A. 25:5 A Decl. IO276 h 1091 is small, round and diffused. This is the one referred to by Herschcl. 1911.21 331.80 105.81 A and DM (69) 641 (7.5) 1911.200 I7995 126779 .219 17975 126.08 R.A. I2"3 m io' Decl. + 11 58' 1911.142 3o6?4 9764 .164 306.8 9.67 .222 179.77 126.79 1911.15 306.6 9.65 1911.21 179.82 126.85 No change since 1830. 180 Burnham: Measures of Proper Motion Stars 6050. 2 1605. (8.0... 8. 5) R. A. 12" 4 m 19' Dec!. i 34' 1909.266 278?8 23"63 .302 278.8 23.77 .304 278.8 23.82 6068. 2. 1609. (7- 7-.. 9- 5) R. A. I2 n 5'"4i' Decl. + 51 30' A and C (12.6) 1911.219 I46?3o 68T53 .222 145.7 68.53 .260 146.05 68.64 1909.29 278.8 23.74 Without change. 6052. 23079- (8. 7... 10. 7) R.A. I2 6 4 m 32 Decl. 4 5' 1910. 186 87?7& J 4''9 2 .206 87.23 14.79 .244 86.88 14.98 1911.23 146.02 68.57 The alleged proper motion of A needs confirmation. A. G. Harv. o"l4O in 27o?o No change in AB. No other measures of C. 6083. yirginis 78. H 203. (6. 8... 12. 7) R.A. 12" 8 m 6' Decl. 5 3' A and B 1909.112 353?! 24^88 .186 351.4 25.09 .227 352.6 25.30 1910.21 87.29 14.90 In the General Catalogue this is called SD (4) 3246; it ould be (3) 3246. No change since 1868. 6064. 2 1608. (7. 5... 7- 7) R. A. 12" s" 1 31' Decl. + 54 6' 1909.263 223?2 II?79 .299 222.6 11.89 .304 223.0 12.13 1909.17 352.4 25.09 Rejecting the single measure of 1878, the other positions give for the proper motion of A : Measures o"i5i in 328?3 Porter 0.184 in 317.7 Further measures should be made for a final correction to the proper motion. In this interest, I have added a third 1 1 m star. A and C 1909.112 I94?83 74-'i6 .186 195.18 74-55 .227 195-05 74-54 1909.29 222.9 11-94 No third star near enough. Distance increasing. Bossert o"i7 in 180 6067. Sh 136. (6.0... 8.0) R. A. 12' 5 36' Decl. + 82 23' 1911.162 75?39 66"8i .181 75.26 66.46 .184 75-45 66.77 .200 75-23 66.95 1909.17 195.02 74.42 6084. S 1616. (7-5- --9 7) R. A. 12" 8 m 19" Decl. + 9 27' A and C (9- 5) 1909.112 293? 10 154*91 .148 293.00 155-11 .151 293.00 154-36 1911.18 75-33 66.75 The proper motion of the principal star is extremely un- :rtain in direction and amount. Groombridge o"oi2 in 345?9 Greenwich (1890) 0.045 m 304.0 Greenwich (1900) 0.016 in 296.5 Boss 0.019 in 267.0 The relative motion of A with respect to B from the meas- res (1876-1911) is: 0^049 in 244? i 1909.14 293.03 154-79 These measures should be repeated at a later date for the true proper motion of A, as the first position by Dembowski depends upon a single night. The three measures (1864-1909) give: 0^147 in i47?4 Other values from transit observations are : Porter o"i40 in i6i?5 Paris 0.171 in 180.0 181 Burnham: Measures of Proper Motion Stars A and DM (9) 2600 (9.0) 1884.1 ADecl. I39T9 A. G. Leip. 1901. i 136.7 p 6133. ii Comae. Ho 52. (5.0. ..13.0) R. A. 12" 14" 39' Decl. + 18 27' 1910.148 44?! 9728 244 43-9 9-35 280 43.4 9.51 6090. 2, 1619. (7. 5... 7. 8) R.A. i2 b 8 n 'S9' Decl. 6 35' A and B 1910.318 28o?S 7*42 .320 278.7 7.21 337 279.9 7-23 1910.22 43.8 9.38 Some relative change, and perhaps a system of the 61 Cy% type. No third star available. The proper motion of n Comae is given: Auwers o7l66 in 3O2?8 Bossert 0.145 in 308.3 1910.32 279.7 7.29 Another value of the proper motion of AB is : Porter 07248 in 266^7 For an independent determination of this motion, I have :onnected the 9.5 m star, SD (6) 3533: A and C 1910.299 I77?6s 98798 .318 177.40 99.32 .320 177.27 99.35 6144. H 518. R. A. 12" 15"- 56" Decl. + 29 49' The absence of any description in Herschel makes the iden fication somewhat uncertain, but it is probably the ps measured : A and B (10.7.. .11.5) 1909.304 323 ?6 22788 1910.31 177.44 99-22 6124. H 2609. R. A. 12" I2 ra 18' Decl. + 5 55' The R. A. in the General Catalogue is i m too large. The )bject referred to by Herschel is h 1178. H 2609 and h 1178 H 518 and h 1205 1909.304 357?2 213^0 No other measures, h 1206 is in the same vicinity. 6145. 02 247 n>/. (7.0... 13. 5) R. A. I2"i6 m n > Decl. + 3 58' 1909.266 340?9 n78s .304 342.7 11.77 342 340.8 11.77 1910.10 AR. A. 38:5 ADecl. 42*35 6128. ^i6yrej. (8. 3... 10.8) R. A. 12" 13" 58' Decl. 13 27' 1909.304 278?7 15773 .342 278.2 15.73 .378 278.1 15.42 I909-30 341-5 ".So The apparent change, in both distance and angle since 189 indicates some proper motion in A. 6147. 17 yirginis. 21636. (6. 2... 9.0) R. A. 12" 16 26' Decl. + 5 58' 1910.091 336?58 20736 1909.34 278.3 15.63 .107 336.68 20.16 No other measures. 6132. H 207. (10.5. ..10. 6) R. A. 12" 14 35' Decl. + 15 8' 1909. 186 ioo?8 23727 .227 100.9 23.72 1910.10 .(>. 63 20.26 No material change. The proper motion of 17 yirginis is : Auwers o"i95 in 254?o Bossert 0.189 in 251.4 Glasgow 0.203 in 233.3 Boss 0.180 in 250.6 About 15' sf 17 yirginis is a small, round nebula, discovere by d'Arrest. Dreyer 4324 and star 10.7 m 1909.21 100.8 23.50 No other measures. About 15' nf H 207 are h 1198 and h 1910.091 6s?2 226786 .107 65.8 226.04 199; too diffused for accurate measures. 1910.10 65.5 226.45 182 Burnham: Measures of Proper Motion Stars 6154. H 209. (9.3... 9- 6) R. A. 12" 17 46' Decl. 2 23' 1910.128 I48?3 23"8s .148 146.6 23.84 .164 146.8 23.81 6192. Sh 146. R. A. i2 B 25 m 7 s Decl. + 1 59' A and C (7. 2... 8.0) 1912.351 29o?03 49'.'s6 .353 289.68 49-51 .389 289.62 49.63 1910.15 147.2 23.83 lange in distance? In the recent measures by Zinner this is erroneously called A 79, another pair 3 / and l /2 s. 1912.36 289.78 There is no evidence of relative motion 49-57 since the measure 6156. OS 248 rej. R.A. i2 n iS'"4 s Decl. + 6 38' Three nebulae, h 1213, h 1215 and h 1222 precede the O2 star, the nearest about 50' p and 4' n. h 1215 and star 10.3 m 1911.219 73 ?6 204^9 h 1222 and same star 1911.164 174^6 oo''6 .219 174.3 9i.4 1911.19 174-4 For the last there is an earlier position : 1893.27 I74?6 9i"3 Kobold 6181. 02 251. R. A. 12" 23 9" Decl. + 32 3' No apparent elongation. About 30' distant sp is h 1258. This in the DM is (32) 2246 (9.5). No comparison star near. 6183. 8 Corvi. Sh 145. (3.0. ..8. 7) R. A. 12" 23 40* Decl. 15 51' 1910.318 337 340 2i48 214.4 215.0 24.23 24.15 1910.33 214.7 24.15 No third star near; common proper motion. A and SD(is)3485 1900 AR. A.67f6 ADecl. II3"8 A. G. Wash. 1910.34 67.6 115.8 3 The proper motion of 8 Corvi is given: Auwers 0*261 in 240?! Bossert 0.251 in 233.4 Boss 0.252 in 235.5 Newcomb 0.251 in 233.7 of OS in 1860. There is a new companion to the principal star, not hereto- fore seen: A and B (12.3) I9I2.35I 3346 4"65 353 335-6 4.70 -389 339-4 4-51 1912.36 336.5 4.62 6211. 2 1658. (8.0... 9.8) R.A. I2 h 29 ra o" Decl. + 8 /' A and C (8.2) 1909.071 .148 .186 260.40 260.45 109.08 109.22 1909.13 260.33 I09-I5 Comparing this with the O2 measures, we have for the apparent proper motion of A, assuming C to be fixed : o"2i3 in H7?4 h 1329 and star 12.3 m 1909.071 i8s?3 82^67 .148 185.7 82.03 1909.11 185.5 This is i m / and 13' of ^ 1658. 6215. R. A. 12" 1908.214 .252 .266 2 1659. (8.0. 29 32" Decl. - A and C (u.o) 69? 1 2 69.40 69-30 82.35 .8.1) -11 23' 36.82 36.48 1908.24 1908.214 .252 .266 69.27 B and C iio?o8 109.90 i 10. 20 36.64 4i"7 41.14 41.04 1008.24 1908.214 .252 .266 i ro. 06 A and F I42?70 142-39 142.53 41.08 200:21 200.40 200.93 1908.24 M2.54 200.51 183 Bnrnham: Measures of Proper Motion Stars A and E 1908.214 275?8o 168780 .252 275.87 169.41 .266 275.83 169.25 E and F 1907.006 ni?o 04:10 137 110.9 93-35 .214 in. 3 93.60 1908.24 275.83 169.15 A and D 1908.214 27?6o 184:76 252 27.53 184.99 .266 27.68 184.96 1907.12 in. i 93.68 C and D 1907-214 265^6 32':45 .233 265.8 32.63 .258 265.3 32-48 1908.24 27.60 184.90 F and E 1908.214 AR. A. 290:87 A Decl. + 177:13 .252 290.76 177.42 .266 290.78 177.29 1907.23 265.6 32.52 A and C 1007.137 3o6?6 62:49 .214 306.2 62.48 233 306.4 62.54 1908.24 290.80 177.28 Struve's A, B and C are symmetrically placed in the equi- lateral triangle of large stars, DEF, the last two being Lalande 23531 and 23545. The only measures are by Dembowski: AF 1870.09 I4383 198:32 3n A 1907.19 306.4 62.50 BandC 1907.214 329?6 s6"59 -233 329-5 56.77 .258 329-0 56.67 AE 1870.99 276.33 175-51 3n A AD 1870.99 25.90 184.08 3n A FE 1870.99 301.62 342-29 3 A FE 1908.24 301.37 340.58 3n p Evidently these large stars have some proper motion as well as AB, the amount of which will more definitely appear here- after. E has an exceedingly faint companion : E and e (15.5) 1909.304 233?6 11:16 h 1327 is about 2 directly /> E, but too diffuse for measure- ment. 6218. 2 1662. (7.7...io.o) R. A. 12" 30" 16' Decl. + 57 14' 1907.217 234?o 19*72 7.271 234.3 19-65 8.039 234-9 19-70 1907-23 329-4 56.68 The meridian positions of the large stars, A, E and F, in Lament and Weisse show no material relative change, and it is at least probable that the change in AB is due to the proper motion of the smaller component. To determine this hereafter, the small stars, C and D, measured by Doolittle, are connected with the principal components. The only previous measures, of the angles at the Temple Observatory, are too discordant for use in this connection. The measures of AB by 'S and p (1830-1904) give for the apparent motion of A : o"i6r in i8?9 6229. 2 1665. (8. 5... 9.0) R. A. 12" 32 30' Decl. 4 40' 1910. 186 99?8 8:72 .206 98-3 8.97 IOO7.SI 21-1.4 10. 60 .244 99.5 8.90 Perhaps a small advance in the angle. 6225. 2 1664. (7. 7... 8.8) R. A. 12* 32" 7' Decl. 10 51' 1910.21 99.2 8.86 No change, h 1375 ' s about 15' distant, nearly /; small and bright in the middle. h 1375 and star 11.7 m 1910.186 30i?3 181:75 .206 301.2 181.63 A and B 1007.006 24i?4 23:84 .137 241.8 24.03 .214 241.3 24.19 1910.20 301.2 181.69 1907.12 241.5 24.02 AandE 1907.006 I09?35 118:85 .137 109.80 118.74 .214 109.50 118.95 ooU. o 039. (8.O...9.3J R.A. I2"32 m 33' Decl. 3 43' 1911.302 io;?93 52:37 .356 107.78 52.65 -373 107-98 52-67 1907.12 109.55 118.85 1911.34 107.90 52.56 184 Burnham: Measures of Proper Motion Stars The early distances by H and O2, each on a single night, appear to have considerable errors. The four positions (1881- 1911) give for the proper motion of A : o"o49 in 3S6?4 When further measures are made after a suitable interval, the single measure of 1881 should be rejected as the distance is doubtless too small. 6237. H 2617. (7. 9... 10. 3) R. A. 12" 34 51' Decl. + 40 47' 1907.217 38 5*23 7.271 5-8 5-34 8.039 7-8 5-Si 6263. 2 1678. (6. 3... 7-0) R. A. I2" 39"- 26' Decl. + 15 2' 1912.236 191 ?8$ 32"68 .255 191.88 32.53 .258 191.50 32-40 1912.25 igi-74 32.54 Probably a system of the 61 Cygni class. (See General Cata- logue, Part II.) Unfortunately there is no third star available for measurement. The proper motions of A and B are still uncertain. The latest by Boss is : A o'tes in 38^3 B 0.020 in 287.8 6267. O2 255 rcj. (7.0... 12.0) R. A. I2 h 40 8 Decl. + 3 7' 1907.006 3403 i8"75 .120 339-5 J9-29 .173 339-6 18.89 1907.51 5-8 S-36 No early measures. 6239. 2 1669. (6.5... 6.5) R. A. 12" 35 3' Decl. 12 21' A and C (10.3) 1911.302 233?93 59''33 .356 233.77 59-39 373 233.93 59-45 1907.10 339.8 18.98 Some change in the angle. 6268. 2 1679. (8. 5... 9.0) R. A. 12" 40 28' Decl. + 50 29' A and B 1908.060 207?4 5"/o .118 207.5 5-6o .192 208.3 5-76 1911.34 233.88 59.39 For the proper motion of AB. C is SD (12) 3675. The relative motion in AB is very small, and these stars probably form a system of the 61 Cygni class. The proper motions are given by Boss : A o"i29 in 26c>?6 B 0.117 in 271.0 6242. 27 yirginis. H VI. 81. (6. 5... 9.2) R. A. 12" 35 32' Decl. + 1 1 5' 1910.280 28i?8o 84:33 .299 281.92 84.63 .318 281.70 84.30 .320 281.55 84.41 1908.12 207.7 5-69 A and C (12.4) 1908.192 39? 10 69*89 .249 38.75 69.47 .266 39-02 69.65 1910.30 281.74 84.42 The two P measures give nearly the same proper motion of A as that in the catalogues, but a longer time interval is neces- sary for a final correction to the meridian value. Auwers o"i55 in 271?! Bossert 0.162 in 266.5 Boss 0.114 in 269.0 6259. 2 1675. (8. 3... 9.0) R. A. 12" 38 40* Decl. + 35 4' 1908.192 7?2 3o"39 8.249 7-3 30.49 9.071 7.0 30.47 1908.24 38.96 69.67 No change in AB. The third star is measured for the first time to determine hereafter the proper motion of A. A. G. Harv. 0^083 in 90 6269. A. G. 181. (9. 4... 9. 6) R. A. 1 2" 41 m 28' Decl. + 34 36' 1908.000 340?5 i"93 .079 335-5 1-69 .249 340.3 1.51 1908.11 338.8 1.71 The wrong star was examined in 1904. No other measures. 1908.50 7.2 30.45 Very little change, if any. 185 Burnhatn: Measures of Proper Motion Stars 6274. 8642. (8.6... 8.8) R. A. 12" 42 m 49' Decl. + 14 42' 1912.162 28?83 59*98 .164 28.45 60. 10 .236 28.48 60.12 The proper motions in A. G. Berlin are: A o"o6o in 289^5 B 0.042 in 270.0 As there has been no change in these stars in more than 80 years, it is evident the motions are exactly the same. A and C (8.0) 1909.340 32570 246^84 .342 325-53 246.70 359 325-83 246.63 1912.19 28.59 6o-7 No third star near for comparison. One of the nearly equal components has a small proper motion. The four positions by P and Doo on 13 n (1879-1912) give for this movement: o"o86 in i62?8 ( 180) h 1431 is 65" p and 18' s; large and diffused. 6284. 2 1682. (6. 7... 9.0) R. A. I2 1 '45 ln 8' Decl. 9 41' A and B 1911.302 304^0 3i"i2 356 305.0 30.98 -375 303.8 31-22 1009-35 325-69 246.72 C is Lalande 23970. There are no very accurate positions for comparison : 1823.44 329?4 249*67 in Sh 1826 327.6 259.2 Weisse 1870 325.2 248.7 A. G. Ber. 6292. 32 and 33 Comae. 2 23, App. I. (5. 3. ..6.1) R. A. 12" 46 m 14' Decl. + 17 43' 1910.203 49?52 I94"78 .206 49.53 195-49 .222 49.8O 195.20 225 49-95 I95-" 1911.34 304.3 31.11 The proper motion of A from the measures is : 0"04S in 35i 7 B and C (n.i) 1911.302 200^78 143*68 .356 200.74 143.68 .375 200.95 144-24 1910.21 49-70 195.15 A and DM (17) 2549 1875 AR. A. 62! 3 A Decl. 12072 A. G. Ber. 1910.19 62.2 120.4 P The proper motion of AB, if any, is very small. As there has been no material change in these stars since 1836, whatever proper motion there is, is common to both. We have from the star catalogues : A 0*050 in 270^0 Auwers 0.023 in 205.5 Boss B 0.065 in 138.8 Auwers 0.049 in 148.5 Boss 6293. II 2621. (8.8... 8.8) R. A. T2" 46 25" Decl. + 7 52' A and B 1007.120 84?7 34*84 -137 85.2 34.06 1911.34 200.82 143.87 6287. 30 Comae. H 522. (6.0. ..11.7) R. A. 12" 43- 26' Decl. + 28 12' 1912.236 I2?o8 42*67 255 12.73 42.46 .274 13.20 42.31 1912.25 12.97 42.48 The place given in Part I of the General Catalogue is that of 31 Comae, which is 2 25" following, same declination. The R. A. should be as given here. From the four fj measures of the small star (1878-1912) the proper motion of 30 Comae is: 0^067 in 295?8 This has been given from meridian positions : Auwers ofns in 287?7 Boss 0.096 in 276.7 6289. 2 1685. (6.8... 7. 3) R.A.I245"59' Decl. + 19 49' A and B 1909.342 20i?i I5"03 359 201.6 15.84 ,378 201. I 15.75 1907-13 85.0 34-90 A and C (10.5) 1907.120 I28?2 38*05 .137 129.2 38.32 1907.13 u,X 7 38.18 No other measures. 1909.36 201.3 15-84 186 Burnham: Measures of Proper Motion Stars 6302. 2 1688. (8.5... 10. o) R. A. 12" 47 S3' Dccl. + 38 37' A and C (12.3) 1912.236 35998 /6"95 359.83 77.29 .255 .312 360.06 76.04 1912.27 3S9-96 77-o6 For the supposed proper motion of AB. 6307. 2 1689. (6. 7... 9.0) R. A. 12" 49 29' Decl. + 12 9' 1909.340 .342 .359 209.7 210.6 28.49 28.75 1909.35 Change in angle. 209.9 28.62 6308. 8 yirginis. R.A. I2 h 49 m 34' Decl. + 4 3' This star is given in Part I of this work. 6309. 2 1691. (8. 2... 9.0) R. A. 12" 49 m 50' Decl. + 58" 49' 1910.206 .222 .225 275.3 276.0 18.43 18.78 1910.22 275.8 18.69 No measures since 1867. A and DM (58) 1403 (9.1) 1910.206 86? 20 13 i "08 .222 86.50 130.95 .225 86.48 130.83 1910.22 86.39 No other measures of this. 130.95 6315. ^. 1693. (9.0... 9. 7) R. A. 12" 50 36' Decl. + 7 40' 8"36 8.89 8.65 1907.006 .120 137 331.9 332-2 1907.09 No sensible motion. 331.9 8.63 6318. 2 1695. (6. 3... 8.2) R. A. I2 h 5i m 3' Decl. + 54 45' A and C (10.9) 1909.071 I4i43 l25'/o8 .109 .164 141.40 141.70 124.48 124.37 1009.11 141.51 For comparison we have : 1880.12 142^22 I23"6o 124.64 Bl. The measures indicate proper motion of A of about o"o6 in 270. The observations should be continued after a suitable interval. The proper motion from the catalogues is : Auwers o"oo4 in 27o?o Kustner 0.093 ln 266.3 Bossert 0.095 in 270.0 Boss 0.075 in 265.4 6337. 44 Virginis. 21704. (6.0... 11.2) R. A. I2 6 53 m 29' Decl. 3 10' 1912.274 .296 312 54.0 53-5 20.83 20. 79 1912.29 53.7 20. There has been no material relative change in 80 years. The proper motion is small, and apparently common to both com- ponents. Auwers 0*055 > n 280^5 Boss 0.029 in 262.0 6342. 46 yirginis. A. G. Clark 5. (5. 4.. R. A. 12" 54 25" Decl. 2 43' . 8. 2) A and C (13) 1912.236 I2I?6 .296 122. o .312 122.3 36.56 35-74 1912.28 122.0 36.02 The proper motion is small and not very certain. Auwers o"o89 in 3i6?2 Boss 0.055 in 326.9 The first measure is on a single night, and therefore entitled lo small weight. The three measures taken together show that the proper motion is not less than o"io, and that it is nearly all in declination. Further measures will give an exact value. 6359. H 2633. (9- 6... 9- 6) R. A. 12" 56" 55' Decl. + 74 21' 1909.263 .299 91?! 91.1 4.91 1909.28 No other measures. 91.1 4.93 187 Burnham: Measures of Proper Motion Stars 6371. 2 1715. (8. 6... 9. 6) R. A. 12" 58 9' Decl. + 20 2' 1910. 184 23o?4 7725 .186 229.9 7-22 .203 231.1 7.38 6412. O2 (App.) 121. (6. 5... 9. 7) R. A. 13" 5 m 12' Decl. + 62 52' 1909.071 8?95 107754 .112 9.28 107.60 .164 9.44 107.83 1910.19 230.5 7.28 Probably fixed. 6385. p 1083. R. A. 1 3* o 27' Decl. + 29 40' A and BC (6.0. . .11.5) 1909.170 216?! 6^22 .227 217.4 6.10 .263 218.5 6-04 1909.12 9.22 107.66 If the larger star has any proper motion, the other is moving with it. Greenwich o7o28 in 228?! 6414. 53 Virginis. H 2645. (5-2... 12. 5) R.A. i?s m 4f>' Decl. 15 33' A and B 1908.156 6?37 78750 1909.22 217.3 6.12 A and h 1531 9.170 6.62 79.65 9.304 7-00 79.68 1909.227 35?8 149*25 h 1531 is small and diffuse, but with some central con- densation. No proper motion found for the large star. Not in Boss' General Catalogue. 1908.88 6.66 79.28 A and C (10) 1908.156 328^38 234:'8o .192 328.14 235.23 370 328.35 234.90 6396. 8647. (7. 5... 9- 3) R. A. 13* 2" 19' Decl. 2 2' 1909.071 2i3?27 41795 .148 213.48 42.07 .164 213.52 42.00 1908.24 328.29 234.98 The distant star was at first taken for that measured by Doo- little in 1897. Subsequently that was looked for among the bright stars in this part of Virgo, but could not be found. The measures of B are continued for an independent determi- nation of the proper motion of A. The f) measures (1878- 1909.13 213.42 42.01 Probably fixed. 6405. Tirginis. 21724. (4.0... 9.0) R. A. 13' 3" 44- Decl. 4 54' A and C (9.0) 1910.167 298?6o 71*25 .203 298.45 71.08 .206 298.43 70.84 0^304 in 163?! Other values of this from meridian positions are : Auwers 07285 in i68?6 Hedrick 0.302 in 161.5 Boss 0.314 in 163.1 6425. S6 4 8. (8.0... 8.0) R. A. 13" 7 16' Decl. + 18 40' 1909.071 667 87*13 1910.19 298.49 71.06 .112 66.6 87.45 .148 66.5 87.72 The measures of this star should be continued. The proper motion of * Virginis is given : Auwers 0^074 in 240?! Newcomb 0.059 ' n 227.8 Boss 0.057 in 222.8 The Herschel nebula, II. 185, about 40" /> and 9' n, has a well- defined nucleus for measurement. Nebula and star 10.5 m 1910.203 I93?8 163725 .244 194.0 163.60 1909.11 (>*,.<, 87.43 , The cluster, h 1558, is about 10' . In the General Catalogue the Dreyer number should be 5024 instead of 5053. The latter (h 1569) is some distance following. 6431. Sh 162. (7.0... 8.0) R. A. 13" 8 39' Decl. 10 43' A and B 1910.22 193.9 163.42 For comparison we have : 1909.071 50.60 73-73 .148 49.80 74.18 .164 50.44 74.14 '875.31 192^8 i62"o Wn. 1909.13 50.28 74.02 188 Burnham: Measures of Proper Motion Stars The five positions by O2, Eng and P (1840-1909) give for the 6452. H 529. (9.3.. .n.o) proper motion of A: R. A. 13" 13 59' Decl. + 35 47' o"37i in 2is?9 But B is not a small star, and might have some movement of its own; I have therefore measured a third faint star. These small stars have a Porter Kustner large common proper motion : o'/ooo in I54?6 0.874 in 154-9 B and C (12.3) The star measured by Ball is now too distant for good 1909.071 I3497 69*10 measures. I have therefore measured a nearer star in the field. .148 135-10 68.36 .164 134-97 68.90 A and C (11.6) 1909.13 135-01 68.79 1009.170 74-70 152.50 -263 74-95 152.62 The proper motion of A from meridian observations is : .299 74-78 152.68 Porter o?388 in 219. 4 Kustner 0.395 in 216.9 1909.24 74-81 152.60 6434. 2 25, App. I. (5. 9... 6. 3) 6458. S 1735- (9-5- --9-5) R. A. 13" 9 m 23' Decl. + 67 55' R. A. 13" 15 44' Decl + 6 27' A and C (7.8) 1907.137 I09?6 3"95 1907.214 229^6 n6''5l .258 no. 6 4.10 .217 229.4 116.12 -331 109.8 3-97 .258 229.8 116.21 1907.24. IIO.O 4.01 1907.23 229.6 116.28 Without change. A and B (6.3) 1907.217 296?! I78"88 .258 296.3 178.83 6474. ^ 1740. (7-i -.7.2) 1907.24 296.2 178.85 R. A. 13" 17 33' Decl . + 3 20' The six sets of measures of AC (1835 to I 97) give for the 1911.142 753 26':6o apparent proper motion of A : .162 75-7 26.64 0:169 in 270:5 .164 76.1 26.54 C appears to have no motion in space. A and B have shown 1911.16 75-7 26.59 no relative motion since 1835, and therefore they must have the same proper motion. From the catalogues we have : A o"i57 in 274?4 Schroeter 0.157 in 271.1 Groombridge B 0.148 in 270.0 Schroeter 0.158 in 274.7 Groombridge 6442. fJ 800. (7. i. ..10. 2) R. A. 13" io ra 52' Decl. + 17 40' A and B 1907.331 m?2 2?95 9.302 9.304 110.3 in. 3 3-33 3-i8 1908.65 1909.302 .304 110.9 A and C (n.o) 958 9.20 3-15 89"3i 89.69 1909.30 9.39 89.50 The last for the proper motion of AB. No other measures. The motion of the large star is given : Krueger o''697 in H3?6 Porter 0.675 m m -9 13 No third star near enough to measure. These stars appear to make a system of the 61 Cygni type. The relative change is very slow. The proper motions are given : A 0*217 in 6?o 0.201 in 351.9 0.202 in 359.5 360.0 B 0.254 in 0.248 in 323.3 Porter Glasgow A. G. Alb. Porter Glasgow 6475. H 226. (11.9. ..13.1) R. A. 13" 17 36' Decl. + 14 38' 1909.071 .302 23.7 9.82 24.2 9.65 1909.19 Very insignificant object; no other measures, h 1595 is in a low-power field with H 226. h 1595 and DM (14) 2609 (9.3) 1909.071 .302 8i?3 81.3 107^04 107.09 1909.19 81.3 107.06 189 Burnham: Measures of Proper Motion Stars 6477. 2 1741. (8.2... 9.7) R. A. 13* i8 m 4' Decl. I 29' 1907.137 .233 .258 262?8 262.4 262.5 2493 24.92 24.78 262.6 24.* 1907.21 No change since 1828. The stars measured by Glasenapp are DM (1) 2814 and 2813: 1907.233 245?6 64^66 .258 246.0 64.83 1907.25 245.8 64.74 The only other measures are given in the General Catalogue. 6493. Z 1746. (7- 7-.. 10.3) R. A. 13" 22 1 1- Decl. + 10 5' 1907.137 233 .271 249.4 249.7 249.8 27" 1 1 26.87 27.05 1907.21 249.6 27.01 Change in distance. From the measures the proper motion of the principal star is : o"o35 in 202?9 6498. O2(App.)i23. (6. 4... 6. 8) R. A. 13" 23- 2- Decl. + 65 22' A and B 1910.280 I46?92 69706 .282 .299 146.95 147.00 69.01 68.86 1910.29 146.96 68.98 The proper motions of the large stars (Groombridge 1996 and 1997) are given from meridian positions : A o"ii7 in 295?9 Schroeter 0.071 in 317.5 Groombridge B 0.098 in 289.1 Schroeter 0.067 in 320.9 Groombridge As there is no relative change in these stars, the proper motions, if any, would be exactly the same. To determine this movement later, I have connected a faint star. B and C (12.4) 1910.280 92?23 32?93 .282 91.88 32.93 .299 92.20 32.93 1910.29 92.10 32.93 6501. R Hydrae. Ho 381. (Var...n.8) R. A. 13* 23" 10' Decl. 22 39' 1910.244 307 375 1910.31 324-7 323.9 324.5 2iT8o 21.31 21.67 21-59 The proper motion is small : Boss o7o73 in 273?! The measures of the small star will give an independent value later on. 6502. 2 1748. (8.o...ii.o) R. A. 13" 23'" 24' Decl. + 22 48' A and B i8i?9 5"85 1911.200 .219 179-7 5.89 1911.21 iSo.8 5.87 A and C (10.7) 1911.164 353?27 149778 .184 353.42 149.99 219 353.42 150-48 I9".I9 353-37 150.08 No other measures of C. A and B have a common prop motion : A. G. Ber. 07257 in 276?7 6508. 8649. (5. 5... 8.0) R.A. 13" 24" 3* Decl. + 60 34' A and BC 1911.184 .200 .219 .222 110-45 "0.35 110.55 I&^S I8I.66 l8l.94 182.07 1911.21 "0.45 181.99 No measure of this since 1824. If the measure at that tir was substantially correct, A and BC have a common prop motion. B and C make 2 1752. From meridian observations: 1875 no!4 182^7 A. G. Hels. The proper motion of the principal star is : Groombridge 0*091 in 295?5 Auwers 0.069 in 276.7 Boss 0.091 in 292.0 6511. 2 1751. (7. 5... 10. 7) R. A. 13" 24 41' Decl. + 9 56' 1907.258 9.340 9-342 58?4 59-1 57-1 5-T85 5.8o 5-94 58.2 5-86 No change. 6512. O2 268 rej. (7.0. ..12. 5) R.A. I3 b 25 m 8' Decl. + 24 51' A and B 1908.249 75 ?2 19725 .266 76.5 18.95 383 75-9 19.81 1908.30 75-9 19.34 190 Biirnham: Measures of Proper Motion Stars _ , . serv; The! direi ! A and C (7.4) 1908.249 258?42 69"83 .266 258.18 69.81 .271 258.50 69.89 6529. 8650. (8.0... 8. 7) R. A. 13" 28 9' Decl. 12 49' 1909.381 137-77 49" 10 1908.26 258.37 69.84 A and D (12.2) 10.225 137.58 49.96 10.244 136.72 49.62 10.299 I37-98 49-72 1908.249 2g?38 84"82 .266 29-35 84.44 383 29.85 84.62 1910.04 I37-SI 49-6o The change is due to the proper motion of one of the stars. 1908.30 29.53 84.63 om five positions of AC (1876 to 1908), each on three or : nights, the apparent motion of the principal star is : o"o8o in 55?s continuation of the measures of AB and AD will show her or not there is any motion in C. e proper motions by Rechenberg are : A o"o63 in 72?4 6540. H 1234. (7. 2... 10. 9) R. A. 13" 29 4* Decl. + 39 24' 1908.249 22?4 32"53 8.266 22. o 32.62 9.263 22.6 32.24 C o.oio in 173.8 6524. 02269. (6. 5... 7.0) R. A. 13" 27 26' Decl. + 35 3i' AB and C (9.0) 1910.091 332^38 n6"72 93 332.08 116.81 107 332.30 116.93 1908.59 22.3 32.46 The large star is Groombridge 2013 which is given a proper motion o''o4O in 35i?8. No early measures. 6558. 81 yirginis. ? 1763. (7-S---7-S) R. A. I3"3i m i8' Decl. 7i6' A and C (11.4) 1912.312 327S3 I4o"93 3SI 327-63 140.92 1910.10 332.25 116.82 353 327.73 141-24 s DM (35) 2461. The earlier measures are discordant in nee: 877-46 332?92 ii4'.'64 in Bl 880.05 332.65 116.53 m Bl 880.12 332.47 115.04 in Bl 880 333.3 114.3 A.G.Lund. 640 is 20' distant sf. There is a star n m, 239 : 45"8, but la too diffused for good measures. 6528. (3 114. (7. 6... 8.0) R.A. I3 h 28'"o' Decl. 8 o' 1908.252 I4i?9 1^48 .266 142.1 1.45 1912.34 327-63 141-03 No change in AB. The proper motion of 81 yirginis, if any, is so far uncertain. Auwers o"o6i in 228?2 Boss 0.019 in 248.6 6571. 2 1769- (7-3-. -9-7) R. A. 13" 32 50' Decl. + 39 47' The three 'S stars appear to have a common proper motion of about o''25, and to verify this, I have connected a third star with A and C. A and D (11.3) 1909.170 I94?8o i68"4i .244 195-45 168.55 .263 195-05 168.15 1908.26 142.0 1.46 is pair was observed by Glaisher at the Cambridge Ob- itory in 1842 who used it for comparison with Mars, e measures are of special interest as confirming the slow t motion shown by the later observations. 1909.23 195-10 168.37 C and D (8. 2. ..11.3) 1909.170 i/540 I52"o7 .244 175-88 152.26 .263 175-72 152.16 1842.33 I26?8 i"38 2n 1009.23 I75-67 152.16 191 Burnham: Measures of Proper Motion Stars The proper motion of A is given: Stumpe o7262 in 24i?3 Porter 0.242 in 239.0 Groombridge 0.247 in 238.0 6578. P 612. (6.0... 6.0) R. A. 13" 33 40" Decl. + 11 21' AB and C (11.5) 1912.236 274^78 130789 .274 274.73 130.23 .312 274.67 129.74 It is obvious from the magnitudes that this proper motion may be in either, or both. I have, therefore, connected a third star: A and C (9.9) 1908.156 33978 114704 370 340.02 113-99 1908.26 339-90 114.01 C is SD (9) 3766. 6616. P 115. (8.0. ..ii. 5) R. A. 13" 39 24' Decl. + 9 40' A and C (12.3) 1911.222 I7o?so 115712 .260 170.25 115.20 .337 170.47 114-62 1912.27 274.73 130.29 Measured for the proper motion of the binary system. This has been given : Boss o7ii2 in 264^4 6584. H 4605. (8.0... 9.7) R. A. 13' 34 m 28' Decl. 29 18' 1911.219 288?o 17729 The nebula referred to by Herschel as following H 4605 is /> 3528. 6589. 2 1774 r in the General Cata- logue, and the place given is that of DM (18) 2788 (8.7). It should be (18) 2786 (8.3), which is closely sf the other. The correct place (1880) is given here. The proper motion given in the General Catalogue is that of 2788. The principal star of S 655 has a small proper motion. Th later positions by Doo and P (1897-1911) give: 07076 in 291?! Or, if the measure by South is used: o7o62 in 292?3 A and B (8-5...io.o) 1907.348 8o?s 3 878 3 8.039 80.7 39.11 8.063 80.9 39.38 1911.18 134.1 17.87 If the principal star has any proper motion, the companion is moving with it. Unfortunately there is no third star near enough for comparison. The supposed proper motion should be confirmed. A. G. Harv. o7i72 in 305?! 6611. 8652. (8.0... 8.0) R. A. 13' 38" 59* Decl. 9 55' A and B 1908.156 I3458 49*02 .193 134-38 49-12 -370 134-80 49.01 1907.82 80.70 39.ii 1911.241 8o?6o 39756 .260 80.73 39.59 .280 80.65 39.57 1911.26 80.66 39.57 A and C (12.4) 1911.260 s?40 61757 334 5-07 62.26 1911.30 5.23 61.91 B and C 1911.260 328?7o 64766 334 328.77 65.12 1008.24 134-59 49-05 The four positions given, including South in 1829, make the apparent motion of B : o7i53 in 27?0 1911.30 328.73 64.89 Burnham: Measures of Proper Motion Stars 6662. 10 Draconis. H 3342. (4. 8... 12.0) R. A. 1 3" 47 56 s Decl. + 65 19' A and B 1911.260 334 25?o8 25-97 54^56 54-08 337 25-43 54-93 I9".3i 25-49 54-52 A and C (ii.o) 1911.260 334 337 63? 10 62.87 62.96 90T26 89.96 90.28 62.98 90.17 1911-31 Comparing the two recent positions with the single measure 1879 gives for the motion of A : AB R. A. + o:'o2i Decl. + 0^038 AC +0.049 0.063 t is evident there is some error in the unverified observa- tion, and that later on it should be rejected as all measures should be when made on a single night. If we take a mean of the two comparison stars, the proper motion of A is : 6668. 2 1788. (6.g. .-7-9) R. A. 13" 48 41 Decl. 7 28' A and C (10.8) 1907.197 2Q3.oo 127*03 8.039 293.32 126.88 8.156 293.02 126.71 1907.80 293." 126.87 A and D (n.o) 1907.197 2I5?IO I56"75 8.039 215.30 156.10 8.156 215.10 156.39 n is motion, so far as meridian positions are concerned, is wholly uncertain. Auwers 0*017 in 217^3 Boss 0.004 m 140.0 Groombridge 0.005 m 292.0 Davis o.on in 257.8 Newcomb o.oio in 223.9 6664. 02(App.)i27. (6.3... 8. 2) R. A. 13" 48 m 3' Decl. + 68 55' A and B 1912.066 65? 15 77"79 .162 .164 64.98 64.90 77-52 77-47 1912.13 65.01 77-59 B and C (13.0) 1912.066 6567 44"85 .162 65.10 45.01 .164 64.90 44-92 1912.13 65.22 44-93 The relative motion from measures to 1903 is given in the General Catalogue. Further proper motions of the large stars from Greenwich (1900) are: A o':i95 in 254?9 B 0.098 in 287.8 The faint star is connected to verify the motion of B. 1907.80 215.17 156.41 For comparison we have the following measures by Engel- hardt : AC l8 86.38 292^28 130*52 2n 1894.32 292.67 129.69 31 AD 1886.38 215.83 159-53 211 1894.32 215.68 158.75 3n Comparing a mean of the two positions with the recent measures, we have for the proper motion of the large star : From AC 0*203 in 268^6 From AD 0.182 in 246.5 The small difference is undoubtedly due to errors of observa- tion. Other values of this motion from meridian positions are: Stumpe o'.'207 in 271 ?4 Auwers 0.207 in 270.0 Porter 0.215 in 266.3 Boss 0.166 in 259.6 6670. TI Bootis. Sh 169. (2. 7... 9.0) R. A. 13" 48 m 58 s Decl. + 19 o' 1909.340 342 359 I05i5 105.23 105.80 "3"49 113-27 113.68 1909-35 105.39 113.48 The six sets of measures by OS, HS and f (1851-1909) give for the proper motion of TI Bootis: From meridian positions : Auwers o"35l in I9i?4 Boss 0.372 in 189.9 Newcomb 0.369 in 189.8 6676. 02273. (7. 5-.. 8.0) R. A. 13" 50 19' Decl. + 5 53' AB and h 1703 1910.206 236^5 238*8 .244 236.3 238.6 ..260 236.6 238.8 1910.24 236.5 238.7 h 1703 is bright, with good central condensation. 1875.40 2358 236*0 in Wn. 193 Burnham: Measures of Proper Motion Stars 6700. 2 1798- (7. 5... 9- 3) R. A. 13" S5 m 17' Decl. + 78 59' 1907.271 I33 7".2S .348 13-9 7-23 From the measures of AB by 2, A, O2, HI and (J (1830-1911), and the measures of the faint star C (1886-1911) the proper motion of A is : AB o"o44 in 164^8 AC 0.028 in 146.3 With a longer interval for AC, the results would doubtless be identical. The 6 m star, D, is known to have some proper motion ; not in Boss' General Catalogue. The measures of D from A of 2 1831 show an apparent motion of D, assuming the other to be fixed : o:'i25 in 330?8 6802. i Bootis. 2 26, App. I. (4. 9... 7. 5) R. A. I4 h ii m s6 f Decl. + 51 55' A and C(i2.7) 1911.260 197? 10 85?75 .337 197.08 85.62 -353 197-05 85.59 1907.31 13.6 7.24 No change. 6701. T yirginis. Sh 171. (4. 3... 8. 7) R. A. 13" 55 33' Decl. + 2 8' A and B 1912.164 290^03 80". 37 .236 289.70 79.60 .296 289.68 79-59 1912.23 289.80 79.85 B and C (13.0) 1912.236 2i?i2 i57"8s .274 21.20 158.99 .296 20.82 158.79 1911.32 197.08 85.65 For the common proper motion of AB. No other measures. The motion of A from the star catalogues is given : Auwers o"i7o in 300^0 Newcomb o. 160 in 301.7 Boss 0.169 in 300.6 6803. f3 1246. R. A. 14" 12"' 12" Decl. 25 16' A and C (5.5.. .11.0) 1910.414 9798 43"20 11.260 98.73 42.08 11.334 98.57 42-87 1912.27 21.05 158.54 Complete measures on the necessary number of nights to give a safe result are entirely wanting in the first half century. The measures of the small star since 1823 tend to show no relative motion. I have therefore connected a very faint star. The proper motion of T yirginis, derived from meridian positions, is uncertain in direction: Auwers 0*033 in IO2?8 Newcomb 0.033 in 151.8 Boss 0.032 in 142.0 6705. X 1797- (8.2... 8. 5) R. A. 13" s6 m 18' Decl. + 20 i' 1910.148 is8?4 2o"87 .167 159.5 20-88 .225 159.4 21-02 1911.00 98.43 43-02 From the four positions of this star (1891-1911) we have for the proper motion of AB : 0^439 in 318^9 From the catalogues : Porter 0^458 in 3O7?o Boss 0.537 in 313.4 6813. fJ 1272. (8. 4... 9.5) R. A. 14" 13 22- Decl. + 49 18' A and C (8.6) 1911.260 321 30 23"- 57 337 321.33 23.69 .353 322.10 23.92 1910.18 159. i 20.92 No change since 1828. 6801. 2 1830. (8. 5... 9.8) R. A. 14" ii" 52' Decl. + 57 13' A and C (12.5) 1911.260 8i?3o 35753 -334 80. 10 35.67 337 80.37 35-55 1911.31 80.59 35-58 A and D (5.7) 1911.260 6i?6o 141*39 .334 61.87 141-96 .337 62.00 141.59 1911.32 321-58 23.73 No change in AC. 1911.31 61.82 141.65 194 Bnrnham: Measures of Proper Motion Stars 6828. Ho 384. (6.5... 12.0) R. A. 14" is m 42" Decl. 7 32' 1907.348 51? r 27745 8.192 50.2 27.46 8.266 49.7 27.36 6869. DM (24) 2733. (9.0... 9.0) R. A. 14" 20 m ii Decl. + 24 12' A and B 1907.140 74?4 45735 197 74-5 45-26 .217 74.1 45.01 1911.164 74.30 45.11 -184 73.93 45.11 .200 74.20 45.34 The several mean results of my measures of AB are as follows : 1903.02 74?7 45721 4n 1904.31 74.5 45.02 3n 1905.42 74.1 45.22 2n 1906.12 74.1 45-19 3n 1907.18 74.3 45.21 3n 1911.18 74.1 45-19 3n It is evident that these stars have exactly the same proper motion. For star-catalogue positions see General Catalogue, Part II. A and C 1907.197 H9?8 I77"32 .217 119.5 177.17 .258 119.7 177.51 331 II9-5 177-19 1909.112 U9-50 175-29 .164 119.44 I74-9O .186 119-35 I74-96 1910.164 119.20 173.56 .167 119.20 173-49 .184 119.20 173-63 1911.142 118.83 171.97 .164 118.78 172-58 .184 119.12 172.27 .200 II8.93 172.42 The results of all my measures of AC are : 1903.02 I20?6 182730 4n 1904.32 120.2 180.57 2n 1905.42 120.0 179.34 3n 1906.18 119.9 178.56 6n 1907.25 119.6 177.3 4n 1909.15 iip-4 175-05 3n 1910.17 119.2 173.56 3n 1911.17 118.9 172.31 4n A continuation of these measures will give the proper motion of AB with the greatest accuracy. It is absolutely certain from the measures of the exceedingly faint star a that C has sensible movement. These measures give for the proper motion of AB : i?348 in I45?2 From the Berlin and Cincinnati meridian positions we have: Porter 17381 in 143^5 In the proper motion of A given on p. 1076 of the General Catalogue from the micrometer measures of AC for i".6g6 read 1^382. K I907-94 S0.3 27.42 Change from proper motion of A which should be about o"i6 in 230. Further measures will give a definite value. 6837. Z 1833. (7.0... 7.0) R. A. 14" i6 m 18' Decl. 7 13' B and C (12.3) 1910.206 i97?23 103779 .225 196.60 103.36 .260 196.23 104.09 1910.23 196.69 103.75 For the proper motion of AB. The large stars, AB, seem to belong to the 61 Cygni class. The proper motion is given : Bossert o7i2O in i8o?o Radcliffe 0.171 in 185.0 Porter 0.132 in 180.0 6840. H 2714. (7. 6... 10. 2) R. A. 14" 17"" 18' Decl. 19 15' 1909.381 279?9 24757 12.296 279.1 24.55 1910.79 279.5 24.56 The change is due to proper motion in A. Further measures after the proper time interval will give an accurate value for this movement. Battermann 0*033 in IS47 6858. H 546. (7.0. ..10.4) R. A. 14" i8 m 48' Decl. 12 49' 1911.222 43?io 40716 .241 43-io 40.10 1911.23 43.10 40.13 The other measures are of late date. h 1798 (= h 3569), which is about 10' north of H 546, is too diffused and indefinite for good measures. 6864. H 2720. (8. 8... 13. 2) R. A. 14" 19 30' Decl. + 47 i' 1907.217 29?3 2o'.'ss 8.063 31.4 20.07 9.170 31.2 20.21 1908.15 30.6 20.28 No other measures. 1 Burnham: Measures of Proper Motion Stars C and a (13.5) 1907.140 i8i?8 5s:'o4 .197 180.5 SS.i6 .258 182.4 55-74 1909.112 181.28 55.53 .164 181.31 55-49 1910.186 181.37 55-72 .244 182.10 55.59 .280 181.50 55.59 The following are the results of my measures of this star : 1906.21 i8i?8 55^91 3n 1907.20 181.6 55.61 sn 1909.14 181.3 55-Si 2n 1910.24 181.6 55.63 3n 6896. 117. (8. 3... 9. 2) R. A. 14" 24 m 43' Decl. 15 4' A and C (12.4) I9II-395 334-73 107:84 .411 335-06 107.07 414 334-50 106.90 1911.41 334.76 107.27 For proper motion of AB. Porter 0:424 in 153^2 6898. H 2725. (8.7... 10.6) R. A. 14" 24"" 52' Decl. + 55 3' 1907.140 I38?7 23:25 .217 136.2 23.59 258 138.4 23.43 1908.20 181.57 55.66 nn It is evident from the measures that C is fixed in space. 6880. tVirginis. 21846. (5. 2... 9.7) R. A. 14' 22" 2' Decl. i 41 ' A and C (12.8) 1911.164 209? 13 95-45 .200 208.98 94.89 .219 208.28 95.07 .222 208.97 95-03 1907.20 137.8 23.42 Aitken has recently found that A is a close pair (= A 16 6910. p Bootis. H 2728. (3. 8... 12. 5) R. A. 14" 26 42' Decl. + 30 54' 1912.258 336?28 48797 .274 336.03 48.86 .296 336.05 48.99 1911.20 208.84 95-II No other measures. The proper motion of Virginis is given : Auwers 0*153 in 269 3 Boss 0.134 in 265.7 Newcomb 0.135 in 268.4 6881. 2 1847. (8. 5... 9.8) R. A. 14" 22" 14' Decl. 9 40' 1907.258 26i?8 25^95 7.348 261.8 26.13 8.192 262.8 25.88 1912.27 336.12 48.94 The proper motion of the bright star given in the Gen Catalogue from the measures 1879 to 1903 is not sens changed. Measures o?i6i in 3io?8 Bossert 0.151 in 316.9 Auwers 0.166 in 318.8 Boss 0.149 in 317.6 6915. Y Bootis. 3 616. (2. 8... 12. 5) R. A. 14* 27" 15' Decl. + 38 50' 1911.164 io8?20 31:72 .222 I08.08 31.19 .241 108.20 31.37 .334 I08.4I 31-93 373 108.38 31.79 1907.60 262.1 25.99 A and SD (9) 3950 1907.258 A Decl. = :oo"8o From the measures of AB to 1903 the proper motion of A is : oTiop in no?7 6895. 2 1854 rej. (7.0. ..10.5) R. A. 14' 24" 41 Decl. + 32 20' 1912.312 256?6o 25:77 353 256.60 26.05 1911.27 108.25 31.60 The measures of this very faint star should give the prc motion of Y Bootis with a high degree of accuracy. From five P positions on 14 n (1878-1911) we have: 0:218 in 326?7 Some of the meridian results are: Auwers o7io8 in 320? 5 Boss 0.182 in 322.3 Newcomb o.rSo in 323.6 1912.33 256.60 25.91 Probably without change. 196 Burnham: Measures of Proper Motion Stars 6924. H 2732. (8.7...) R. A. 14" 28 19' Decl. + 45 37' This star has no near companion. To verify the supposed proper motion, I have connected a distant star. A and DM (45) 2192 (9.2) 1910.184 353?77 9i752 .186 354-13 92-33 -203 353-55 91-88 6954. ji Bootis. 21864. (4-9-.. 6.0) R.A. 14" 35 5 s Decl. + 16 56' A and C (10.8) 1912.164 i6o?43 126733 .236 160.25 126.48 .274 160.08 126.10 1912.22 160.25 126.30 The faint star is connected for the proper motion of it Bootis. No other measures. Auwers 07029 in 17?! Boss 0.016 in 82.8 Newcomb 0.026 in 92.8 6955. \, Bootis. 21865. (3. 5. ..3. 9) R. A. 14" 35 25' Decl. -f 14 15' AB and C (10.0) 1910.397 258762 99779 .414 258.93 99-66 .416 259.08 99.76 .436 258.63 99.30 1910.19 353-82 91.91 No exact catalogue place found for the small star. The relative places in DM give 357 : 54", which does not corre- spond to the movement of A from meridian observations. Porter 07244 in 286?7 6926. ^ 1858. (7. 2... 8.0) R.A. I4>28 m 4i' Decl. + 36 7' A and (13.0) 1910.299 311-82 36796 .318 310.73 37-11 .340 311.00 37.13 1910.32 311.18 37.07 Faint star for proper motion of A (Lalande 26599), which is given from transit positions : Paris 07213 in 283^3 Porter 0.259 in 285.7 6932. Lalande 26492. (7.0. ..10.5) R. A. 14" 24 44 s Decl. + 5 18' 1912.274 I9540 55721 .296 195-12 55-44 .312 195.83 55.40 1910.42 258.81 99.63 No early measures of the Herschel distant companion. The proper motion of the binary is : Auwers 07041 in io8?3 Porter 0.030 in 109.6 Newcomb 0.060 in 114.6 Boss 0.062 in 116.0 6977. ^ 1872. (7.0... 8.0) R. A. 14" 37 35* Decl. + 58 29' A and C (11.2) 1912.162 s8?o7 76716 .164 58.17 76.26 .236 58.35 76.20 1912.29 195-45 55-35 The only other measures are my own in 1903. 6947. H 2737. (10.4... 12. 5) R. A. 14" 33 49' Decl. + 20 31' 1909.227 26?9 10771 .302 24.7 10. 61 1912.19 58.20 76.21 For the proper motion of AB. No other measures. Porter 07253 in 142?! 6982. ^ 1874. (7. 7... 9. 2) R. A. 14" 38 i ' Decl. + 49 38' 1909.186 288?6o 267:8 .263 288.75 26-39 .266 288.63 26.29 1909.26 25.8 10.66 No other measures. I have connected the principal star of this with the two nebulae referred to by Herschel. They are too diffused for very exact measurement. H 2737 and h 1856 1909.302 341 2 15072 304 341-5 152-6 1909-30 341-3 I5I-4 H 2737 and h 1858 1909.304 I36?4 6377 1909.24 288.66 26.29 Probably unchanged. 197 Biirnham: Measures of Proper Motion Stars 6993. e Bootis. 21877. (3.0. ..6. 3) R. A. 14* 39 m 45' Decl. + 27 35' A and C (12.3) 178*37 1912.353 .411 257? 13 256.70 179.06 1912.38 256.91 178.71 The proper motion of E Bootis is given : Auwers 0*057 in 271 ?o Boss 0.048 in 279.5 Newcomb 0.048 in 281.2 6997. 2 1876. (8. i... 8. 6) R. A. 14" 40 2- Decl. 6 53' A and C (11.5) 1908.266 299^65 65*70 370 300.28 65.83 .422 300.00 65.36 1908.33 299.98 65.63 If the single measure of Ho is correct, the components of 2 1876 have a considerable proper motion ; but it does not appear to have been recognized in the star catalogues. 6999. 2 1879. (7.8. . .8.8) R. A. 14" 40 23* Decl. + 10 10' AB and C (12.1) 1910.340 205?43 56*56 3S6 205.78 56.70 375 205.28 56.84 1910.36 205.50 56.70 AB and D (10.8) 1910.340 2i7?8o 133*44 .356 218.25 133-68 .375 218.10 133.90 1910.36 218.05 I33-67 For proper motion of AB. This is given from meridian positions : Porter 0*288 in 165?$ 7034. | Bootis. Z 1888. (4. 7... 6.6) R. A. 14' 45" 51" Decl. + 19 36' A and B '63o 1907.329 351 444 .463 _.**_ 1907.41 163-4 163.6 161.5 162.7 162.8 2*37 2.81 2-34 2.51 2.32 2.47 A and C(i3-3) 1912.351 3S2?7S 6o'.'7i 353 352.31 60.29 .411 352-70 60.53 1912.37 352-59 60.51 For the proper motion of the binary system; no other meas- ures of the faint star. For the proper motion of | Bootis we have: Auwers 0*161 in 128^8 Boss 0.168 in 129.2 Newcomb 0.167 ' n 122.4 7040. 031- (8. 5... 10.2) R. A. 14" 46'" 59' Decl. + 19 13' A and C (12.5) 1910.164 165^6 .280 .299 164.4 164.0 9*57 8.89 9.06 1910.25 164.7 A and D (11.6) 1910.148 276^75 .164 .280 276.73 276.42 9-17 94:'75 94.99 95-02 1910.20 276.63 94-92 AD for the proper motion of the triple system. A. G. Ber. 0*230 in 347?9 Porter 0.223 in 343.0 7048. O2(App.)i3i. (6. 5... 7. 2) R. A. 14" 47"- 40' Decl. + o 5' A and B 1912.351 2i2?io 87*67 353 212.03 88.36 .389 211.83 87.94 1912.36 211.99 87.99 From the three positions by A and P (1873-1912) we have for the proper motion of one of these stars: 0*076 in I57?7 ( 180) To determine which, if only one, of these stars has this movement, I have connected with each a third small star : A and P 942 (9.2) 1912.351 2i8?oo 273*24 353 1912.35 1912.351 353 .389 1912.36 218.76 218.83 B and P 942 221. 77 221.98 221.92 221.89 273-54 273.39 186*52 186.33 186.17 186.34 198 Burnham: Measures of Proper Motion Stars 7060. Sh 190. (6. 3... 7. 3) R. A. 14" 50 27" Decl. 20 52' As a double star, this was first observed by Sir William Herschel in 1791, and subsequently by South and Herschel, who measured the angle and distance in 1823, and entered it as No. 190 of their catalogue of double stars. It was soon found that these stars, called seventh and eighth magnitude in Sh, had an unusually large proper motion of about 2" a year, and that there was very little relative change, thus making a system of the 61 Cygni type, with a movement in space exceeded only by that famous pair. In 1878 I measured four very small stars in the field for the purpose of getting later an independent value of the proper motion of the large star. It is practically certain that no one of these faint stars can have any sensible movement. No star of this class anywhere, not attached to and moving with a much brighter star, has ever been found to have any proper motion whatever. The recent measures of the several distant stars are as follows: A and C 1911.219 .241 285?I 284.4 26V74 26.84 1911.23 284.7 26.79 A and D 1911.184 .219 .222 II?82 II. 12 11.67 ioi"i3 101.53 101.44 I9II.2I II-S4 101.37 A and E I9II.I84 .219 .222 I9i?23 191.68 192.45 45"35 45.38 45.64 .241 192.07 45-34 I9II.2I 191.86 45-43 A and F 1911.184 .219 .222 32455 324.55 324-75 i88':49 188.87 188.67 1911.21 324-62 188.68 The change in the position-angle of C since 1878 amounts to more than 113. It is now very near B, and consequently very difficult to see and measure. Comparing these positions with those of 1878, given in the General Catalogue, we have for the proper motion of A: AC R. A. + il'o37 Decl. 1^781 AD 1.057 1.735 AE 1.032 1-768 AF 1.056 1-757 1.045 T -76o Therefore the corrected proper motion of A is : 2*047 in I493<> Some of the later determinations from meridian observations of the proper motion of the principal star are: Bonn 2"oi4 in 151^27 Porter 2.064 m T 5O-47 Boss 2.039 in '49-35 For the present relation of the large stars : A and B 1911.260 296 14 I7'?88 .280 296.73 17-56 .299 296.19 17.53 .302 296.15 17.86 1911.28 296.31 17.71 From the measure by Herschel in 1836, and seven subsequent positions by HI, Doo, and P on 26 nights, we have for the apparent motion of B : o"ioi in 326^67 Hence the real proper motion of this star is : i:'948 in H945 7063. A. G. 196. (9. i... 9. 4) R. A. 14" 50 m 52' Decl. + 51 7' 1910.340 375 139.0 139.2 25"53 25-53 1910.36 I39-I 25-53 7066. Z 1893- (8.4-..IO.O) R. A. 14" 51 io' Decl. + 29 58' igi i . 107 2375 19.50 .142 237-5 19-52 .162 237-6 19.95 .164 237.6 19.67 1911.14 237-55 19.66 The motion is rectilinear, and undoubtedly wholly due to the proper motion of the large star. The four positions by 2, A, HS and P (1832-1911) give for the proper motion of A: o''ogo in 3i8?3 No proper motion found in the star catalogues. 7071. H 561. (8. 3... 8.7) R. A. 14* 51 44' Decl. 13" 36' A and B 1910.164 .260 .299 i6a?33 162.33 162.75 I26': S 7 126.83 126.58 1910.24 162.47 126.66 1910.164 .260 .299 A and C (9. 3) 26l?00 260.73 260.95 156^50 156.31 156.36 1910.24 260.89 156.39 The SD number of A in Part I of the General Catalogue should be 4020. B and C are Nos. 4022 and 4019- The only other measures are those given in G. C. Part II. 199 Burnham: Measures of Proper Motion Stars 7074. H 2756. (8.9... 9. 2) R. A. 14" si m 54' Decl. + 8 45' I907-I37 933 27722 197 94-3 27.10 .217 92.3 27.36 7095. 2 1899. (7. 2... 9. 7) R. A. 14" 55'" 20* Decl. 2 41' 1907-137 67?! 2 8:'io .197 67.0 28.03 .258 67.6 28.13 1907.18 93.3 27.23 Probably without change. 7077. 18 Librae. 21894, (6.0... 10.2) R. A. 14" 52 m 24* Decl. 10 40' A and B 1907.258 39?6 19710 -348 39-9 I9-48 .425 39.4 19.60 .444 38.9 I9-36 1907.20 67.2 28.09 No change. The principal star is given : Bossert o7io in 180" 7097. H 2760. (9.3...IO.O) R. A. 14" ss m 48' Decl. + 6 6' 1907-137 21? i 19741 .197 21.0 19.34 I907-37 39-45 19-38 A and C (10.0) 1907.258 40?8o i6i76o .348 40.80 161.70 .425 40.93 161.47 1907.17 21.0 19.37 No early measures. 7098. 2 1901. (7. 7... 9.5) R. A. 14" ss m 59- Decl. + 31 51' 1907.197 io8?o 25^26 -214 197-5 25.47 .217 197.5 24.86 1907.34 40.84 161.59 The measures of C, with two positions by Engelhardt in 1887 and 1894, give for the proper motion of 18 Librae: o'nj in 26s?2 From the star catalogues: Auwers 0^143 in 239?8 Boss 0.131 in 234.4 A and B are moving together. 7079. P 1085. (6.0... 13. 2) R. A. 14* 52" 37' Decl. 4 30' 1907.258 23?4 9728 9.227 23.4 9.38 1907.21 197.7 25.20 Change from proper motion of A. The measures (1831- 1907) give: Measures o7o79 > n 231 ?8 A. G. Harv. 0.065 in 360. A and DM (31) 2685 1907. 197 A Decl. 110^09 .214 109.80 The A. G. positions give 11273(1871.3), and confirm the motion in declination. 7108. Ho 391- (8.o...ii.o) R. A. 14" 57 47' Decl. 6 24' A and C (12.0) 1910.375 2o8?73 4i''36 .395 299.83 41-24 1908.24 23.4 9.33 Common proper motion. Porter 07413 in 254?7 7088. 2 1896. R. A. 14' 54" 2- Decl. + 44 32' A and DM (44) 2407 (8.3. . .9.3) 1910.093 335?95 59759 107 336-08 59.62 .128 336.20 60. ir 1910.38 299.28 41.30 For the proper motion of AB. The prior measures are in Part II of the General Catalogue. Bossert o7227 in 246?7 Porter 0.268 in 259.3 Paris 0.224 in 247.7 given 1910.11 336.08 59.77 The change shown by the single measure of 1895 may not be real. 200 Burnham: Measures of Proper Motion Stars 7120. 44 Bootis. 2 1909. (5-2. -.6.1) 7154. Weisse28. R. A. 14" 59 51' Decl + 48 7' R.A. I5 h 6 m 3" Decl. 14-15' 1908.271 243?8 4721 This star is not double, h 3593 is about 30' distant /; little -370 244.8 4.19 brighter in the center. .383 -403 243-4 241.7 4.20 4-23 h 3593 and star 12.7 m 1908.36 243-4 4.21 1910.395 5^-6 144-21 .414 52-8 144-49 We have for the proper motion of the system : 1910.40 52.2 144.35 Auwers 07433 in 273o Porter 0.401 in 276.0 Newcomb 0.377 in 275.9 7181. O2 292 rej. (6. 5... 8.0) Boss 0.388 in 274.6 R. A. 15" 9 1 1' Decl. + 32 14' 1909.400 I55?82 125722 438 155-57 125.12 7125. H 1268. (8.7. . .12.2) 1909.42 155-70 125.17 R. A. 15" o m 42' Decl. + 6 15' Probably a little proper motion in one ; no early measures. 1825 153?! 13073 Weisse 1910.164 92?3 28731 1875 155-0 126.9 A. G. Leid. .206 92.5 28.47 1899.59 155.2 125.91 2n Hu .244 92.6 28.42 1910.20 92.5 28.40 No other measures. H 2762, which should be 22' n of this, 7186. 02294. (6.8... n. 3) not found. R. A. 15" 9 47' Decl. + 56 30' A and B 1910.164 249^5 3728 7136. 3 349- (7-5- - .11.8) .184 248.4 3.23 .186 245.8 2.91 R.A. 15" 2" 52' Decl . + 2 9' .225 248.8 3.24 1909.438 37?8 3 83 1910.19 248.1 3.16 09.458 36-6 3-31 No change in the small star. 10.164 36.1 3-41 A and Groombridge 2203 1909.69 36.8 3-52 1875 AR. A. 62! 2 A Decl. 7075 A. G. Hels. iQr\f\ f\~\ f\ *ro r {"Zt*Ao*tiirifli The nebula 55' nearly north is brighter in the center, but bisection not very exact. h 1903 and star 10.8 m 1909.458 io8?55 U4''9S 10.164 109.00 114.15 1009.81 108.77 "4-55 For comparison we have : 1893.42 I09?8 1 1274 Eng. There are two small nebulae about 2 l / 2 m and 3^ /> (J 349, and nearly the same declination. h 1901 and star 12 m 1910.244 277?o 140773 Dreyer 5839 and star 12.5 m 1910.244 91 8 92750 For the first we have : 1886.96 276?7 14075 in Eng. 1910.18 A is Groombridge 2209. The proper motions are practically zero: Groom. 2209 o7oo9 in 32O?6 Groom. 2203 o.oio in 39.4 The large diffused nebula, h 1909 is about 50' distant sp; bisection rather uncertain: h 1909 and star n.o m 1910.164 33i?5 88773 -184 333-9 88.83 1910.17 332.7 88.78 h 1909 and star 10.7 m 1910.164 227?6 88^83 .184 231.9 88.83 1910.17 229.7 88.83 The prior observations are: 1877.59 336?2 0275 m 1877.59 231.2 86.7 in Wn Wn. Burnhain: Measures of Proper Motion Stars 7187. O2 293. (7.5 . .11. 0) 7202. 02 (App.) 137. (6.7 ...8.5) R. A. 15" io m 10* Decl. + 22 59' R. A. 15" I2 m 1 1 ' Dccl. + 5 1 23' 1909.400 346?3 10784 1911.241 105^69 73"65 .438 348.3 10.80 .258 105.50 73-17 1909.42 347-3 10.82 .260 105.50 73.48 ^Jn tfiirsl ef *i * TH-I t- rt 1911.25 105.56 73-43 A. G. Ber. o"ii2 in 28o?5 7193. 2 1925. (7. 8... 9. 3) R. A. 1 5" io m 28' Decl. 7 50' A and B 1911.302 I2?6 5715 334 337 I2?6 14.1 13-2 4-99 5-26 1911.32 13-3 5-13 A and B have a common proper motion. Bossert 0*234 in 2o6?3 Valentiner 0.254 in 206.4 Porter 0.254 in 206.3 A and C (13. 2) 1911.302 27i?32 65^52 395 270.77 66.50 .411 269.48 66.34 1911.37 270.52 A and D (12.8) 66.12 1911-392 276?77 I25'.'62 395 276.23 124.75 .411 276.50 125.29 1911.40 276.50 125.22 A and E (12.0) I9II.392 271 ?32 2 17'f 10 395 271.40 217.32 .411 271.30 217.12 1911.40 271-34 217.18 No other measures of the small stars. 7201. 0227. (7-2... 9-5) R. A. 15' I2 m 7' Decl. 23 50' About 15' distant /> p 227 is h 3598; small with central con- densation. h 3598 and Cord. DM (23) 12193 (10.0) 1911.414 3o8?3 93? i 7 h 3597 and star 10.8 1911.414 262?8 iioTiS The latter is similar to the other, and about 31' p. The proper motion of (5 227 is given : Battermann 0^091 in 244?! The change seems to be wholly due to the proper motion of the large star. There is no third star convenient to measure. From the four positions the apparent proper motion of A is : 07088 in I45?s From the catalogues this is : A. G. Harv. 07079 in 165? 7 Battermann 0.055 in 158.9 7210. 2 1931- (6.2... 7. 6) R. A. 15" I2" 1 57' Decl. + 10 52' A and B 1908.249 i;o?7 13733 .252 170.1 13.11 .266 169.4 13-29 1908.26 170.1 13-24 No relative motion in AB. I do not find it in any proper motion list. In this interest I have connected a third star. A and C (11.4) 1908.249 93?os 162718 .266 92.65 162.06 1908.26 92.85 162.12 7212. 2 1934- (8.5-.- 8.5) R. A. 15" I3 m 10' Decl. + 44 14' A and B 1911.219 .241 27 ?o 26.6 7-05 7.14 1911-23 26.8 7.09 From six positions by 2, Ma, A, HI, Doo and 3 on 31 n (1830- 1911) one of these stars has a proper motion of: o"o34 in i68?3 ( 180) As these stars are of about the same brightness, the motion may be in either. To determine which is moving, I have con- nected a third small star. A and C (10.7-) 1911.219 2i7?75 140769 .221 217.87 140.55 .241 217.70 140.70 1911-23 217.77 140.65 202 Burnham: Measures of Proper Motion Stars 7213. S Serpentis. 2 1930. (S.O...IO.Q) R. A. 15" 13"' io' Decl. + 2 14' A and B 1907.463 379 io"93 A and C (12.0) 1907.351 4S?40 125^43 444 463 45 -55 45.87 125.28 125.14 1907.42 45.61 125.28 1911.241 .260 .299 44SS 44-37 44-80 125*38 124.92 124.98 1911.27 44.57 125.09 From the three positions of this star (1887-1911,) we have for the proper motion of 5 Serpentis: 0*590 in 140^7 A and D 1911.25 AR. A. 44^98 A Decl. 24*93 The prior observations of D will be found in the General Catalogue. From meridian positions the proper motion of 5 Serpentis is : Auwers 0*638 in 146^0 Bossert 0.649 m 146.3 Boss 0.645 in 147.1 7224. H 2776. ( io. i... 12. 5) R.A. I5"i5 m i6 < Decl. + 46 16' 1909.227 .266 .302 310.7 3H.3 I 9 "6 4 19.88 19.24 1909.26 3II-5 19-59 No other measures. The object in the field, referred to by Herschel, is h 1920; very diffused and bisection rather un- certain. H 2776 and h 1920 1909.302 I3?o 170*89 .304 12.4 170.31 1909.30 12.7 170.60 7237. 23093. (8.0... 9. 2) R. A. is" 16 27" Dec!. i 6' 1910.164 I42?s 28:'4S .356 142.6 28.08 .395 141.9 28.56 1910.31 142.3 28.36 The four positions by 2, A, Doo and f5 (1829-1910) give for the proper motion of A : 0*076 in ios?o 7244. H 2779. (7.0...II.O) R. A. 15" 17 28" Decl. + 55 45' 1911.260 337 353 3496 348.9 349-5 11.03 11.07 11.09 1911.32 349.3 ii. 06 Probably fixed. No proper motion found for the large star. 7251. TI Coronae. 2 1937. R. A. 15" i8 m 15' Decl. + 30 43' AB and C 1907.331 I440 54-72 7.348 14.00 54.76 8.039 13-58 55.38 8.156 14.00 54-94 1907.72 14.00 54-95 The measure I have given by Lament in 1836 is wholly wrong, and probably belongs to some other star. The relation at this time must have been about 29 : 45". The measures of 1856 and 1907 give for the proper motion of TI Coronae: 0*233 in I42?5 AB and D (ii.o) 1909.340 47?32 214*25 .342 47.35 214.24 .378 47-68 214.19 1909-35 47-45 214.23 For comparison we have : 1879.97 48?g6 212*82 3n Bl. Further measures should be made after a suitable interval to give the best correction to the proper motion of AB. From the two positions that motion is: 0*197 in 152^3 Some of the results from the star catalogues are: Auwers 0*219 m 150^7 Porter 0.217 in 148.5 Boss 0.237 in 146.6 Newcomb 0.235 in 147.8 7258. M. Bootis. 2 28, App. I. R. A. 15" I9 m 58' Decl. + 37 48' A and BC 1910.109 !7i35 107*96 .128 171.33 107.86 .145 171.50 108.17 .148 171.33 107.92 .164 171.20 107.97 1910.14 171.34 107.98 Very little change if any since 1834. The proper motion of the large star is : Auwers 0*189 in 2cX>?4 Bossert 0.158 in 296.2 Boss 0.169 in 297.5 203 Burnham: Measures of Proper Motion Stars 7268. Sh2oz. (7. 2... 7.5) R. A. 15" 21" 40' Decl. 8 55' B and SD (8) 3984 (10. 5) 1910.356 395 397 109:73 109.58 109.46 166.17 166.47 1910.38 109-59 166.44 For proper motion of AB. The proper motions by Porter are: A o?339 in I72?o B 0.355 in 158.4 As these stars have remained relatively fixed for half a century, the motions must be exactly the same. 7276. 02296. (7.0... 8.6) R. A. 15" 22 18' Decl. + 44 26' A and C (12.1) 1911.260 3is?73 67^23 337 315.97 67.33 356 3IS-73 67.41 1911.32 67.32 No other measures of C. The principal star, Lalande 28230, is given some proper motion : Bossert 0*178 in io6?3 Boss 0.105 in 125.4 DM (44) 2466 and 2468 ipii-337 4770 157*07 353 47-92 156.93 1911-34 47.81 157-00 These 9.3 m stars are about 10' s of O2 296. The meridian positions give: 1875 46?5 156*1 A. G. Bonn 7277. 2 1945. (8.8... 9. 5) R. A. 15" 22 26' Decl. + 15 7' A and B 1908.249 292?8 32*47 .288 .331 292.6 202.7 33-00 32-42 1908.29 292.7 32.63 From the measures of 2, A and (J (1830-1908) the proper motion of the larger star is: 0*140 in i82?3 To make it certain hereafter that B has no motion, I have connected two small stars. A and E (10.7) 1908.249 .288 54.15 146722 146.26 1908.27 54-iS 146.24 7289. Ho 393. (9. 2... 13.0) R. A. 15" 24 21' Decl. 18 27' A and B 1908.479 287?! 6?s6 10.395 280.2 7.01 B and C (9.5) 1908.249 281 ?4 .288 281.4 .331 282.9 8784 9-04 9 06 1908.29 281.9 8.98 1904.44 283.6 6.78 Perhaps change in AB, but the distances are very discordant. A and SD (18) 4083 (7.9) 1908.479 3i3?98 168^84 08.842 313.90 168.42 10-395 312.88 168.53 1909.12 313.59 168.60 The SD approximate places give 305 : 155". 7302. P 945- (6. 8... 12. 7) R.A. I5 h 26 m 6' Decl. + 57 51' 1908.425 444 .460 445 44-3 45-9 I5"8o 15-66 15.81 1908.44 44-9 15.76 The seven positions by 3, A and Doo (1879-1908) give for the corrected proper motion of the principal star : 0*302 in 3Oi?4 This is given from the star catalogues : Stumpe 0*304 in 297?4 Krueger 0.295 in 298.5 Porter 0.308 in 299.1 7314. '/Librae. (4. 5... 11.7) R. A. 15" 28 48' Decl. 14 23' 1912.487 -504 .507 152.84 152.80 153.40 41.90 41.72 41.08 1912.49 153.01 41.87 The measures of the small star indicate a smaller proper motion of y Librae than that of the star catalogues, but the first position depends on a single night, and therefore the result is uncertain, and the measures should be continued. From meridian observations we have: Auwers 0*057 in 7O?6 Newcomb 0.069 in 84.7 Boss 0.065 in 90.9 204 Burnham: Measures of Proper Motion Stars 7315. H 2886. (8.1... ii. s) R. A. 15" 28'" 52' Decl. + 38 52' 1911.356 i66?8 23*37 375 168.0 23.30 .392 23.37 The apparent motion from the measures of AB (1830-1910) is: 0*091 in 152^0 7327. H 2788. (8. 5... 8.5) 1911.37 167.4 23.35 No other measures. R. A. 15" 30 m 39 s Decl. + 45 18' 1912.236 30493 56*83 274 304-37 56.92 .296 304-38 56-95 7318. 8 Serpentis. 21954. (3.0... 4.0) R. A. 15" 29"" 5" Decl. + 10 56' A and C (13. 5) 1911.392 ii?30 65*61 .395 11.80 65.87 .411 11.50 65.89 1912.27 304.56 56.90 From a comparison of this with the only other measures (1903), it is evident that one of these stars has a small propel motion of about 0*10. This is confirmed by the meridiar positions : 1875 304?8 6o78 A. G. Bonn 1911.40 11.53 65.79 C and D (14.0) 1911.392 338?5 4"35 395 339-6 4.08 .4" 338.4 4-6i 7332. 02298. (7.0... 7. 3) R. A. 15* 31 46" Decl. + 40 ia' AB and C (7.0) 1911.40 338.8 4-35 For the proper motion of AB. No other measures. 1910.148 327?78 121*71 .164 327-83 121.67 .167 328.00 122. 02 Auwers o"o87 in 286?o Boss 0.068 in 276.7 7320. 02297. (7.5...H-5) R. A. 15" 29 40" Decl. + 25 24' 1911.142 I35?4 3*26 .200 134.5 3-26 .260 133.0 3.21 1910.16 327.87 121.80 C has the same large proper motion as AB. Porter 0*514 in 278?3 h 1930 is in the field; small, round, and not well defined foi measurement. AB and h 1930 1910. 128 234?8 195*5 .203 234-4 193-6 .244 233.8 195.5 1911.20 134.3 3.24 The minimum distance of these stars will be about i". From 8 positions by 2, O2, A, A, Hu, Doo and (5 on 24 n (1845-1911) the proper motion of A is : o"i57 in isi?6 7326. ^ 1961. (8. 7... 9.0) R. A. 15" 30 29' Decl. + 43 56' A and B 1910.128 38? 17 23752 .148 38.00 23.49 .164 38.20 23.44 1910.19 234.3 194.9 For the last we have : 1886.31 236=2 205*5 m Big 1889.49 236.2 201.2 in Big 1890.64 236.0 203.1 in Big. 7341. ^ 1963- (7-3--. 7-7) R. A. 15* 33 i' Decl. + 30 30' A and B 1908.252 204?2 4*70 .266 294.3 4.80 .288 294.1 4.67 1910.15 38.12 23.48 A and C (12.9) 1910.128 328?go 55*02 .148 328.20 55-04 .164 327-83 54-82 1908.27 294.2 4.72 No change. A and C (12.5) 1908.266 ii6?28 31*12 .288 iiS-75 30.89 1910.15 328.31 54-96 .370 II5-70 31-01 The very faint star is measured for the verification of the 1908.31 "5-91 3i-oi No other measures of the small star. 205 Burnham: Measures of Proper Motion Stars 7359. P 35- (7- 1--- 8- 2) R. A. 15" 36 i' Decl. 15 38* A and SD (15) 4167 (10.0) 1910.455 3578 112:17 471 35-63 112.27 -473 35-40 112.56 7362. rf Ursae Min. 21972. (6.1. ..7.0) R. A. 15" 36 13' Decl. + 80 51' B and C (n.o) 1911.356 103^67 I3i"49 373 103.80 131.22 375 103.37 131-35 1911.37 103.61 131.35 For the common proper motion of AB. C should be in Astrographic Catalogue. For the proper motion of the principal star we have: Stumpe 0:225 in 296?; Bossert 0.206 in 309.1 Boss 0.245 in 298.2 Groombridge 0.235 in 303.6 7364. 2 1971 rej. (S.g.-.n.S) R. A. 15" 37 13' Decl. + 75 43' 1907.348 324?4 17:38 8.041 323.8 17.26 8. 112 323.9 17.16 1910.47 35-6o 112.33 For proper motion of AB. Porter 0:185 in 25o?s 7360. i Serpentis. Hu 580. R. A. 15* 36 12' Decl. + 20 3' AB and C(i3-4) 1912.353 351 03 I4i?29 .411 351-10 141.36 430 350.80 142.50 1912.40 350.98 141.72 AB and D (12.6) 1912.389 mO5 148:89 .411 in.oo 149.86 .430 111.13 148.90 1907-83 324.0 17-27 This pair has not been previously measured. 7371. 23095. R. A. 15" 38 15' Decl. 14 48' These measures are of the pair in the field with 2 3095. ( General Catalogue.) A and B (10.0.. .10.6) 191 i . 302 2O4!o9 20^24 334 203.94 20.08 337 203.48 20.56 1912.41 in. 06 149.22 The proper motion of the close pair is given : Auwers 0:096 in 253?o Boss 0.090 in 232.6 7361. O2(App.)i4i. (7.0... 9.0) R. A. 15' 36 12" Decl. + 57 51' A and B 1911.356 20523 90:52 373 204.93 90.79 375 205.00 90.53 1911.32 203.84 20.29 A and 2 3095 (A) 191 1 . 30 A R. A. 43*3 A Decl. + 7''3 7372. a Serpentis. H 1277. (2. 7... 12.0) R. A. 15" 38 21' Decl. + 6 48' 1911.162 349?8s 58^59 .164 349.76 58.15 .184 349-28 58.33 .200 349-02 58.58 1911.37 205.05 90.61 The measures by A, Fr and P on 12 n (1876-1911) give for the proper motion of the large star : 0:044 in 242^8 From meridian positions: Groombridge 0:013 in I93?8 A and C (7.0) I9.375 334?8o 234:36 392 335-12 234.96 395 335-27 234.39 1911.18 34970 58.41 The four positions by Doo and P (1878-1911) tend to s that the proper motion from meridian observations is too la Measures 0:112 in 82?7 Auwers 0.130 in 64.5 Newcomb 0.139 in 72.4 Boss o. 139 in 74.2 I9H-39 335.06 234.57 C is Groombridge 2265. This is given a small proper motion : Groombridge 0:014 in I5?8 206 Burnham: Measures of Proper Motion Stars 7384. H 1278. (8. 5... 10. 7) R. A. is"40 m 29' Dec!. 15 48' 1909.3/8 .381 128.5 26:'6S 26.92 1909.38 128.4 Only a single measure prior to this. 26.80 7386. QSerpentis. 21970. (3.0... 9. 2) R. A. 15" 40 39* Decl. + 15 48' A and C (10.0) 1912.353 208? 66 I99':8o .389 .411 2o8?66 208.88 208.63 I99-SS 200.23 1912.38 208.72 199.86 The large stars have a common proper motion, measures. Auwers (Brad.) o"o6o in I25?5 Auwers (F. C.) 0.059 in 134.4 Boss 0.091 in 128.9 7394. 2 1976. (8. 2... 8.2) R. A. 15" 42"- 33' Decl. + 59 48' A and B 1909.266 7i?5 19^36 .299 71.5 19.19 .302 71.7 19.08 1909.29 71.6 19.21 No change since 1831. There is a 13 m star nearer No other To detect proper motion, if any, in a distant 10 m star : A and C 1909.266 214^05 .299 213.88 .302 213.75 1976, I have measured I33"6o 133.71 133-33 1909.29 213.89 I33-55 The large nebula, h 1934, is about 6 m directly p. 7404. p 415- (8.5... II. 5) R. A. 15" 44 50' Decl. + 65 57' A and B 1907.217 .258 351 3353 335-2 335-7 12.80 12.64 1907.28 335.4 Relatively fixed since 1876. 12.70 A and C (12.0) 1907.217 358?9 27^60 .258 359-1 27.94 351 358.7 28.03 1907.28 1910.280 .299 358.9 359o8 359-05 27.86 27.70 1910.29 359-06 27.65 Change in AC from proper motion of A. C and D (13.0) 1907.258 7 i 55''54 .351 6.0 54.85 1907.30 6.5 There is a 14 m star nearer C. 55-20 7411. H 574- (9-O...II.8) R.A. 15" 45 35 s Decl. + 32" 46' A and B 1908.249 93?o I5?95 .266 425 92.4 93-4 15-97 15-97 1908.31 92.9 15.96 A and C (10.0) 1908.240, 09?35 77?52 .266 99.05 77.44 .425 99.78 76.84 1908.31 No other measures. 99-39 77.27 7422. 2 1983. (8. 7... 10.8) R. A. 15" 47 27' Decl. + 35 49' 1908.291 370 .383 71.9 71.9 IS 75 15-75 16.18 1908.35 71.6 15.89 The four positions by 'S, A and P (1830-1908) give the proper motion of A : o"o27 in 117? i 7428. Z 1984. (6.2... 8.5) R. A. 15" 48 m i' Decl. + 53 16' A and C (12.5) 1910.280 9792 170^75 .299 98.12 171.00 .318 97.70 170.69 1910.30 97.91 170.81 For proper motion, if any, in AB. No other measures. A. G. Harv. o"ooo in 27o?o Groombridge 0.027 in 248.3 207 Burnham: Measures of Proper Motion Stars 7437. H 1281. (6. 8... it. 5) R.A.is'so m i7' Decl. 15 41' 34*09 34-99 35-01 34-93 1911.302 337 392 -395 231-7 230.4 232-4 1911.36 Change uncertain. 231.5 34-75 7442. \CoronaeBor. HVI-94. (5. 7... 9. 5) R. A. 15- 51" 25' Decl.+38i8' 1911.107 .142 .162 .164 64? 13 64.87 64-63 64.75 96754 96.18 96.95 96.67 1911.14 64-59 96.58 The three positions (1879-1911) give for the proper motion of the large star: Further measures are needed for a final value. Auwers 07091 in 23?4 Boss 0.084 in 31.2 7443. H 2798. (10.6... u. i) R. A. 15' 51- 35' Decl. + 17 48' A and B 1907.217 30? i 8^07 233 .258 30.1 30.4 7-94 7-44 1907.24 30.2 7.82 A and C (9.0) 1907.217 i7i?9 4876s .233 .258 172.1 172.4 49.29 49.14 1907.24 172.1 49.02 There is probably an error of 10" in Dembowski's distance of 58749, or perhaps one-half a revolution giving 47795 for the distance. C is DM (17) 2936. 7451. H 258. (9.s...io.o) R. A. 15' 52" 26' Decl. + 36 33' 1909.304 340 342 254-8 254-5 16754 16.75 16.72- 1909-33 254.8 16.67 The only other measure is by Dembowski on a single night in 1873. 7453. e Coronae. A. G. Clark 7. (4. 2... 12.0) R. A. 15" S 2 m 37' Decl. + 27 14' A and C (11.5) 1912.353 i7583 105752 .389 .411 175.55 175.17 104.25 105-74 1912.38 175-52 105.17 The proper motion of e Coronae from the star catalogues is: Auwers (F. C.) o7ii7 in 237?9 Boss Newcomb 0.109 in 231.5 o.no in 232.6 7460. 2 1996. (8. 7... 9.0) R. A. 15' 53" 26' Decl. + 57 38' A and B 1910.340 io8?35 19736 356 375 108.60 108.40 19.49 19-50 1910.36 108.45 19-45 No recent measures. Probably fixed. Wrongly identified in Part I of the General Catalogue; not in DM, but closely / the O. Arg. star. A and DM (57) 1621 (9.0) 1910.356 141^15 150729 375 I4LP3 149-94 1910.37 141.09 150.11 7466. 2 1993. (8.2... 8.2) R. A. 15" 54" 22' Decl. + 17 43' One of the components of 2 1993 has a proper motion of 0776 in about 38 ( 180) . I have therefore connected a distant star. A and 2 1994 rej. 1910.299 I79I2 242:'28 .318 179.00 242.57 337 178.70 242.42 1910.32 178.94 242.42 7473. Ho 400. (8.0... 13.0) R. A. 15" 54- 54' Decl. + 16 i' 1911.200 .219 133-0 io78o 10.97 132.3 10.88 1911.21 Change uncertain. h 1942 and h 1943 are distant about 45' tip Ho 400. h 1942 and star n m 1911.219 i6o?7 I79''o h 1943 and same star 1911.219 27?9 14277 208 Burnham: Measures of Proper Motion Stars 7477. 02303. (7. 4--. 7- 9) R. A. 15" S5 m i8 s Decl. + 13 37' AB and C (13.0) 1912.241 n?67 77719 .430 11.27 77.02 7508. A. G. 202. (9. i. ..9. 2) R.A. i6"2i" Decl. +47 59' 1910.280 283?s 22^21 .299 284.0 22.14 .356 283.7 21-94 46s 11-55 76.75 I9IO.3I 283.7 22.10 1912.43 11.50 76.99 No proper motion of the binary found in the catalogues re- ferred to. No other measures of C. 7480. p Coronae Bar. S 676. (5. 5... 9. 6) R. A. 15" 56 28" Decl. + 33 40' 1912.236 75?s8 84786 7514. x Herculis. 2 2010. (5.0. ..6.0) R. A. 16" 2 m 40' Decl. + 17 22' A and C (13.3) 1912.353 2I3?43 62725 .389 211.72 63.21 .411 211.67 62.74 2 74 75-93 84.71 .296 75.38 84.48 1912.38 212.27 62.73 1912.27 75.63 84.68 In the General Catalogue I have given the proper motion of p Coronae from the measures 1853 to 1903. This will not be sensibly changed by these measures. The several results are : Measures 07795 in I94?8 Auwers 0.815 in 196.0 Porter 0.810 in 196.1 Boss 0.810 in 195.3 7490. 22006. (7. 5... 9. 2) R. A. 15" 58 i' Decl. + 59 16' A and C (7-7) The small relative change in AB is probably due to a small difference in their proper motions, thus making a system of the 61 Cygni type. The movement of the principal star is given in the star catalogues : Auwers o7o88 in 262?8 Boss 0.047 in 252.5 7535. O2(App.)i43. (6. 3... 8. 2) R. A. 16" s m 15' Decl. + 70 35' 1907.291 84?7 46"54 329 84.5 46.85 351 83.9 46.63 1911.142 2i7?6s 44799 .162 218.10 45.23 .184 217.88 44.85 1907.32 84.4 46.67 No relative change. The proper motion of the larger star is : 1911.16 217.88 45.02 Change in both companions. No suitable fourth star for comparison. 7500. 22007. (6. 5... 8.0) R. A. 16" o 27' Decl. + 13 39' A and B Groombridge 07043 in 49^8 7550. ^ 2019 rej. (8.0. . .9.2) R. A. 16" 7 m 42" Decl. 10 7' 1910.260 152-95 22" 54 .356 152.38 22.06 -395 152.95 22.38 1908.288 325?4 34780 -331 324-9 35-09 425 325.5 34.65 1910.34 152.76 22.33 Probably unchanged. 1908.35 325-3 34.85 One of the 2 components has a small proper motion, and it is impossible to say which it is. I have, therefore, connected a third small star, which is DM (13) 3066. Remeasuring this after a proper interval will show what the fact is. A and C (9.8) 1908.288 I37?68 167788 331 137-40 167.61 .422 I37.70 167.62 7551. 49 Serpentis. 2 2021. (6. 7... 6. 9) R. A. 16" 7 m 42" Decl. + 13 51' A and C (10.1) 1909.381 I24.6o 240714 .400 124.52 240.43 .438 124.80 240.34 1908.35 137-59 167.70 1009.41 124.64 240.30 209 Burnham: Measures of Proper Motion Stars Comparing this with the three measures by O2 and H2, each on i n, we have for the proper motion of AB : 07477 in 159*2 A and D (10.0) 1911.411 51^98 123^84 .430 51.65 123.61 433 5I-7S 123.56 Auwers 0:448 in I59?4 Bossert 0.459 in 159-6 Porter 0.433 in 160.5 Boss 0.459 in 158.4 1911.42 51.79 123.67 C and E (11.5) I9II.4II 226?2 I3''24 .430 225.1 13.23 .433 224.7 13-39 7562. 2 2031 rej. (7. 6... 9. 7) R. A. 16" io m 9' Decl. i2i' 1910.356 230^38 20:44 395 230.22 20.74 .397 229.43 20.57 1911.42 225.3 13.29 Comparing the present positions with the prior measures by Doo and P, we have for the annual change in the large star : AC R. A. + o!'oi i Decl. 0:021 AD 0.016 0.026 1910.38 230.01 20.58 The measures do not appear to show any proper motion in A. A. G. Nico. o"ios in 270^0 7563. a Coronae Bar. 22032. (5.0... 6.1) R. A. 16" io m 1 1' Decl. + 34 10' A and D (10.5) 1908.288 86?o8 63:16 .331 85.80 63.34 370 85.78 63.40 .383 85.73 63.28 Therefore the proper motion of v Coronae is : 0:027 in 150?! The early measures by Sh have large errors in distance, anc cannot be used in this connection. From the star catalogues we have : Auwers 0:026 in 171^4 Boss 0.028 in 158.1 7583. 2 3103 r?' 1911.42 304.7 24.55 7593. SD(3)392g. (7. 6... 8.7) R. A. 16" 16 14' Decl. 3 58' AandB 1910.225 22?39 101:65 .244 22.15 101.77 .260 22.50 101.29 .263 22.40 101.55 A and B 1911.411 28?26 54:77 .430 28.05 54.58 .433 28.48 54-25 1910.25 22.36 101.56 I9II.4II 22?8O I0i;'96 .414 22.37 102.17 .430 22.30 101.79 1911.42 28.26 54-53 .433 22.42 101.91 A and C (10.8) 1911.411 22?4i 86:54 .430 22.46 86.27 .433 21.92 86.63 1911.42 22.47 101.96 1912.236 22? 18 102:02 .255 22.40 102.02 .274 22.30 102.17 1911.42 22.26 86.48 1912.25 22.29 102.07 210 Burnham: Measures of Proper Motion Stars There seems to be a proper motion in one of these stars of about o"i7. The relative change is confirmed by the meridian positions in the A. G. Stras. and Warsaw Catalogues. To show whether or not the smaller component has any motion, I have connected a star n.8m: A and C 1910.260 340? 10 68*46 .263 340-30 68.00 .299 340.18 68.20 7612. 23Herculis. (6. 4... 9.0) R. A. 16" 18 20' Decl. + 32 37' 1911.411 i8?6o 34"o8 .430 18.08 34.13 .433 18.25 33.96 1911.42 18.31 34.06 The four positions by OS, A and fl (1840-1911) give for the apparent motion of A: 0*026 in 22? i OS calls the companion 8.5m; and A g.om. It is possible, though not probable, that this has some motion of its own. The catalogues give for A: Auwers o"o2O in I46?2 Boss 0.022 in 144.9 Newcomb 0.036 in 141.2 7624. CD Herculis. P 625. (5.0... 12.0) R. A. 16" 19 53' Decl. + 14 19' A and C (11.5) 1907.444 ioi?2 31*73 .463 101.7 32-H .482 102.0 31.70 1910.27 340.19 68.22 1911.414 340? 10 68*52 .430 340.25 68.53 433 340.45 68.54 1911.43 340.27 68.53 B and C 1910.260 243 ?86 68;'8s .263 244.28 68.77 .299 244.45 69.35 1910.27 244.20 68.99 1911.414 244?57 69"i9 .430 243.83 69.65 .433 244.22 68.83 1911.43 244.21 69.22 7596. Y Herculis. Sh 227. (3. 5... 9. 5) R. A. 16" 16 38' Decl. + 19 26' B and C (12.2) 1910.225 207?6o 84*59 .260 297.33 84.94 .263 298.00 84.59 1907.46 101.6 31-85 The six positions of the distant companion (1879-1907) give for the proper motion of A : o"o84 in I32?6 From meridian observations : Auwers o"o6s in 159?! Boss 0.078 in 146.1 A later set of measures will not sensibly change the result given above: 1912.353 IOI-0 3l"4I .389 100.8 31.53 .408 101.5 3I-48 1910.25 297.64 84.71 It is very probable that B has no sensible proper motion ; and that the value of the movement of A derived from the measures (1844-1903) is more nearly correct than that from meridian observations. For greater certainty I have connected a faint star with B. Measures o"o66 in 340^3 Auwers 0.083 in 308.6 Rechenberg 0.080 in 305.3 Newcomb 0.060 in 307.5 Boss 0.062 in 309.0 7597. Ho 402. (8. 5... 12.0") R. A. 16" i6 m 47' Decl. 12 52' 1910.452 23o?7 9747 .458 229.3 9-31 1912.38 101.1 31-47 7633. 22048. (6. 3... 9.0) R. A. 16" 22"" 20' Decl. 7 52' A and C (11.7) 1910.263 299?30 131*78 .397 298.80 132.21 .414 299.37 132.07 1910.36 299.16 132.02 For the proper motion of AB. Bossert o'.'ii4 in 195?! Porter 0.079 in 228.8 1910.45 230.0 9.39 Wrongly identified in Ho; the SD number is 4499 instead of 4497. 211 Burnham: Measures of Proper Motion Stars 7640. P 815. (8. i... 10. 4) R. A. 16" 23 m 16' Decl. + 43 1 1' 1910.167 .184 .186 203 A and B 338?8 338.7 338.5 337-8 10*67 10.50 10.37 10.39 1910.18 338.4 A and C(n.5) 1910.184 i6o?72 .203 160.15 .225 160.75 .244 160.32 10.48 67*91 68.05 67.49 66.90 1910.21 1910. 184 .203 .225 .244 160.48 BandC l6o?37 160.08 159.97 160.52 67.59 79*OO 78.67 78.07 77.84 1910.21 160.24 78.39 The measures of C show that the proper motion is in B. From the measures to 1905, this motion is : 0*143 m 323i A and DM (43) 2608 1825 A R. A. +40! 6 A Decl. + 21*8 Weisse 1875 40.0 24.0 A. G. Bonn 1910.2 40.0 23.1 p 7642. 22052. (7.5... 7-S) R. A. 16" 23" 37- Decl. + 18 40' A and C(ii.6) 1911.468 .471 .487 26?7O 27.00 26.83 147-71 I47-IS 1911.48 26.84 I47.49 This pair seems to belong to the 61 Cygni class. Third star for an independent value of the proper motion of AB. A. G. Ber. 0*534 in 320?o Porter 0.528 in 319.7 7645. 23104- (8.5...IO.O) R. A. 16* 23" 45" Decl. 14 17' A and C (9.1) 1912.487 ?8?73 108*58 .504 78.93 .526 78.75 109.02 108.81 1912.50 78.80 108.80 From a comparison of this with the prior measures, it is evident that one of these stars has a proper motion of 0*081 in 3o6?2 ( 180). 7649. \Ophiuchi. 22055. (4.0... 6. i) R. A. 16" 24 52' Decl. + 2 15' AB and C (ii.o) 1912.411 i6p?8o .427 169.93 .430 170.00 119.04 118.50 1912.42 169.91 118.75 Although half a dozen orbits have been worked out, the apparent ellipse, and therefore the real orbit, is as uncertain now as it was half a century ago, and it is likely to remain indeterminate for a still longer time. The proper motion of the binary system is given : Auwers o'.'ooy in 2I5?8 Boss (P. G. C.) 0.097 in 209.7 7668. 31 Herculis. P 816. R. A. 16" 27 o' Decl. + 33 46' The 9.5m star, DM (33) 2741, should be in the field with 31 Herculis, and 3?7 /> and i.'7 s. There is no star in or near this place now. The small star may be variable, but the ex- planation is more likely to be found in an error in the DM. The proper motion of 31 Herculis is : Auwers 0*042 in 26o?3 Boss 0.039 in 235.9 7675. 22065. (8.0... 8.7) R. A. 16' 28 36' Decl. + 40 14' 1909.112 .164 .186 A and B 2i7?o 216.7 216.6 30.98 31.13 216.8 30.97 1909-15 The measures of 2, A and P give an apparent motion for A of 0*015 in 332?2, but this change may be in either component. I have therefore connected a third star to settle the question of motion hereafter. A and C (12.8) 1909.164 25?40 79*74 .186 25.95 79-65 1009.17 25.67 79.69 7682. Young. (8.0... 9.5) R. A. 16" 29 26' Decl. + 58 i' AB and Dreyer 6187 1910.280 :8o?i8 208*8 337 180.47 206.2 -395 l79-8o 206.2 1910.34 180.15 207.1 Nebula small, but ill-defined. Its place (1860) is therefore: R. A. 16" 29 i' Decl. + 58 o' 16" 212 Burnham: Measures of Proper Motion Stars 7699. p 820. (8.0... 9.5) R. A. 16" 33 m 8 s Decl. 2 52' A and C (12.9) 1911.219 257^42 162^70 .260 2S7-43 162.38 1911.24 257.42 162.54 For the proper motion of AB. Radcliffe o'/ii2 in 2Oo!9 7702. riDraconis. 2 30, App. I. (5-O...5-O) R.A. 16" 33 2i s Decl. + 53 8' A and C (n.o) 1910.128 .148 .164 122.20 122.65 122.40 118.91 119.02 Bl Bl. 1910.15 122.42 118.81 The early measures are discordant in distance : 1879.56 122 16 ii6"4i in 1880.21 122.32 117-39 In The proper motions of the large stars are given : A Auwers 0^029 in 33&6 Boss 0.025 in 324.2 B Auwers 0.038 in 303.7 Boss 0.022 in 335.8 Whatever this motion is, it is exactly the same for each star. 7708. 2 2080. (8.0... ii. 8) R. A. 16" 34 m 26' Decl. + 38 34' A and B igio.337 24?6 2^72 24.6 2.95 1910.36 24.6 2.83 The principal star has a small proper motion. A and C (10.8) 1910.337 2i974 .356 375 219.62 220.13 109.79 109.20 1875 1910.2 1910.36 219.83 109.48 A and DM (38) 2811 (8.1) AR.A.33?6 A Decl. 6IT3 A. G. Lund 33-4 63.6 P 7714. 42 Herculis. 22082. (4.0... 10.7) R. A. 16* 35 m 29' Decl. + 49 i' 1912.236 .274 .296 1912.27 91.7 92-4 91.9 24.20 24.12 24-39 24.24 The distance is slowly increasing. If the large star has the jroper motion indicated by the meridian positions, this is a ystem of the 61 Cygni class. There is no third star available "or measurement. Auwers o"o23 in 335?o Battermann 0.047 > n 3i-9 Boss 0.044 >n 307-4 7726. 0953- (8.0... 8.6) R. A. 16" 37 2i Decl. + 70 2' AB and C (10.0) 1911.280 I5i?8 72^21 .302 152.4 72.21 1911.29 152.1 72.21 AB and O. Arg. N. 16458 1911.241 46?8o i46"53 .260 .280 46.90 46-85 146.86 146.24 1911.26 46.85 146.54 For the distant star there are meridian positions : 1842 47?6 I45"9 O. Arg. N. 1900 47.4 146.8 Greenwich 1905 47.0 147.3 A. G. Berlin. 7730. 22087. (8. 2... 8. 2) R.A.i6"37 ra 33' Decl. + 23 54' A and C (11.5) 354? 18 121^32 353.65 121.16 353-77 121-65 1911.299 .302 334 1911-31 353-87 121.38 h 1970 is about i m 50' /; measures of this are given here as No. 7745- The proper motions of the ^ components are given in A. G. Berlin : A o"o79 in 3OO?3 B o.ioo in 287.3 As these stars are relatively fixed, the motions must be the same. 7733. R. A. 16" 38 m 8' 2086. Decl. o 20' The wide pair measured by Glasenapp (see General Cata- logue) is 25?o /> and 93"2 H of 2 2086. A and B (9-3- --9-5) I9II.I84 300? 58 I02!'22 .200 300.68 101.94 .219 300.35 102.14 1911.20 300.54 102.10 213 Burnham: Measures of Proper Motion Stars A and a (II.O) B and a (12.5) 191 1 .184 141 ?2 2 "29 1907 197 348?3 62790 .200 146 .1 2 49 .217 346.6 62.83 1911 .19 143 .6 2 -39 .258 347-8 63-50 The near companion not previously seen. 1907.22 347-6 63.08 C and a 1907. 197 io8?6 io6"37 7735. 02(App.) 149- (6.7-- 7-3) . 217 258 107.6 108.5 106. 105 45 76 R. A. I6" 38 19' Decl. + 20 57' 1907. 22 108.2 106. 19 1911 280 I3523 98773 1911. 241 io8?30 105794 299 135 -25 98 .88 . 260 107.83 105. 61 302 135-04 99 38 302 107.92 105. 74 1911 29 135 17 99.00 1911. 27 108.02 105. 76 Relatively fixed. The measures of Care continued for a more accurate proper motion of 41 Herculis. The positions of the faint star show that C has no motion. 7738. ti Herculis. Auwers 07336 in 233 4 R. A. 1 6 3 47 Decl + 39 9' Porter Boss 0.341 in 0.352 in 224.8 218.2 1911. 241 262?60 113770 . 258 262.28 "3 90 . 260 262.40 113 61 . 280 262.30 "3 83 7745. A. G. 205. 1911. 26 262. 39 "3 76 R.A i6" 3 9 m 28' Decl. + 24 i' The later measures compared with my single night in 1879 give for the proper motion of TI Herculis: Measures o7ooo in i$7?o Auwers 0.079 in 161.2 Boss o.ioi in 160.4 Newcomb o.ioo in 159.3 7740. 41 Herculis. (6. 2... 9.0) R. A. 16" 39 9' Decl. + 6 19' A and B 1907.217 I9i?2 162^53 .258 .291 191.2 191.4 163-15 162.83 1907.26 191.3 162.84 1907.217 .258 .291 A and C (9.5) 246? 4 246.3 246.5 159706 159-50 159-20 1907.26 246.4 159-25 1911.241 .260 .280 .302 246^28 246.47 246.18 246.18 158709 158.20 157-77 157.83 1911.27 246.28 157-97 From all the measures of AC by COS and (1854-1911) the proper motion of 41 Herculis is: This is the planetary nebula h 1970 (Dreycr 6210). In the course of my measures of all the well-known planetary nebulae in 1891 at the Lick Observatory, this was examined with others as stated in the introductory remarks (Publ. L. O. II, p. 159) ; but for some reason, which I am unable to explain at this time, the central star, which is characteristic of all nebulae of this class, was not seen. At the present time it could not be over- looked with any moderate aperture. It is nearly twelfth magni- tude, and appears with favorable atmospheric conditions as a sharp, brilliant point. Doubtless this has been seen by others. If it is not variable, I cannot account for my failure to see and measure it with the 36-inch at Mt. Hamilton. It is now connected by measures with the nearest compari- son star. h 1970 and star (12.3. . .11.3) 1908.156 271 73 123719 .249 271.85 123.64 .266 271.92 123-77 9.167 272.17 124.64 .227 271.65 123.84 -304 272.20 124.17 1908.72 271.92 123.87 7747. 43 Herculis. Sh 239. (S-S-.- R. A. 16" 40"- 4' Decl. + 8 48' A and B I9".353 230^23 82743 .356 373 229.70 229.80 82.44 82.24 1911.36 229.91 82.37 214 Burnham: Measures of Proper Motion Stars From meridian observations the amount and direction of the proper motion of 43 Herculis is somewhat uncertain : Auwers o'.'oso in 335^7 Boss 0.016 in 354.7 The four positions by OS, A and fJ (1852-1911) give: o"ois in 340^8 It is safe to assume that the pm star has no motion which would affect this result, but I have connected with it a very small star : B and C (12.0) I9II-356 I33i3 98''57 375 I33-23 98.47 -392 133.70 98-65 1911.37 133-35 98.56 7752. 2 2100 rej. (8. 5. ..10.7) R.A. i6' 4 o m 38 s Decl. + 50 53' 1907-331 8.156 8.192 295 ?o 298.2 29S-3 23^36 23.63 23.60 1907.89 296.2 23-53 The only other measures are given in the General Cata- logue. 7756. Espin 76. (9.7... 9. 9) R. A. 16" 40- 58" Decl. + 50 50' 1907-351 8.425 8.444 44.0 44.0 46.6 2.77 1.97 2.40 1908.07 44-9 2.38 7757. 22098. (8.0... 9.0) R.A. i6"4i m 2 Decl. + 30 14' A and C (9.5) 1909.400 I36?i8 64^74 10.148 135.12 64.08 10.167 134-40 64.69 1909.90 135-23 64.50 A and D (8.0) 1909.400 i6?os 6i?57 10.148 15.32 61.66 10.167 15.30 61.62 1909.90 15.56 61.62 The position of AC by 2 is evidently only a rough setting. The meridian observations give : 1875 I36?7 64^76 A. G. Leid. The other distant star has a very faint attendant : D and d (14.0) 1910.184 272?s S :'6s .203 269.9 5-Sr 1910.19 271.2 5.58 7758. 19 Ophiudii. 22096. (6.0... 9. 3) R. A. i6"4i m 7' Decl. + 2 if A and B I9II-373 90^40 22"76 392 395 90-37 90.26 22.72 22.72 1911.39 90.34 22.73 These stars appear to have a small common proper motion. Auwers o''o46 in 251^5 Boss 0.037 in 238.9 I have therefore measured a third star. 1911.356 373 392 A and C (11.3) I94?2O I94.I5 194-47 213.46 213.71 1911.37 194.27 213-45 7768. 22103. (s.2...io.o) R. A. 16" 44 m 2' Decl. + 13 28' A and B 1911.468 41 !o 5726 471 .487 40.3 42.6 5-23 5-28 1911.48 4i-3 5.26 Measures by 2, A, Sp and (3 on 14 n (1830-1911) give for the apparent proper motion of A : Measures o!'oo8 in 35O2 Boss 0.037 '1 221.4 It is not likely that B has any motion which would change this result, but for greater certainty I have connected two very faint stars : A and C (13.6) 1911.468 246?! I7"o8 .471 244.8 17.98 .487 244.7 18.23 1911.48 245.2 18.06 A and D (12.8) 1911.468 I40?9 40*27 .471 141.8 40.53 .487 141.8 40.72 1911.48 40.51 7770. A. G. 206. (9. 3... 9. 7) R.A. i6"44 m 35' Decl. + 67 o' 1907.331 351 I555 I55-I 5"66 5.69 1907.34 155.3 5-67 By an error of the printer, the position-angle by Doolittle of I54?7 is printed i64?7 in the General Catalogue. 215 Burnham: Measures of Proper Motion Stars 7775. Schj 13. (8.0. ..12.6) A and C (8.0) R. A. 16" 45-8' Decl. + 4 59' 1907 33i 35i 317? 317. 80 42 II77I2 117.65 A and B 463 317. 90 117.26 1911-392 56 27 122746 1907 38 3I7. 71 "7-34 395 .411 55 56. 93 oo 122.13 121.65 From six sets of measures of AB (1846-1907) the apparent 1911.40 56. 07 122.08 o7o83 in i6a?s No other measures of the distant star. The other has some motion : Bossert 0^143 in iss?3 Porter o.uo in 155.9 7779. 52 Herculis. fJ 627. (5.0... 10.5) R. A. 16" 45 43' Decl. + 46 12' A and D (12.0) 1911.142 230^20 66702 .164 230.17 66.35 .184 230.63 66. 10 1911.16 230.33 66.16 A and E (12.0) 1911.142 268?70 .164 .184 268.57 268.65 145729 145-91 145.81 1911.16 268.64 145.67 The measures of the two small stars give for the proper motion of 52 Herculis: 07094 in I44?4 Some of the values from meridian positions are : Auwers o"073 in 210^7 Boss 0.076 in 163.4 Groombridge 0.059 m 147-3 Aitkin finds the 10.5 m companion to 52 Herculis a close 7780. 2 2108 rej. (8. 4... 10.3) R. A. 16*46" 4- Decl. + 55 21' 7-351 8.102 3S2.I 351.9 26776 26.67 26.59 1907.62 No early measures. 352-0 26.67 7800. O2.H7. (7.2...H.8) R. A. 16* 49 19* Decl. + 44 36' A and B 1907-331 2I9?8 i87i3 351 .463 219.1 220.1 18.20 18.25 From six sets of measures of AC (1874-1907) the apparent motion of C is : o7n9 in 2o8?8 At least two of these stars have a considerable proper motion. 7830. 2 32, App. I. (7.0. ..7.1) R. A. 16" 54 m 34* Decl. + 47 32' 1909.112 .148 .151 262.57 262.80 i 13-39 "3-59 "3-57 1909.14 262.68 H3-52 From the measures by 2, A and p, one of these large stars should have a proper motion of 07024 in I35?o ( 180) I do not find any motion given in the star catalogues. A and a (11.2) 1909.112 5i6 2794 .167 51.8 2.92 1909-14 51-7 2.93 The small companion to A was detected by Aitken. 7845. 34 Ofhiuchi. 2 33, App. I. (5. 8... 6. 3) R. A. 16' 58" T Decl. + 13 47' B and a (10.0) 1909.148 267?so 151752 _.ifc_ 1909.16 267.63 267.77 I5L75 I5L59 267.63 o and b (10.5) 1909.167 209 57 .227 209.28 .304 209.27 151.62 98.38 98.50 1909.23 209.37 98.51 The only other measures are: 151744 2n 152.11 an From the three positions the proper motion of 34 Ophiuchi is : 07124 in I78?7 0.134 >n 199.4 1887.52 1894.69 266?55 267.03 Eng Eng. Measures Porter Boss Auwers in in o. 136 in 0.134 in 173-8 185.6 1907 38 219.7 18.19 The measures of the small stars should be continued. 216 Burnham: Measures of Proper Motion Stars The 1903) 7855. 60 Herculis. H V. 133. (S.O...II.D) R. A. 16" 59 m 49* Decl. + 12 54' 1911.162 309?30 55^05 .184 309.20 54.88 .200 309-02 55.10 .219 309.22 55.15 7864. H 2804. (9- 8... 10. i) R. A. 17" o m 3 1 ' Decl. + 39 9' 1907-331 276?4 I4l'74 8.370 277.1 14.41 8.422 277.1 14.57 1908.04 276.9 14.57 There seems to be no doubt of change in angle and distance. The components are not given in DM. 7872. 2 2I2& (8.0... 9. 2) R. A. 17" i m 43 s Decl. + 59 44' I907-33I 50?o uTpi 7-351 49-9 11-84 8.370 51.2 11.91 1911.19 309-18 55-04 proper motion of 60 Herculis from the measures (1852- is: Measures o"o6i in 105^4 Auwers 0.032 in 93.6 Boss 0.055 in 107.9 7858. Herculis 210. 22120. (6. 4... 9. 2) R. A. 17" o ra o" Decl. + 28 15' A and B 1907.331 24i?4 8"68 .348 242.4 8.79 .351 241.4 8.70 1907.68 50.4 11.89 Very little relative motion. Appears to be a pair of the 61 Cygni class. The proper motion of the larger star is given : Porter 0^466 in 301 ?6 Kustner 0.442 in 302.1 A third star should be connected. 7873. 02323. (7. 4... 10.5) R. A. 17" i m 44* Decl. + 47 8' 1911.375 93 ?2 8'/53 -392 93-1 8.36 -430 93-5 8.53 1907.34 241.7 8.72 A and C (9.6) 1907-331 174 15 145*04 .348 I74-32 145-69 .351 174.22 145-66 1907.34 174-23 I45-46 A and A. G. Camb. 8000 1907.331 A Decl. = 15740 The distant star is measured for determining hereafter how much, if any, of the proper motion is in the small star B. The measures give for the proper motion of A : 7863. P 823. (8. 2... 9. 2) R. A. 17" o m 29 s Decl. + 49' In Part I of the General Catalogue the declination of this star is erroneously printed o 49'. AB and DM (o) 3634 (9.5) 1912.545 8s?6o I7i"59 .562 85.65 171.55 564 85.45 171-69 1911.40 93-3 8.47 The change is due to the motion of A. From measures by O2, A, Doo, Hu and P on 19 n (1848-1911) the proper motion of the large star is : oTo46 in 223! 7 7875. A. G. 208. (9.0... 9. 2) R. A. 17" 2 m 8' Decl. + 1 53' 1912.465 244?o 26^00 .504 243.6 26.14 .507 244.4 25.04 1912.49 244.0 26.03 One of these stars has a small proper motion of at least o"2. Should be connected with a third star. 7876. ^ 2127 rej. (8. 2... 10. 5) R. A. 17" 2 m 30' Decl. + 31 15' 1907.217 275?! i6"2i -233 277.1 16.11 331 274.9 16.52 The 1912.56 85.57 171.61 only other position from the star catalogues is : 1859 84?7 172^5 Hd Zones 1907.26 275.7 16.28 The only other measures disagree in angle and distance. 217 Burnham: Measures of Proper Motion Stars 7882. H 264. (9... ii) R.A. I7'3 m 26' Decl. + 366' 1907.233 2oi3 H"i4 .331 201.6 13.80 .348 201.5 13.78 7894. Espin 77. (6. 5... 1 1. 2) R. A. 17" 5 20' Decl. + 51 o' 1911.356 272?s I7fo6 373 273.5 16.85 375 273.2 17.08 1907.30 201.5 13.91 A and 5^2 tn star (= Ho 412) 1907.331 99-9 245776 The small star in the field sf, DM (36) 2828, has a small companion; magnitudes 9.5 and 13.5; not given in the General Catalogue: 1907.217 184?! 6"09 331 185.5 6.97 .348 184.8 6.67 1911.37 273.1 17.00 Proper motion? A. G. Camb. o"oi2 in 360^0 Battermann 0.024 in 311.8 7898. 2 2135. (7. i... 8. 4) R A 17" 6"' 58* Decl +21 22' 1907.30 184.8 6.58 DM (36) 2828 and 2830 1907-233 54-8 I43"33 331 54-7 143-01 A and B 1911.449 I78?6 7739 .468 179.6 7.28 171 178. [ 7.27 1907.28 54-7 143.17 7885. \\Ofhiuchi. p 1118. (3.4.-. 3-9) R. A. 17" 3 m 30" Decl. 15 34' AB and C (13.0) 1911.414 I43?23 94775 .449 142-70 94-75 1911.46 178.8 7.31 One of these stars has a small proper motion. I have tl fore connected a third star. A and C (n.8) 1911.449 2o8?os I59"oo .468 207.77 159-12 .471 208.20 158.63 .468 143.17 94-i6 1911.46 208.01 158.92 1911.44 143.03 94.55 AB and D (11.5) 1911.414 287?68 99?68 .449 288.03 99-76 .468 287.55 99.85 7903. 22138. (8.0... 8.3) R. A. 17" 7 m 40' Decl. + 54 39' 1911.44 287.75 99-76 Comparing these positions with the measures of 1898, we have an independent value of the proper motion of the large star, but the time interval is too short for a final correction : 1909.167 I36?4 22?25 170 135-8 22.23 .186 136.0 22.39 .266 136.9 22.31 AC R. A. + o?oo6 Decl. + o7io2 AD 0.034 0.119 Hence the motion of t\ Ophiuchi is : o?ii2 in io?3 Other values from meridian positions are : Auwers 07097 in 2?6 Boss 0.093 in 22.8 Newcomb (Stand.) 0.080 in 12.4 Newcomb (F. C.) 0.095 in 15.3 7893. 22131. (7. 5-.. 8- 5) R. A. 17* 5" 6' Decl. + 30 30' 1909.20 136.3 22.29 No relative motion since 1830. 7914. a Here ulis. 22140. (3.0... 6.1) R. A. 17* 9 10" Decl. + 14 32' A and D (10.6) 1912.427 3933 83779 .465 38.81 83.70 .485 38.77 83.77 .487 39-02 83.49 1008.288 I79i 24^38 331 178.5 24.30 .370 178.9 24.29 1912.47 38.98 83.69 For the proper motion of o Herculis we have: Auwers 0*049 in 326?! 1908.33 178-8 24.32 Wr rTiana** in ancrlp nr ftislanrp sinr.p 1830. Newcomb 0.032 in 337.8 Boss 0.020 in 336.7 218 Burnham: Measures of Proper Motion Stars rom the three measures of AD (1890-1912) on ion, the ion of the large star is : o'/056 in 39?2 is very improbable that D has any sensible motion. This be confirmed later by measures of AC. 7925. 2 2146. (8.0...IO.O) R. A. 17" io m 27" Decl. + 54 16' A and DM (54) 1869 (8.9) 1909.151 5i?i3 89"oo .167 51-24 88.73 .170 50.97 88.78 7948. S 686. (7.9. ..8.1) R. A. 17" 13 17' Decl. + 28 52' 1911.430 4?20 52*87 433 4.25 52.6i 449 4-40 52.73 1911.44 4-28 52.74 One of these stars has a small proper motion. The four positions by S, Cin and (1825-1911) give for the apparent motion of A : o"O26 in io?9 A third star should be connected with one of the components. 7962. S 2155. (6. 2... 9. 5) R. A. 17* I 4 m 37' Decl. + 60 50' I9H.375 "4-1 9"9i .392 113.2 9.91 -395 H3.3 9-86 1909.16 51.11 88.84 bird star measured for proper motion of AB if any. For further observations with the micrometer are necessary. A. G. Harv. o:'i35 in 333^8 rom meridian positions we have: 1842 5i?2 9i':8 O. Arg. N. i87S 50.3 90.0 A. G. Harv. 7926. U Ophiuchi. H 854. R. A. 17" io m 27' Decl. + l 21' 1912.427 357?7 20^29 430 357-0 20.64 465 357-S 20.78 1911.39 113.5 9-89 The proper motion of A from meridian observations is un- certain : Kustner 0*031 in 315?! Greenwich 0.035 in 4-8 The measures of the 9.5 m star imply a much smaller motion of about 0*006 in 260. 7968. 22150. (9. 3... 10. 2) R. A. 17" 15"' io- Decl. + 1 41' A and B 1912.427 200?7 9*10 .430 200.3 9-21 .465 200.7 9-31 1912.44 357.4 20.57 ariable 6.0 to 6.7 m in about 20". The change, if any in the tion of the faint star, is small. 7940. O2326. (7. 2... 11. 5) R. A. 17" 12 34' Decl. + 9 39' I9II.4I4 2I3?2 l6?02 .430 212.7 16.09 .433 212.8 16.16 1912.44 200. 6 9.21 One of these stars, presumably the larger, has a small proper motion. A and DM (i) 3422 1912.427 57?3 4 163*58 430 57.60 163.41 465 57.41 163.89 1911.43 212.9 16.09 omparing this position with those of O2 and Hu, we have the proper motion of A : 0*046 in IO2?2 7942. 22147. (7-1... ii. o) R. A. 17" i2 m 53' Decl. + 29 2' 1908.288 93?! 6"22 331 91.8 6.16 370 93.7 6.25 1912.44 57.45 163.63 The only other measure of this is given in Part II of the General Catalogue. 7972. 70 Herculis. 8687. (5. 5... 9.0) R. A. 17" 15 58' Decl. + 24 37' A and B 1911.430 s6?i8 220*98 433 56.15 220.58 .449 56.35 220.68 1908.33 92.9 6.21 nchanged. 1911.44 56.23 220.75 219 Burnham: Measures of Proper Motion Stars B is DM (24) 3168. The proper motion of 70 Herculis is small, and somewhat uncertain : Auwers 0*037 in 282?3 Boss 0.018 in 266.8 As B appears to share the motion of A, whatever it is, I have connected with it a faint star. 8017. 22165. (7.0... 8.5) R. A. 17" 21" 35' Decl. + 29 34' A and C (10.2) 1909-340 25i?55 06^66 .342 251.62 96.54 .3/8 251.82 96.96 and C (12.2) ipii-433 314-95 146*49 .449 3I4-90 146.97 1909-35 251.66 96.72 C and c (n.i) 1911.44 314-92 146.73 1909.342 I79?s8 48*72 -378 179-10 48.78 7976. 72 Herculis. (5.5...) R. A. 17' 16 10' Decl. + 32 3^ B and C (12.5) 1911.184 2i4?3 8*79 .200 215.1 8.99 .219 217.9 8.52 1909.36 179-34 48.75 The only other measures of C, which are given in the G Catalogue, indicate some proper motion in AB. 8032. 22169. (8.o...io.o) 1911.20 215.8 8.77 A and B (9.6) 1911.162 33395 217*78 R. A. I7 h 23 28" Decl. 8 19' 1908.252 97?6 14*79 -556 97-8 15.06 559 98.9 14-93 .164 334 -JO 217.53 184 333-75 217.59 1908.46 98.1 14.93 I9II-I7 333-93 217.63 From the seven positions of AB (1853-1911) we have for the proper motion of 72 Herculis: 1*019 in 171^2 From the catalogues: Auwers 1*030 in I74?4 Boss i. 060 in 173.2 Newcomb 1.054 in 173-7 Change in angle; probably a small proper motion in 8062. P Draconis. 1000. (3.0... 14.0) R. A. 17" 27" 43- Decl. + 52" 23' A and 0(12.7) 1912.351 I56?58 ii5"40 .389 156.70 "5-75 .411 156.43 115.77 8003. p Herculis. 2 2161. (4.0. ..5.1) R. A. 1 7' 19 33' Decl. + 37 15' A and C (12.8) 1911.222 223?07 119*99 .260 223.43 119.11 .299 223.45 119.28 1912.38 156.57 115.64 No other measures. The proper motion of (J Draco small and not very certain in amount : Auwers 0*020 in 290*9 Groombridge 0.017 in 298.7 Newcomb (Stand.) o.oii in 266.4 Boss 0.015 'n 297.0 1911.26 223.32 119.46 For the proper motion of AB. No other measures. Auwers 0*074 in 282?4 Boss 0.038 in 264.0 Newcomb 0.035 in 261.3 8015. 2 2167 rej. (8. i... 10. 7) 8065. 54 Ophiuchi. 22184. (6. 3. ..11.2) R. A. 17" 28 51* Decl. + 13 15' 1912.351 7i?8 21*85 389 71-5 21.94 .408 71.1 21.68 R. A 17' 21" 2i' Decl. + 49 38' 1907.351 222?8 l8"24 8.422 223.1 18.56 8.425 223 o ix.r,- 1912.38 71.5 21.82 There appears to be a slow decrease in the angle, the di remaining constant. The proper motion of 54 Ophiuchi certain in amount and direction 1908.07 223.0 18.49 No early measures of this pair. Auwers 0*070 in 224^8 Boss 0.036 in 173.1 Burnham: Measures of Proper Motion Stars 8067. S3 Ophiuchi. 2 34, App. I. (5. 6... 7.3) R. A. 17" 28'" 55 s Decl. + 9 40' A and B 1912.542 I9o?6o 41*27 .545 190.80 41.18 .562 190.90 41.40 No change since 1833. Common proper motion. This is given from meridian observations : A (v) Auwers o"i59 in 71 ?3 Boss 0.165 in 72.0 B (v 1 ) Auwers 0.153 in 70.9 Boss 0.158 in 72.0 8093. Sh 251. (6. 5... 8.5) R. A. if 33 5" Decl. + 2 6' A and C (10.4) 1912.526 I7?57 I32"50 .542 17.58 132.46 .545 17.27 132.26 1912.55 190.77 41-28 No material change since 1835. The proper motion of 53 Ophiuchi is uncertain, and I have, therefore, connected two small stars. A and C (10.6) 1912.526 344?70 93':95 B and D (10.6) 1912.526 223?35 91^40 Auwers o"o6i in 255^8 Boss 0.017 in 210.6 8068. 22185. (7.0...IO.O) R. A. 17" 28"" 56' Decl. + 6 6' A and C (7.7) 1909.455 207?7o 83"6s .496 207.60 83.75 .512 207.58 84.10 1912.53 17-47 132.41 The proper motion of the principal star is : Boss 0*047 in H2?5 As there has been no change in AB, this is the movement of the other component. This will be more accurately found here- after from further measures of the faint star. 8099. 26 Draconis. $962. (S.S...IQ.I) R. A. 17" 33 45' Decl. + 61 58' 1908.518 35i?5 i':o6 575 353-0 i. 21 597 348.5 1.16 1908.56 351.0 1.14 1910.164 352?5 i "21 .184 350.5 1.13 452 350-3 1-39 .471 352.4 1.19 473 346.8 1.29 1909.49 207.63 83.83 For an independent determination of the motion of C, I have connected a 10.5 m star: C and D 1909-455 182^30 I4o"73 .496 182.13 140.68 .512 182.43 140.60 1910.34 350.5 1-24 The elements of the orbit are as uncertain now as they were twenty years ago, although the described arc is 157. The proper motion of the binary system is : A. G. Hels. o"s83 in 152^7 Groombridge 0.563 in 155.4 Porter 0.569 in 154.2 Boss 0.563 in 154.5 8114. 22194. (6. 2... 8. 5) R. A. 17" 36 io' Decl. + 24 34' A and DM (24) 3226 (9.0) 1909.266 i6i?42 i63''o8 .304 161.20 164.28 .340 161.28 163.88 1909.49 182.29 140.67 A and B have a common proper motion : Porter o"o7O in 2io?8 Furner 0.062 in 216.3 C has a much larger motion : Porter 0^578 in 3og?3 Glasgow 0.617 in 306.0 Furner 0.632 in 304.7 8076. v 1 , \" Draconis. Z 35, App. I. (4.6.. .4.6) R. A. 17" 29"- 48" Decl. + 55 16' 1910.397 3ii?88 61^49 .414 312.26 62.02 .416 312.00 62.09 .436 312.35 61.47 1909.30 161.30 164.05 From meridian positions : 1880.4 i6i?3 i62!'9 A. G. Ber. A and B appear to have the same proper motion. A. G. Ber. 0*056 in 345?8 Boss 0.052 in 340.1 1910.42 312.12 61.77 15 221 Burnham: Measures of Proper Motion Stars 8120. p 1251. (6.0... 11.5) R. A. 17* 36 35' Ded. + i6 i' A and C (12.8) 1910.280 276! 25 154*86 375 276.30 154-90 .414 276.57 155.45 1910.36 276.37 155-07 For the proper motion of A. This from meridian observa- tions is : A. G. Ber. o".\2i in 35o?4 Porter 0.115 in 360.0 Boss 0.096 in 358.3 8123. A. G. 212. (9.5... 9. 5) R. A. 17" 36" 47' Decl. + 5 23' 1907-331 351 273 26.0 2:28 2.28 1907-34 26.6 2.28 8135. Schj 15. (7. i... 8. 2) R. A. 17" 38 28' Decl. 1 41' A and C (9.5) 1910.375 I47?5o 139:31 .414 436 147.83 147-75 139.43 139-37 1910.41 147.69 139.37 The only other measures are given in Part II of the General Catalogue. 8136. 61 Ophiuchi. "S. 2202. (5. 5... 5. 8) R. A. 17" 38 33' Decl. + 2 38' A and B 1912.526 02?7S 20:37 542 545 93.30 93-43 20.56 20.50 I9I2-53 93.16 B and C (12.5) 1912.542 545 28!6o 27.93 20.48 96:03 95-78 95-90 1912.54 28.26 The proper motion of A is given : 0^018 in 334?9 0.014 in 347.9 Auwers Boss As there has been no change in B for 90 years, the proper motion must be exactly the same. The meridian positions give for B : Boss o'ois in 23 ?2 8142. H 49 77. (7-6... 9- 5) R. A. 17" 39 m 16' Decl. 3 27' AB and 0(13.7) 1910.280 143?! 21:76 21.75 21.85 375 .414 144.4 142.1 1910.36 143.2 21.79 No other measures of the Herschel companion. 8155. 22211. (8. 2... 9. 2) R.A. I7"40 m 27 t Decl. 1 10' A and B 1910.280 ii4?9 10^25 375 .414 115-0 "5.3 10.21 IO.24 1910.36 II5.I 10.23 A and C (9.2) 1910.280 I97?82 105:52 375 197.80 105.23 .414 197-83 105.50 1910.36 197-82 105.42 The only other measure of C is given in the General Cata- logue, 8169. H 2810. (7. 3... 9. 8) R. A. 17* 42 28' Decl. 19 58' 1909.513 515 531 190?! 189.7 189.8 40:92 40.00 40.77 1909.52 189.9 40.86 H 2810 and h 1986 1909-513 27o?4 297': i .531 270.3 297.0 1909.52 270.3 297.0 h 1986 and star io.7m 1909.513 30i?7 32:67 The star is measured from the nucleus on the /> side of h 1986. The following is the relation of the two condensations : 1009.513 H77 30:44 In the General Catalogue the nebula is erroneously called h 4333 ; that is the number in Herschel's General Catalogue of Nebulae. 8182. H' Draconis. 22241. (4.0. ..5.2) R. A. 17" 44 5" Decl. + 72 13' A and B 1908.370 I545 30^54 .383 403 15.88 15.43 30.50 30.55 1908.39 15-59 30.53 222 Burnham: Measures of Proper Motion Stars A and C (10.5) 1908.252 I2i?6o 92746 .288 122. oo 92.28 .331 121.27 92.02 .370 122.00 92.55 A and D (13.2) I907-S97 236?o 3o"20 8.331 235.2 30.83 8.482 236.3 30.53 1908.14 235.8 30.52 The only other measures are by Lewis in 1905. 8209. 23128. (7.0... 10.5) R. A. 17* 46 28' Decl. 7 53' A and C (12.8) 1911.449 ioi?oo 92:'37 .468 101.40 93.02 .471 102.40 92.28 .509 101.87 93-o8 1908.31 121.72 92.33 The proper motion of A as deduced from the five measures 1857-1908) of the small star C should be more accurate than at from any other data: 0^283 in 176? 15 Some of the former results from meridian positions are: Newcomb o"z68 in I78?4 Greenwich 0.279 m '77-8 Boss 0.267 in 176.9 I have measured a small star from C. When these stars e remeasured hereafter, it is practically certain that there ill be no change. C and D (12.0) 1908.370 19? 13 67^37 383 19.05 67.45 .403 18.75 67.93 1911.47 101.89 92.69 For the proper motion of AB. No material change in tl close pair. Paris 0^2 18 in i8o?o Porter 0.234 in 190.2 8211. 22235. (7. 5... 9. i) R. A. I7" 46 44' Decl. 2 14' 1908.249 I24?o 19*38 .252 123.7 19-33 .266 123.3 19.46 1908.39 18.98 67.58 8187. 22230. (8. 2... 8. 7) R. A. 17" 44 54' Decl. + 7 57' A and B 1909.304 84? 38 45?5i .378 84.88 45.57 .512 84.67 45.42 1908.26 123.7 19.39 Perhaps a little increase in distance. 8223. H 1307. (7.o...ii.o) R. A. 17" 47 m 45' Decl. + 27 13' 1910.225 323^4 33"6o .260 322.9 33.15 -337 323-2 33-68 1009.40 84.64 45.50 A and C (10.5) 1909.304 I09?6o 37770 .378 109.85 37.43 .512 109.63 37.66 1909.40 109.69 37.60 The four positions by 'S, A and p (1831-1909) of these stars ve for the proper motion of A : AB R. A. o'/oi6 Decl. + o"oi6 AC 0.009 0.024 1910.27 323.2 33.48 Change in distance is probable. 8224. 02(App.)i6o. (8. 2... 8. 6) R. A. 17" 47 46' Decl. + 10 59' 1910.263 i9i45 102^15 .280 I9I-3S 102.23 -337 iQi-30 101.94 0.012 +O.O20 Therefore the proper motion of the principal star is : o"o23 in 329^0 8197. 22233. (7- 5... 10. 3) R. A. 17" 45 52' Decl. + 2 56' A and C (13.6) 1907.597 141?! 22^54 8.331 140.3 22.79 8.482 141.3 22.81 1910.29 I9L37 102. II Further measures are necessary to confirm the apparer change. The meridian positions are uncertain in distance: 1875 191 ?6 ioi"3 A. G. Leip. 1880 191.4 105.8 Munich 1908.14 140.9 22.71 223 Burnham: Measures of Proper Motion Stars 8245. Ho 72. (9.0... 11. 5) R. A. 17" si m 27" Decl. + 33 27' A and B 1907.197 2?7 8:34 217 2.3 8.53 8247. 22251. (8. 2... n. 2) R. A. I7 h 5i m 32" Decl. + 49 39' 1909.266 27?o I5''io .302 28.1 15.22 .304 26.9 15.12 329 3-7 8-57 1908.252 2.2 8.67 .288 3.4 8.82 .370 1.9 8.98 .383 3-2 9-10 444 2.3 9.16 1909.304 2.0 9.12 .342 2.8 8.85 378 3-4 9-03 .438 2.5 9.06 1910.225 1.5 9.19 337 2.1 9.39 1909.29 27.3 15.15 Possibly a little change in distance and angle. 8255. 22253. (7- 5--. io. 2) R. A. 17" 52 55" Decl. + 14 38' A and B 1910.280 77?6 i4:'9i -356 79-5 M-93 375 78.6 14.95 395 2.4 9.25 1911.241 2.5 9.54 .299 1-5 9-58 337 3-0 9-60 375 3-0 9-34 The several mean results of the above measures are : 1907.25 2?9 8:48 3n 1910.34 78.6 14.93 Change from proper motion of A. A and C (10.3) 1910.280 63?75 73:61 .356 63.90 73.78 375 63.85 73.43 1908.35 2.6 8.95 5n 1909.37 2.7 9.02 4n 1910.32 2.0 9.28 311 1911.31 2.5 9.51 4n From positions by Ho (2), Doo (2) and P (7), making alto- gether measures on 43 n, we have for the proper motion of B : 0^250 in 359?7 A and C 1907.351 364 9"os 1910.337 377 9"39 397 38.9 9-01 .452 36.9 9.50 1910.34 63.83 73.61 The change shown in the distance of C is not likely to be real; the first measure is only a single night. 8260. 22252. (8.0... 8. 3) R, A. 17" 52 58' Decl. + 2 3' A and (8.7) 1909.227 164^17 04:31 .304 164.20 94.39 .378 164.12 94.36 1910.40 37.8 9.30 I9II-337 38?3 9" 15 .4" 36.4 9-07 .471 37-0 9-40 1909.30 164.16 94.35 There is no indication of proper motion in A or in the com- parison star, DM (2) 3444, from these and the measures of 1800. 1911.41 37-2 9-21 No change in C. B and C 1910.337 107?! 5:51 397 105 -i 5-48 .454 107.4 5-69 Some of the meridian positions give: 1825 i6i?i 96:6 Weisse 1850 162.3 92.7 Lament 1880 164.7 96-5 A. G. Alb. 8268 2 2254 (83 87) 1910.40 106.5 5.56 As a further check on this extraordinary motion of a very small star, I have connected with it one still fainter. B and D (12.0) 1911.487 56?32 I34"i3 R. A. 17" 53 27' Decl. + 12 27' A and C (12.8) 1910.375 66? 17 55:47 11.302 66.52 55.53 11.334 66.60 54.95 59 50.00 134.19 .526 56.48 I34-I5 1911.00 66.43 55-32 I9II.5I 56-49 I34-I6 No other measures. A very faint star near C. 224 Burnham: Measures of Proper Motion Stars 8274. y Draconis. JB 633. (2. 2... 13.0) R. A. 17" S3 1 " 49" Decl. + 51 30' A and B 1907.465 I5i?78 2o"94 .485 151.10 21.03 1907.47 151-44 20.98 The nearest companion, B, appears to be moving with the bright star. The proper motion of y Draconis is given in the tar catalogues : Auwers (F. C.) 0*028 in 214^6 Boss 0.027 in 197-9 Newcomb 0.025 m I 94- Groombridge 0.021 in 206.2 A continuation of the measures of the several companions vill furnish an independent value. 1907.351 .465 .485 A and E (11.5) 234?35 234.55 234.50 97.43 97.37 1907.43 234-47 97-39 A and G (11.5) 1907.351 28!io I39"3i .465 28.00 139-73 .485 27.91 139.60 J007-43 28.00 139-55 A and F(io.8) 1907.465 115^82 125^48 .485 115.68 125.22 1907.47 "5-75 125-35 8280. O2 (App.) 161. (6. 3... 8. 2) R. A. 17" 54 29" Decl. + 8 52' A and B 1911.280 76^75 .299 76.68 .302 76.55 62.20 61.75 1911.29 76.66 62.10 One of these stars may have a small proper motion. A and C (10.5) 1911.299 .302 126? 47 126.32 114.19 1911.30 126.40 114.24 8295. O2 (App.) 163. (7.0... 7. i) R. A. 17" 55 m 22' Decl. + 62 37' A and B 1911.258 39? 93 .260 40.58 .280 40.65 1911.27 40-39 57"28 57-57 57-18 57-34 One of these stars has a considerable proper motion. From the four positions by A, Fr and P, the apparent motion of Bis: o"i:6 in I57?4 To determine which is the moving star, I have measured a third star. B and C (9.8) -337 339-22 i83"go -353 339-32 183.73 1911.34 339-27 183.81 8303. T Ophiuchi. 22262. (5.0... 5. 7) R. A. 17" 56'" 33' Decl. 8 11' 1907.293 .482 -485 260.0 260.7 1-73 1-93 2.OI 1907.42 260.1 1.89 Nothing can be known of the orbit of this binary before the end of this century, and probably not then. For the proper motion of T Ophiuchi we have : Auwers o".O2$ in io8?6 Newcomb 0.075 ' n 124.1 Boss 0.045 in 152.5 8316. Ho 564. (7.0... 12. 7) R. A. 17" 57 37' Decl. + 26 22' A and B 1908.331 3244 3i''23 .422 -537 326.1 324.2 3L94 31-30 1908.43 324-9 31-49 The measures of AB should be continued for a final value of the proper motion of A. Measures o"747 in i64?o Porter 0.660 in 148.0 A and C (10.9) 1908.252 64^50 fe'/So .331 64.00 82.70 .422 64.53 83.13 1908.33 64-34 82.88 In the General Catalogue, the distance of AB by Doolittle in 1902 should read 27"82 instead of 24'.'82. No other measures of AC. 8325. 825. (8. 4... 13.0) R. A. 17" 58 20' Decl. + 25 22' A and B 1910.397 .414 1910.41 193-7 193.0 12:34 12.26 12.30 225 Burnham: Measures of Proper Motion Stars B and C (8.5) ipio.337 233 ?p 9?76 397 232.7 9-64 .414 231.5 9.86 8347. 22777- (6. 3... 8. 2) R.A. i8"o m i' Decl. +48" 28' A and C (10.0) 1910.38 232.7 9.75 A and C (= 2 2268) I9I0.337 2io?o8 2o"88 1910.225 286^38 88?37 .244 285.83 88.73 .260 285.83 89.03 .414 209.93 20.61 .436 210.70 20.65 1910.24 286.01 XX. 7 i The only other position is that in Part II of the General 1910.40 210.24 20.71 A has a small proper motion. The other measures are given in the General Catalogue. 8340. 7oOphiuchi. 22272. (4. i... 6.1) R. A. 17' 59" 23' Decl. + 2 33' A and B 1007.291 i6>?7 2^38 .293 166.4 2.51 .348 166.5 2.77 .482 165.5 2.72 Catalogue. A is given a small proper motion : Battermann o"oi7 in g6?7 Further measures of C will give a new and better value. 8349. 02(App.)i6s. (7.4..-7-9) R.A. 18" o 8' Decl. + 4 33' 1911.583 141^70 66"i9 .602 142.43 66.12 .625 142.10 66.ii 1907-35 166.5 2.59 A and a (12.7) 1907.293 215^7 46T25 .312 215.4 46.04 331 215.9 45.89 .348 215.5 46.10 1911.60 142.08 66.14 No change since 1874. 8354. 22278. (6. 8... 7. 3) 1907.32 215.62 46.07 A and d (12.2) 1907.312 35?25 106:39 331 34-92 106.37 348 35-25 106.60 R.A. i8 h o m 47 > Decl. + 56 26' A and D (9.3) 1009.148 191. 30 20 1 "20 .151 191.10 200.83 .164 191.20 200.86 1907-33 35-14 106.45 From six positions of these small stars by HI and (1878- 1007) we have for the proper motion of 70 Ophiuchi: Measures of Ao 1*065 in i68?3 Measures of Ad 1.045 m 168.3 Some of the values in the star catalogues are : Auwers 1*126 in I7o?o Boss 1.123 in 169.9 Newcomb 1.127 in 166.9 These measures are continued for further improvement in the value of the proper motion of the binary : 1909.15 191.20 200.96 This has been measured : 1880.58 ig2?02 202756 2n Bl. These positions give for the proper motion of A : o"n6 in 252 ?6 The measures should be continued later. The comparison star has a faint companion: D and d (13.7) 1909.164 226?2 5^26 .186 225.4 5-02 A and a 1910.452 218^67 43?68 .455 218.05 43-74 473 217.55 43-80 1909.17 --5 5.14 8359. 72 Ophiuchi. H 5943 (37 ) 1910.46 218.09 43-74 A and d 1910.452 34? 15 i09Toi 455 34-12 109.12 473 33-55 109.06 548 34-35 109.26 R. A. 18" i 1 " 40' Decl. + 9 33' A and D (10.8) 1911.583 i6s?55 54^56 .625 166.30 54.40 .644 166.38 54.33 1910.48 ,:i "i 109.11 1911.62 166.08 54. 43 Burnham: Measures of Proper Motion Stars The fi measures of the faint star (1878-1911) give for the proper motion of 72 Ophiuchi: o"op3 in 326^0 Values from meridian observations are: Boss o"no in 323?o Auwers 0.116 in 318.3 Newcomb o.m in 322.8 8381. S 700. (7. 7... 9. 6) R.A. i8"3 m 38' Decl. 16 47' A and B 1910.400 292?! i8'.'63 .493 292.1 18.81 .509 292.6 18.70 8361. H 1313. (9. 3... 11. 6) R.A. i8 h i m 42' Decl. + 2842' 1910.50 292.3 18.71 A and C (8.0) 1910.400 353?8 28"8o 493 353-7 28.72 509 353-6 28.56 1907.482 309?! 14738 .504 310.0 14.50 .542 308.9 14.66 1910.50 353.7 28.69 These stars form a part of h 1907. Probably unchanged. 1907.51 309.3 14.51 The apparent change in the distance is not likely to be real. 8369. HV. 74. (6. 7... 9. 5) R. A. 18" 2 m 17' Decl. + 13 3' 1911.583 137^23 41^88 8382. 102 Herculis. A. G. Clark 8. (5. 5. ..12. 5) R. A. 18" 3 38' Decl. + 20 48' 1911.241 I36?7 23^84 -302 135-3 23.44 -334 136.6 23.31 -395 136.0 23.15 .625 136.00 42.05 1911.32 136.1 23.44 1911.60 I37-OI 42.01 Unchanged. 8372. 99 Herculis. A. C. 15. (5. 2... 10.5) R. A. 18" 2 171 28' Decl. + 30 33' A and C (11. 5) 1912.296 52?55 93"70 3Si 52.90 93.52 353 53.26 93.13 The four measures (1878-1911) show no certain change. The proper motion of 102 Herculis is small: Auwers o"ois in 2i2?g Boss 0.017 in 184.7 8383. Z 2290. (8. 5... 10. 8) R. A. 18" 3 m 39' Decl. + 50 o' A and C (12.3) 1909. 170 69?so i77"48 1912.33 52.90 93.45 .186 69.68 177-44 .227 69.62 177-51 No other measures of the faint star. The proper motion of the close pair is : Auwers 0^135 in 301 ? Paris 0.115 in 3i-5 Boss 0.113 in 303.7 8380. 73 Ophiuchi. 22281. (5. 7... 7. 2) R. A. 18" 3 m 36' Decl. + 3 &' AB and C (12.6) 1912.236 191 45 67"22 .274 191.00 66.98 351 191-43 67.15 1909.19 69.60 177.48 The former measures are somewhat uncertain in distance : 1880.32 70?I2 I77"36 in Bl 1880.80 70.00 176.25 in Bl. No material change in AB. 8384. 22283. (7. 2... 7. 7) R. A. i8> 3 43' Decl. + 6 8' 1909.515 8o?o o':86 531 83.0 0.91 1912.28 191.29 67.12 The proper motion of the binary system is given from merid- ian positions: Auwers o"o22 in H9?5 Ross n mo in rr>7 8 1909.52 81.5 0.88 Slow angular motion. The Herschel bright planetary nebula is about i distant /. The 15 m star, near the central star, measured at Lick Observatory in 1891, was too faint for good mpasnrps lirrp 227 Burnham: Measures of Proper Motion Stars h 2000 and star 12. 6m 1909-512 308?43 89719 SIS 308.70 88.96 531 308.37 89.06 A and C (10.9) 1908.403 4o?30 7;:'35 .422 40.22 77.29 .425 40.02 77.32 1909.52 308.50 89.07 8388. 0637- (6. 5. ..12. 5) R. A. 18" 3 m 54' Decl. + 3 6' A and C (10.8) 1910.490 237^58 104:97 493 237-38 104.85 .509 237.47 104.86 1908.42 40.18 77.32 The prior measures of C are discordant in distance, and further observations are required. 1881.29 3942 77753 m Bl 1881.77 40.08 78.47 in Bl. 8453. H 2827. (9.8... 9. 9) 1910.50 237.48 104.89 For the proper motion of AB. Porter o7i79 in i8o?o R.A. i8 h 9 m 59' Decl. 19 55' I909.53I 254?2 20704 534 253.2 19.82 Boss 0.185 in 166.0 8398. Ho 267. (7.0... 13.0) R. A. 18" 4 53' Dec!. 5 13' 1007.312 355?o 14:11 348 355-6 13-94 351 355-3 14-00 I909-53 253.7 19.93 H 2827 is in the middle of h 2002, which is large and diffused. 8471. H 1317. (9.8... 11. 9) R. A. 18" 12'" 10" Decl. + 27 20' IQO? 5O4 I286 I7 ff 76 1907.34 355-3 14-02 .523 129.0 17.76 The distance in the early measure of Ho is apparently too large. 8404. 22291. (8. 5... 9.0) R. A. 18" 5 53' Decl. + 34 o' 1907.348 339?7 27711 7-351 339-6 27.17 8.479 340.0 26.95 1907.51 128.8 17.76 This is probably the pair measured by Miller. The other pairs were not found by sweeping in the immediate vicinity. (See Part II General Catalogue.) 8481. H 5494. (6.0... ii. 8) R. A. 18" 13 20- Decl. + 7" 12' 1907.73 339-8 27-08 Distance increasing. One of the components has a proper motion of 07025 in 339? ( 180). A third star should be 1911.241 69^70 39798 .299 68.60 39.86 .302 69.82 40.19 connected. 8417. 2 2293 rej. (7. 8... 10. 5) R. A. 18" 6" 46' Decl. + 48 22' 1907.329 82 ?8 12788 .348 82.8 12.91 1911.28 69.37 40.01 The other measures are recent. The proper motion of A is : Boss 07063 in 275?5 8482. 22305. (8. 2... 9. 8) 1907.34 82.8 12.90 The angle by Hu requires a correction of 180. No early measures. 8440. 22208. (8.5... 9. 7) R. A. 18" 13-" 24' Decl. + 51 i/ A and C (10.6) 1908.403 I97?22 ioo739 .422 196.95 100.76 .425 107.18 100.76 R. A. 18" 8" 51' Decl. + 41 21' A and B 1908.422 I79?2 2717 .425 179-4 2-06 1908.42 197.12 100.64 The only other measures are : 1880.58 I97!6o 102702 2n Bl. 1908.42 179.3 2. ii Probably unchanged. If this distance was right, A should have a proper motion of o7os8 in 229?!. The measures should be repeated after a few years. aaB Burnham: Measures of Proper Motion Stars 8483. Schj 16. (7. 9... 9. 2) R. A. 18" 13 24" Dec!. 5 i' 1911.548 I97?8 2':78 .564 200. i 2.69 .567 200.0 2.82 The measures of the small star (1836-1911) should give the proper motion of the large star with the highest accuracy. The seven positions by 2, A, HI and p, from measures on 20 n, give the proper motion of ti Serpentis: o".8&7 in 217?! Other values are : Auwers o"go4 in 22O?6 Newcomb 0.886 in 220.4 Boss 0.898 in 218.9 8512. 22311. (8. 9... 9. 9) R. A. 18" i6 m 38' Decl. + 11 23' 1911.468 I53?3 5"i9 471 154-5 5-12 -487 153-5 5-25 1911.56 199.3 2.76 Change in angle. 8485. 22303. (6. 7... 9. 2) R. A. 18" 13 34 s Decl. 8 2' 1908.594 224?! 2*76 .597 227.5 2.53 .613 227.8 2.54 1908.60 226.5 2.61 Perhaps some change in angle. 8492. A. G. 220. (9. i... 9. 2) R. A. i8"i4 nl 2i s Decl. + 51 o' I9H.433 307?7 io"88 .449 307.0 11.09 .468 307.2 10.83 1911.48 153.8 5.19 From the measures by 2, A, Sp, Lv and (3 on 19 n (1830- 1911) we have the proper motion of A : o"o47 in I93?3 A and star 9.8m 1911.487 33302 I43"7 509 333-17 I42.57 .526 333-22 142.71 1911.45 307.3 10.93 8496. 74 Ophiuchi. H 5495. (4-9...H.6) R. A. 18" 14 S3 8 Decl. + 3 19' 1911.302 28s?7 27':oo .337 286.6 28.06 .356 286.0 28.17 1911-51 333-14 142.78 A and DM (11) 3438 (9-5) 1911.487 28g?22 i48'/86 .509 289.23 148.88 .526 289.15 149.05 1911.51 289.20 148.93 Later measures will give two independent values of the motion of A. 8574. 39 Draconis. 22323. (4. 7... 7. 7) R. A. 18" 22 m io s Decl. + 58 44' C and D (7.1.. .10.7) 1910.184 66?57 I98'.'io .206 66.33 197-94 .225 66.48 197-74 1911.33 286.1 28.04 A comparison of the late positions with that of 1878 indicates a small proper motion principally in declination, instead of R. A. as shown by the meridian observations, but the early position is on a single night, and therefore further measures are needed. Auwers o"oi9 in 264?! Boss 0.015 in 258.7 For a further independent determination of this motion, I have measured a third faint star : A and C (12.0) 1912.526 8o?oo s8"37 .542 79.90 57.85 .545 80.23 57.75 1910.20 66.46 197.93 The following is erroneously given as measured from A : 1880.03 6s?87 io8':o8 2n Bl. There are many stars in the field nearer AB than this. One distant star was measured by mistake for D : A and E (n.o) 1910.184 8o?so i5o"32 .206 80.07 150.74 1912.53 80.04 57-99 8498. 11 Scrpentis. 2 8, App. I. (3. 3... 12.0) R. A. 18" 15 6 s Decl. 2 56' 1911.302 62?6s i68"94 337 62.70 168.67 .356 62.50 168.95 .373 62.48 168.80 1910.19 80.28 150.53 The proper motion of 39 Draconis is given : Auwers o"o6s in 326^5 Boss 0.064 in 328.7 1911.34 62.58 168.84 229 Burnham: Measures of Proper Motion Stars 8576. H 1325. (10.8... ii. 5) R. A. 18" 22 m 16' Decl. + 29 45' 1907.331 297?o 6"86 .351 296.5 6.50 .425 297.0 6.88 8614. p 966. (6.7...) R. A. 18" 25 25' Decl. 19 3' P 966 is the principal star of the coarse cluster, Messier 25. Many of these stars were measured by Glasenapp, each on 2 n, and I have remeasured most of them in the hope of finding some small star with a sensible proper motion. As there is no indication of any change, the measures were not repeated. The results of the comparison are as follows : AH 1890.52 295?66 7i"6s Gla 1909.59 295.38 72.27 p AE 1890.52 282.02 145.16 Gla 1009-59 281.68 144.95 P EL 1890.52 122.25 21.03 Gla 1909.59 122.55 21.05 p EF 1890.52 290.71 25.06 Gla 1909.59 291.32 25.23 p EK 1890.54 26.44 30.73 Gla 1909.59 27.68 30.33 P CD 1890.50 172.07 11.94 Gla 1909.59 171.90 11.23 p PC 1890.55 263.92 93.59 Gla 1909.59 263.69 93.67 p PQ 1890.54 300.60 68.46 Gla 1909.59 300.93 68.79 P AP 1890.53 194-77 163-58 Gla 1909.59 194.62 164.23 p AR 1890.55 90.49 77.08 Gla 1909.63 00.43 76.67 P HJ 1890.52 310.70 43.47 Gla 1909-63 310.78 44.27 p JM 1890.54 345-57 70.36 Gla 1909.63 345.32 70.23 p The lettering as given in Glasenapp (I) is followed here. 8615. 22329. (7.7... 9.0) R. A. 18" 25 35' Decl. + 6 23' 1908.597 436 4"o6 .613 44.7 4.20 633 45-6 4-25 1907.37 296.8 6.75 Probably no motion ; but disagrees with Herschel's estimated position in 1828. 8578. Draconis. O2 353. (4. 8... 6.5) R. A. 18* 22 29" Decl. + 71 16' AB and C (12.7) 1912.296 H4?8s 7o"72 .312 114.25 70.96 .351 "5-13 70.66 1912.32 H4-74 70.78 No other measures. The proper motion of the large star has been given : Auwers (Brad.) o7o2i in 3s8?7 Auwers (F. C.) 0.027 n 319.7 Boss 0.032 in 353.1 8579. 22319. (7. 2... 7. 6) R. A. 18* 22 30' Decl. + 19 13' A and C (10.0) 1908.288 274?4 39?6i 444 274.5 39-72 .460 274.4 39-95 1908.40 274.4 39-76 The measures of the small star furnish data for a very accurate value of the proper motion of A. The measures of 2, A and (1829-1908) give: Measures 0^043 in 30^0 A. G. Ber. 0.045 in 51.7 8595. 22322. (5.7...".o) R. A. 18" 24" 8' Decl. + 3 59' A and C (12.0) 1912.526 204?95 66^63 .542 295.73 66.74 545 295-57 67.43 1908.61 44.6 4.17 No change in angle or distance since 1830. 8628. 22333. (7-5... 8. i) R. A. 18" 26" 38' Decl. + 32 10' A and B 1909.227 333?6 6?22 -266 333 4 6.II 1912.53 295-42 66.93 A and D (12.1) 1912.526 I9375 85747 542 193-43 85-21 545 I93-48 84.77 1912.53 193-55 85.15 The magnitude of the principal star in DM is 7.0; no proper motion found in the catalogues examined. No sensible change in AB since Struve. No other measures of the distant stars. 1909.25 333.5 6.16 No relative motion. 230 Burnham: Measures of Proper Motion Stars A and C 8646. O2 (App.) 171. (6. 5-. -7-4) 1909.186 .227 3525 35-05 i63"97 163.58 R. A. 18" 28 50' Decl. + 38 45' 1909-21 35.15 163.77 A and B 1911.162 321 ?3O 143721 B and C (12.7) .164 321.20 143.11 1909.186 37 13 i6i':i 3 .200 321.35 143-73 .227 .266 36-90 37-35 161.08 161 . 10 I9II.I8 321.28 143-35 1909.23 37.13 161.10 The former measures of BC have too large a difference in distance to use the mean : 1880.31 3723 :6o"i6 in Bl 1880.75 37-32 161.24 in Bl. 8630. p 642. (9.0...II.O) R. A. 18" 26"" 45' Decl. 10 32' 1911.449 .509 .526 88?8 90.2 89.8 3.80 4.00 1911.49 89.6 One of the brighter stars in h 3751. 3.86 8636. O2 355 rej. (6. 2... 9. 5) R. A. 18" 27 m 38" Decl. + 8 1 1' 1912.564 .581 .583 248^28 248.65 248.45 38"55 38.26 38.38 1912.57 248.46 38.40 There is no certain change in the place of the companion since 1866. 8643. 2 2340.(8.3...9.2) R. A. 18" 28 30' Decl. + 31 30' B and C (9.4) 1909.186 I55i5 206^73 .227 I55.I8 206.64 .266 155.05 206.65 1009.23 I55.I3 206.67 The previous position is : 1880.53 i5547 Bl. The measures tend to show that the proper motion is in A, the larger of the two small stars. The measures of AB make the annual motion o"o22 on the line joining the stars. 8644. H 1329. (8. 9... 13. 6) R. A. 18" 28 32' Decl. + 11 i/ The four positions by A, Fr and P give for the apparent motion of A: o"iso in 2i5?7 To show whether or not there is any motion in B, I have connected a faint star: A and a (10.7) 1911.162 I38?6o 85*90 .200 138.68 85.95 1911.18 138.64 85.92 The proper motions from the Paris catalogue are: A o"o82 in I54?6 B 0.150 in 90.0 8650. O~S3s6rej. (7.0. ..8. 7) R. A. 18" 29 20' Decl. + 40 4' A and B 1910.280 305?45 34"96~ 299 -375 305.88 305-75 35-33 35-44 1910.32 305-69 35-24 1910.280 299 375 A and C (9.5) 48 S 4.38 4-53 52?o6 51.67 51-88 1910.32 4-59 51.87 B and C 1910.280 .299 375 4 6?77 46.38 46.48 45-52 45-22 45-33 1910.32 46.54 45.36 1910.299 395 3i6?8 317-7 15-96 I9I0.35 317-2 15- No other measures. H's angle is 328. As there is no change in BC since 1866, it is obvious the motion is in the principal star. From the measures of A and p the proper motion of A is : AB R. A. o"oso Decl. + o"osi AC 0.038 0.041 0.044 Therefore the proper motion of A is : oro63 in 3i6?2 +0.046 AC and BC are transposed in Part II of the General Cola logue; and so in A, Hu, and others. 231 Burnham: Measures of Proper Motion Stars 8654. 22342. (5.7... 12. 5) R. A. I8 h 29 m 4i > Decl. + 4 50' A and C (8.5) 1910.531 6?45 29?54 .548 6.53 29-90 551 6.98 29.53 8699. 2 2350 rej. (6.7...II.O) R.A. 18" 33" 30" Decl. 7 54' 1907.293 I95?7 22"o4 .348 196.2 22.33 351 196.2 21.76 19Q7-33 196.0 22.04 Change in distance is probable. 8702. H 1332. (7. 8... 9.2) R. A. 18" 33"' 47' Decl. + 24 33' 1910.493 229?s 26:34 .509 229.2 26.15 .548 228.9 26.24 1910.54 6.65 29.66 The large star not given in Boss (G. C.). From the measures of AC it has a proper motion of o'/os in 144. 8660. 22345. (8.4... 10. i ) R. A. 18" 30 23' Decl. + 20 59' 1911.241 2o6?4 8!'76 .260 207.2 8.89 .280 205.8 8.78 1910.52 229.2 26.24 There may be a little change. 8707. ^ 2355 rej. (7-0. . .10.2) R.A. iS" 34 3' Decl. + 7 1 5' 1911.241 138^07 25^04 .260 137-63 24.91 .299 137-68 24.92 1911.26 206.5 8.81 The measures of 2, A, En, HI and on 23n (1832-1911) give the proper motion of A : o'.'o43 in 8o?2 8664. H 864. (7.0... 12.0) R. A. 18" 30 m 34' Decl. + 4 52' 1910.493 322?2 i8''32 .509 324-9 J8.26 .531 322.0 18.30 1911.27 137.79 24.96 8725. 2 Aquiloe. H V. 36. (s.5...io.o) R. A. 18" 35 42' Decl. 9 io' 1912.465 I30?o6 52"48 .504 130.30 52.68 .507 130.07 52.46 1910.51 323-0 18.29 Slow motion in angle. 8685. Arg. 22. (8.0... 8. 5) R. A. 18" 32 m 28' Decl. 25 37' A and C (8.4) 1911.564 28s?47 53"30 .583 285.68 52.72 1912.49 130.14 52-Si The measures of the small star (1879-1912) show that 2 Aquilae has no sensible proper motion; and this is equally obvious from the meridian positions : Auwers o"oo8 in 3io?2 Boss 0.014 in 106.7 8732. 22368. (7-2... 7- 4) R.A.i8"36 m 7' Decl. + 52 14' A and B 7907.271 326?7 ""SO .329 327.9 J- 62 1911.57 285.57 53-01 It is certain that there is a large error in the Washington measure of 1862. There is probably no change. 8689. 22352. (7.3. ..io. 3) R.A. I832 m 39' Decl. + 34 46' A and C (10.2) 1909.186 i6i?os 209*96 .266 161.35 210. 01 .304 161.33 210.32 1909.25 161.24 210. io No evidence of proper motion. 1880.31 i6i?35 209^75 in Bl l88l.7S 161.25 210.70 in Bl. 1907-30 327-3 1.56 232 Burnham: Measures of Proper Motion Stars A and C (n.o) 1907.291 124? 5 36^74 .312 124.6 36.52 329 124.9 36.48 8759. 22384. (8.0... 8.5) R. A. 18" 38'" 33 s Decl. + 67 o' AB and C (12.4) I9I0.375 i66?70 H3"55 .397 167.18 113-35 1907.31 124.7 36.58 1908.370 I24?98 36"84 .460 124.33 36.63 .463 125.18 36.69 1910.39 166.94 113-45 For the proper motion of AB. Porter 0^233 in 324?8 Schroeter 0.243 in 327.4 AB and Dreyer 6677 1910.40 AR. A. 4 m 5s;o ADecl. 89':8 Discovered by Swift. From this the position (1860) is: R. A. 18" 33 37" Decl. + 67 o' 54" There is another faint, diffused nebula in the field with 12. 5m star attached. Dreyer 6677 and nebula 1910.307 157?! 11^:76 8761. 22374. (8. 8... 9. 2) R. A. i8"38 m 4i s Decl. + 27 36' A and B 1910.244 379 J4-'64 .260 37.7 14.56 .397 38.5 14-66 1908.43 124.83 36.72 Evidently a large error in the first measure of this in 1887 by Tarrant. Probably fixed. 8733. Hd Zones. (9.3...ii.o) R. A. 18" 36 m i8 s Decl. + o 33' 1907.523 mi 1 1 "72 .540 109.2 11.82 .581 108.4 11.76 1007.55 109-6 11.77 Disagrees with the Cincinnati measures of 1879. 8736. 22367. (7.0... 7. 5) R. A. 18" 36 39' Decl. + 30 1 1' AB and E (ii.o) 1909.340 341 32 149" '9 .342 341.32 148.83 .438 340.93 148.88 1910.30 38.0 14.62 A and DM (27) 3088 (9.0) 1910.244 358?58 150^38 .260 358.17 149.68 397 358.20 150.37 1909.37 34LI9 148.97 The prior measures are discordant and uncertain in distance. 1880.30 341^83 iso"82 in Bl 1880.75 341 -!3 148.67 in Bl. 8748. 22372. (6.7... 8. 2) R. A. 18" 37 48' Decl. + 34 38' B and C (11.3) 1909.186 6s?25 9i''o3 .266 65.05 90.86 .304 65.13 91.26 1910.30 358.32 150.14 Change doubtful in both. 1875 358?6 I5o"9 A. G. Camb. 8765. 22378. (8. 2... 9. 5) R. A. 18" 39 5 s Decl. + 35 26' B and C (10.8) 1910.225 247?27 2oi"86 .244 247.15 201.27 .260 247.03 201.42 1909.25 65.14 91.05 Probably without change. 1879.99 64? 99 90? 74 2n Bl. 8757. H 5501. (9. i... 10. 9) R.A. i8 h 38'"25' Decl. i 8' 1007.523 7?7 23^23 540 7.4 23.14 581 7-1 23.39 1910.24 247.15 201.52 Evidently B has no sensible proper motion : 1880.60 247?33 201:25 2n Bl. 8767. 22376. (7. 7... 8. 4) R. A. 18" 39 m 6 s Decl. + 30 17' A and B 1909.186 63?3 22^23 .266 63.8 22.11 .304 63.9 21.08 1007.55 7-4 23.25 No sensible change. This is DM ( 1) 3556. 1909.25 63.7 22.ii 233 Burnham: Measures of Proper Motion Stars A and C (10.8) 1909.186 207?20 8i76i .266 207.05 81.61 .304 207.33 81.37 8798. 22398. (8. 2... 8. 7) R. A. 18" 4i m 34' Decl. + 59 25' A and B 1907.312 isi?7 17709 .329 151-8 17-19 .348 I5I-7 I7-II 1909.25 207.19 81.53 The measures furnish no evidence of any proper motion in 22376: 1880.53 207?6i 8:730 2n Bl. 8779. 5 Aquilae. 22379. (S-6...7.4) R.A. 18" 40" 17' Decl. i 5' A and C (11.2) 1912.430 147?! 26763 .465 H6.5 25.93 .504 145-6 26.45 .507 145.8 26.45 I907-33 I5I-7 17-13 1909.170 151^8 17713 .266 152.0 17.13 .304 151.6 17.05 .342 151.9 17.11 1909.27 151.8 17.10 The change in B is very slow at this time. A and C (u.o) 1907.312 235?6 50771 .329 234.9 50.90 -348 235.8 50.55 1912.48 146.3 26.34 A and B have a small common proper motion. The measures of the faint star (1880-1912) show that this is not all in declination as would appear from the meridian positions. Measures of AC 07038 in I28?5 Auwers 0.034 in 192.8 Boss 0.031 in 194.0 8781. 46 Draconis. H VI. 37. (5.1... 10.7) R. A. 18" 40 18' Decl. + 55 25' 1910.203 i5975 I46"95 .206 160.10 146.32 225 I59-83 146.34 1907.33 235.4 50.72 1909.170 23i?07 50^74 .266 231.25 50.64 .304 230.50 50.89 .342 230.28 50.79 1909.27 230.78 50.76 The measures of C are continued for improving the proper motion of A. The change in AC is principally in angle. Stumpe 27303 in 3254 Porter 2.286 in 324.5 Kustner 2.289 in 325.4 Krueger 2.299 > n 325.6 The principal star is given a parallax of about 0^3. 8810. 22391- (6. 2... 9.0) R. A. 18" 42 14' Decl. 6 8* 1907.523 332?3 37^94 540 332.5 37-90 .581 332-7 38.i8 1910.21 I59-89 146.54 The meridian observations show no certain proper motion in 46 Draconis; and the measures of the io.7m star give the same result: 1879.98 i6o?43 146776 2n BI. Auwers 0^041 in 295?7 Boss 0.023 in 344.9 Groombridge 0.026 in 342.9 8792. 2 2393. (7.3...io.o) R.A. \&4i m 6' Decl. + 38 u' A and C (n.o) 1910.225 300?03 179*02 .244 300.19 178.88 .260 299.03 I79-I3 1907.55 332-5 38.01 No change. There is a 13 -5m star near B, IO7?4:I276. 8822. 22397. (7. 2... 9. 5) R. A. 18" 42 m 39' Decl. + 31 16' 1907.542 266?6 3"98 8.520 267.7 3-94 8.537 267.7 4-25 1910.24 300.05 179.01 An earlier position is: 1880.58 29969 J787 18 2n Bl. If the measures are substantially correct, the Greenwich proper motion of A is in error, at least as to direction. Ac- cording to that, the distance of the small star should decrease something more than i" in the interval. Greenwich 0^038 in 277?5 1908.20 267.3 4-o6 No motion. 234 Burnham: Measures of Proper Motion Stars 8824. 22396. (7.7. ..ii. 2) R. A. 18" 42 49' Dec!. + 10 38' A and C (10.2) 1910.299 ii?6a i6o"i4 375 "-SO 160.34 395 ii.iS 159-54 8871. H 870. (9. 7... 10.6) R. A. 18" 45 54' Decl. + 10 12' A and B 1910.375 219^0 ii?3i .452 220. o 11.56 1910.41 219.5 H-43 C and D 1910.452 23?7 22"io 455 24.4 22.14 1910.36 11.42 160.01 A and D (10.5) 1910.299 47?95 176*44 375 47-53 176.56 395 47-42 176.54 1910.45 24.0 22.12 A and C 1910.452 248?93 6s"94 .455 248.95 65.95 1910.36 47.63 176.51 The prior measures give : AC 1891.71 I3?i8 I53"i6 2n Eng AD 1891.72 50.31 173.53 2n Eng. These measures give for the movement of the large star AC R. A. + 0^176 Decl. 0^409 AD 0.168 0.437 1910.45 248.94 65.94 The components of H 870 form a part of h 2020. 8894. O2(App.)i76. (7.0. ..7.1) R. A. 18" 48 m 27" Decl. + I 45' 1911.411 H523 o6''5i .414 115-03 96-51 .430 114.88 96.87 + 0.172 0.423 Therefore the proper motion of A is : 0*457 in 157^9 Of course this is substantially the same as that given in the General Catalogue from the measures of AB. Measures (AB) 0^463 in 164^8 Argelander 0.468 in 165.2 Stumpe 0.448 in 164.9 Porter 0.451 in 162.7 Paris 0.487 in 157.4 8827, HVI. 50. (6. 4... 12. 5) R. A. 18*43'" 15 s Decl. 6 3' A and B 1912.564 357?9 23? 19 58i 359-4 23.70 583 359-8 23.15 1911.42 US-OS 96.63 One of these nearly equal stars has a small proper motion. A third star should be connected. 8902. 22416. (8.0... 10. 2) R. A. 18" 49 m 15* Decl. + 51 11' A and B 1907.312 I57?8 17:34 .329 157-8 17-38 .348 157-8 17-40 1007.33 157-8 17-37 1909.186 I57?2 I7"29 227 157-5 17-42 .266 157.4 17-22 1912.57 359-0 23.35 A and C (8.0) 1912.564 I7o?58 ii3"54 .581 171-03 113-38 .583 170.88 113.62 1909.23 157.4 I7.3I The measures by 2, A and fj (1830-1909) give for the proper motion of A: o"o22 in 342?3 A and DM (51) 2446 1907.329 40^65 I25"4i .348 40.50 125.40 1912.57 170.83 113-51 Probably unchanged since 1879. No proper motion found for the bright star. 8863. H 1352. (7.2... 9.5) R. A. 18" 45 m 24" Decl. + 29 40' 1909.340 246?! 12^03 .342 246.2 12.06 .438 246.7 12.22 I907-34 40-57 125-40 1909.186 40?6o 125*39 .227 40.45 125.03 .266 40.78 123.17 1909.23 40.61 125.20 The relation of these stars in A. G. Harvard is: 1882 4o?9 I27"2 1909.37 246.3 12.10 The angle is certainly increasing. 235 Burnham: Measures of Proper Motion Stars 8906. o Draconis. 22420. (4. 6... 7. 6) R. A. 18" 49" 25' Decl. + 59 14' B and C (11.3) A and C (13.0) 1907.348 39?8 23749 7.465 40.2 23.68 8.520 39.1 23.69 1910.184 326^82 io6"oo .203 326-9S 106.52 .206 327.17 106.24 I907-78 39-7 23-62 The large star has no certain proper motion : 1910.20 326.98 106.25 The other measures are : 1880.37 3273 107^80 2n Bl. Noted by Ball as difficult to measure. The apparent change in distance does not agree with the proper motion of A, and further measures should be made. Measures (AB) o"oo9 in 84?! Auwers 0.080 in 77.0 Boss 0.086 in 74.5 Boss o7oo7 in 189?! 8926. P 1255. (5. 8... 12. 5) R. A. 18" 51"' 37' Decl. + 48 43' A and C (13.0) 1911.414 249?2 34^60 .433 249.9 34-68 .449 249.7 34-90 8916. 02525. (5. i... 10. 3) R. A. 18" 50 28' Decl. + 33 49' C and D (7.1... 10.7) 1910.184 284^57 192766 .206 284.20 192.76 .225 284.60 192.69 1911.43 249.6 34.73 For the proper motion of AB. Paris o"i73 in I9i?8 Boss 0.143 in 203.7 8929. H 5505. (10.5... 10. 5) R. A. i8 h 5i'"56 > Decl. + 9 33' 1910 493 144 i iS"()/i 1910.20 284.46 192.70 Many stars nearer to AB than this. No evidence of proper motion : 1880.00 284?92 I937i9 2n Bl. 10.512 143.6 18.80 10.531 143-4 18.80 10.545 144-2 19-04 11.356 143.9 19-02 The proper motion of the bright star (Bradley 2381) is small and doubtful: Auwers o7o75 in z66?9 Boss o.on in 308.8 8917. 2 2418 rej. (8.4. . .10.9) R. A. 18" 50 31' Decl. + 26 52' 1907.348 7?7 i67o2 .Til 8.0 i<; oo 1910.72 143.8 18.92 No other measures. 8932. 23130. (7.4... ii. i) R. A. 18" 52" 20' Decl. + 44 4' A and D (10.6) 1008.460 311^30 180797 .463 311.40 180.90 .479 311.23 181.29 425 7-4 iS-94 1908.47 3".3i 181.05 1907-37 77 15-08 No early measures. 8923. Ho 270. (5. 6... 14. 5) R. A. 18" 51" i" Decl. + 41 27' A and B 1907.465 3o6?o 8^31 8.520 306.7 8.48 The large star appears to have no sensible proper motion : 1880.58 3ii?6s 181726 2n Bl. 8940. n Aquilae. 22424. (5. 7... 9. 2) R. A. 18' 53 m 34* Decl. + 13 28* A and B 1911.411 268?9 16777 .430 268.6 16.85 .449 269.3 16.69 1907.99 306.3 8.39 1911.43 268.9 ""' -77 236 Burnham: Measures of Proper Motion Stars From six positions by 2, A, H2, Hu and ft on 21 n (1831- 1911) the corrected proper motion of n Aquilae is: o''li; in 20<\.$ There is no probability of any sensible motion in the small star. Auwers o"ii5 in igo2 Bossert o.m in 187.6 Paris 0.117 in 180.0 Boss 0.120 in 179.3 This will be shown by later measures of the third star: A and C (12.7) 1911.411 26i.g6 78^63 .430 262.68 78.79 .449 262.25 77-96 8977. 22440. (6. 5... 9.0) R. A. iS" 56 5' Decl. + 62 14' A and B 1908.441 I24?o I7"oi .463 123.3 17-16 .479 123.3 17.30 1908.46 123.5 i7-i6 A and C (10.6) 1908.441 6i?28 i6o"o3 .463 61.10 160.29 .479 61.43 160.42 1908.46 61.27 160.25 The only other position of the distant star is: 1880.86 6i?8o I59"78 3n Bl. AB seem to make a system of the 61 Cygni type. The proper motion of A from the measures of C, and from meridian positions is : Measures of C o''o57 in i6c)?3 Groombridge 0.057 m 165.0 The relative motion of B from the measures of AB by 2, A and fj (1832-1908) is: 0*007 in I26?o 8986. 22434. (7-9--. 8. 4) R. A. 18" s6 m 34" Decl. o 53' B and C (10.3) 1910.452 53?6 1^40 -490 53-7 1-24 1911.43 262.30 78.46 8943. 22427. (8. 5... 9-0) R. A. 18" 53 57 s Decl. + 38 4' A and B 1911.414 6i?68 49-'o9 .433 61.62 49.06 .449 61.40 49.18 1911.43 61.57 49." From the measures by 2, A, Sp and p 1 on 14 n (1828-1911) the apparent proper motion of A is : o''o63 in 222? 5 The measures of BC show that B has no proper motion. A and DM (38) 3373 1911.414 35o?5 I59"44 433 350.42 159-34 -449 350.72 159-50 1910.47 53.6 1.32 About 15' n of this is one of the planetary or stellar nebulae (Dreyer 6741). This is given in the DM as the 9. 5m star 1911.43 350.55 159-43 The last comparison star, 6.2m, is supposed to have no sensible proper motion : Boss o"oo3 in 113 8976. H 2849. (9. 2... 9. 4) R. A. 18" 56 3" Decl. 15 56' 1911.583 I42?5 I9"95 .602 144.0 20.23 .625 142.3 20.07 Nebula and star 12. 5m 1910.452 3274 33-67 -455 328.4 33-88 1910.45 327.9 33.77 Nebula and star 13.6 m 1910.452 268?4 i8'/3o .490 272.5 18.22 1910.47 270.4 18.26 About y 2 np ^ 2434 is DM (0) 3626 (7-4) which is the principal star of h 2025. This star has two small companions, and many more distant in the field. A and B (13.9) 1910.452 2?4 9^72 . 490 2.2 9 . 62 1911.60 142.9 20.08 Apparently unchanged. The 9m star, SD (15) 5192, is 28* p, and a similar pair : A and B (9.5. . .12.8) 1911.564 138?! I2!'32 -625 135.7 12.26 1910.47 2.3 9.67 A and C (13.0) 1910.452 304?5 23707 -455 305.0 23.37 1911.59 136.9 12.29 1910.45 304-7 23- 2 2 16 237 Burnham: Measures of Proper Motion Stars 8999. i6Lyrae. H 1362. (6.0. ..11.5) R. A. I8" 58 3' Decl. + 46 46' 1909.266 .304 .340 279^78 279.23 279.00 43:03 42.96 42.80 1009.30 279.34 42-93 The proper motion of 16 Lyrae from my measures (1879- 1909) is : Measures o7o77 in 164?! Groombridge 0.097 in 163.9 Boss 0.091 in 167.6 9000. 22441. (7-7... 9-3) R. A. 18" 58" 7' Decl. + 31 13' A and C (10.7) 96753 1908.444 .460 .479 I40?97 141.45 141-23 96.20 96.59 1908.46 141.22 96.44 If there is any proper motion in 2 2441, it is evidently very small: 1880.54 141*24 o6fio 2n Bl. 9015. 2 2445. R. A. 18" 59" 35' Decl. + 23 9' Lalande 35667 is 56" directly /> 2 2445, and has a distant com- panion measured by Glaisher in 1842 at Cambridge, and re- cently published. A and B (8.0... 10.8) 1910.184 ' 321 ?44 39745 .260 321.60 39.22 .280 321.85 39.12 321.63 39.26 1910.24 The early position is: 1842.67 32o?s 40745 2n Glaisher. The principal star probably has a small proper motion. 9020. Aquilae. 287. (3.0... 12.0) R.A. i8*59 m 54 < Decl. + 13 41' A and C(n.8) 76?43 158786 158.52 158.50 1909.340 .378 381 76.88 76.73 1909.37 76.68 158.63 Further measures are needed, as the first is on a single night : I879-34 76?9 15676s in Meridian values of the proper motion of Aquilae are : Auwers orog6 in I96?7 Newcomb o.ioo in 186.6 Boss 0.102 in 184.9 9043. 22455- (7-2... 8. 3) R. A. 19" i 47' Decl. + 21 59' A and C (12.0) I9II.28O .299 .334 22?25 22.02 22.19 92765 91.98 92-74 I9II.3O 22.15 92.46 It is very probable that the change in AB is wholly due to the proper motion of the larger star, but as the companion is 8.3m, it might have a small movement of its own. To test this, a faint star is connected. Measures of AB 07064 in 185^5 A. G. Berlin 0.073 in 214.8 9046. 22458. (8. 5... 9.0) R. A. 19" 2 m 4' Decl. + 27 34' A and B 1911.280 227?2 n72i .299 .356 226.7 228.3 "-SO 11.41 1911.31 227.4 11.37 A and DM (27) 3248 (8.6) 1911.280 63?03 7o766 299 63.38 69.97 .356 62.67 69.95 1911.31 63.03 From meridian positions : 1875 63?8 7if8 70.19 A. G. Camb. 9049. 22459. (8. 4... 9.1) R. A. 19" 2 28' Decl. + 25 47' 1911.184 -280 334 232?9 233.4 233-4 13769 13-77 13-74 1911.27 No change in 80 years. 233.2 13.73 9053. i? Lyrae. (s.3...n.o) R. A. I9*2 m ss' Decl. + 32 19' A small star of about the eleventh magnitude, in the field with 17 Lyrae, has a remarkable proper motion, perhaps the 238 . Burnham: Measures of Proper Motion Stars largest known in any star as faint as this. My later measures A and E of this are as follows : 1906 .906 n6?s 150793 A and C 6 .904 116.6 150.77 1905.717 5-720 66?4 66.4 127737 127-73 7.258 116.9 7.271 116.7 150.86 150.85 5.736 66.5 127.66 1908 .460 n6?47 150788 1906.906 6.964 7.258 66.1 66.1 66.1 129-53 129.46 130.01 .479 116.66 .482 116.50 .518 116.20 150.91 151.19 150.65 7.271 66.2 130.14 1910 .299 116.52 150.52 7.291 ' 66.3 130.38 .356 116.65 150.44 375 "6.33 150.58 1908.444 65-45 132.12 395 n6.35 151.40 .460 65-53 131-92 479 65.69 131.79 AandF .482 65.54 132.17 1906.906 356?7 167754 .518 65-30 132.05 6 .964 356.8 167.47 7 .271 357-2 167.71 1910.260 65.08 I34.I7, 299 65-35 134.76 The following are the mean results of these and other 337 65-I5 134-16 measures : .356 65.20 I34.70 A and D 395 64.98 134.82 1887.73 2g6?40 124734 2n Eng 1911.241 .260 .280 65.03 64.88 65.28 135.70 135-63 135-39 1894.85 1905.72 1907.14 296.00 125.32 295.70 126.12 295.56 126.40 2n in 5n Eng P P 334 65.10 135-85 A and E 1912.236 255 .274 .296 64.88 64.45 64.55 64.55 137.56 136.77 137-54 137-80 1887.81 1894-85 1905.72 1907.10 ii6?oo 152765 116.37 152.20 116.50 150.75 116.67 150.85 in in 5n Eng Eng P P A and F For other measures of this remarkable star see Monthly 1887.73 357?77 168720 2n Eng Notices 71, 208. 1894.85 357.50 i68.ii 2n Eng The following are the mean results of all the measures of 1007.05 356.90 167.57 3n P 72?02 102728 in Eng 69.23 112.31 2n Eng 66.40 127-59 3n P 66.16 129.90 5n P 65.50 132.01 5n P 65.15 134-52 5n P 65.06 I35-64 4n P 64.61 137-42 4n P AC: 1887.81 1894.85 1905.72 1907.14 1908.47 1910.33 1911.28 1912.26 These positions give for the most probable apparent annual motion of C: 17542 in 45 ?9 The proper motion of 17 Lyrae, with which the moving star was first compared, is given from meridian positions as follows : Auwers o:'ii2 in 68?s Newcomb 0.121 in 74.8 Boss 0.121 in 83.8 A more accurate value of this movement can be found from the measures of the other distant stars which it is certain have no sensible proper motion. The recent P measures are: A and D 1906.906 2955 126751 6.964 295.6 126.51 7-258 295-7 126.03 7.271 295-3 126.32 7.291 295-7 126.61 These measures give for the proper motion of 17 Lyrae: AD R. A. + 071263 Decl. + 070342 AE 0.1260 0.0224 AF 0.1307 0.0402 Mean 0.1277 0.0323 Therefore the corrected proper motion is : 07132 in 75?8 Applying this to the apparent movement of C, we have for the real proper motion of that star: 17658 in 48^2 For the purpose of obtaining a new and independent value of the proper motion of C, I have connected it with several other stars too faint to have any sensible movement, and these measures were repeated after an interval of two years. The recent measures of these and other stars in the field are as follows : C and E 1908.444 i7328 I2276o .460 172.93 122.51 479 173-43 122.70 537 173.42 122.61 1910.260 174.18 124.06 .299 174-53 124.23 .337 174.27 124.40 .356 174-48 124.56 375 174-70 124.30 239 Burnham: Measures of Proper Motion Stars C and G (11.3) Cc 1908.49 52.33 63.16 311 1908.444 ii9?8o 130^78 1910.32 52.14 59.92 4n .460 119.80 130.44 EG 1908.47 60.30 113.66 5n 479 I2O.OI 130.67 1910.34 60.24 H3-74 4" .482 119.89 130.97 AE 1908.48 116.46 150.91 4n -5i8 H9-54 130.63 1910.36 116.62 150.74 4n 1910.260 120.75 129-55 As would be expected, there is no change in EG, and none in .299 121.25 130.22 AE except that due to the motion of A. From the four stars 337 121.07 129.79 connected with C we have for the proper motion of that star: 356 375 121.35 121.40 129.82 129.64 CE R. A. + 1:255 Decl. + 1-070 CG 1.340 1.318 C and H(i2.i) CH 1.265 1-162 1908.460 29? 10 163707 Cc 1.470 i. ooo 479 29.10 163.02 1-333 I-I37 .482 .518 29.30 29-15 163.21 163.00 Therefore the annual proper motion of C is : l?752 in 49? 5 1910.260 28.58 160.02 .299 28.92 159-96 The agreement with the former result from the measures of 337 28.50 160.27 AC is all that could be expected when it is considered that the 375 28.83 159-93 time interval is less than two years. 395 28.45 160.12 C and c (13.6) 9093. Schj 19. (8.6... 9.0) 1908.479 52?03 63-23 .482 52.07 63.14 R. A. 19" 5 m 57' Decl. + o 43' .518 52.88 63.11 1909.531 257?63 50?49 1910.260 52-50 60. 10 .534 257.80 50.37 .279 337 51.55 52.03 60.07 60.08 1909.53 257.71 50.43 397 52.50 59-44 Hind's nebula about 15' distant np is large and diffused, with no definite point for measurement; might be a cluster of very E and G faint stars. 1910.444 6o?32 "3"37 .460 60.20 113-59 479 60.45 113-64 9094. Z 2477 rej. (8. 5... 10. 5) .482 60.47 "3-77 R. A. 19" 6" o' Decl. 4 40' .518 60.05 113.91 1910.260 337 375 60.23 60.30 60.43 "3-37 114.02 113.66 1911.548 455 27^59 .564 45.2 27.46 .567 45-8 27.80 395 59.98 113.91 1911.56 45.5 27.62 A and E Further measures are needed to confirm the apparent change 1908.460 I50T88 shown by the single measure of Mitchel in 1848. 479 116.66 150.91 .482 .518 116.50 116.20 151-19 150.65 9116. P 139- (6. 7... 8.0) 1910.299 116.52 150.52 R. A. 19* 7" 12' Decl. + 16 39' 356 116.65 150-44 AB and C (7.5) 375 "6-33 150.58 _ Hf , 1911.334 205.70 114.00 395 "6.35 151-40 .356 285.30 114-56 The mean results of the two sets of measures of the small 373 285.53 114.73 stars around C arc : 1911.35 285.51 114.65 CE 1908.48 I73?26 122^60 4n From five positions on I4n by A, Fr, A and P (1874-1911) 1910.32 174.43 124.31 sn the apparent motion of C is: CG 1908.47 119.81 130.70 5n 0^234 in iso?7 1910.32 121. 16 129.80 5n Therefore if the meridian value is correct, AB has no CH 1908.48 29.16 163.07 4n sensible motion. To test this, I have connected faint stars with 1910.33 28.81 160.06 5n each. 240 Burnham: Measures of Proper Motion Stars AB and a (13.0) I9II.334 I02?6 2&".00 .411 104.3 27-50 .414 102.7 27.51 1911.39 I9II-334 3S6 373 103.2 C and D (9.7) 26l?02 260.77 260.75 27.67 125.01 124.74 125.28 I9II-35 260.85 125.01 The proper motions are given by Auwers : A o"o3O in 270^0 B 0.223 in 148.5 9118. 21 Aquilae. H 879. (5. 3. ..12. 3) R. A. 19" 7 39" Decl. + 2 5' 1912.526 545 .562 286?35 287.03 287.55 36.21 36.36 286.98 36.32 1912.54 The proper motion of 21 Aquilae, if any, is small and un- rtain from the meridian positions : Auwers o"oi8 in 3o6?3 Newcomb 0.003 in 327.2 Boss 0.007 in 206.6 The only other measures of B are my own. These measures, continued for the proper time, will give the real movement of the large star. 9123. 22483. (7. 2... 8. 3) R. A. 19" 7 44* Decl. + 30 9' A and B 1907.523 3i8?4 9"67 7.S42 8.249 317.6 317.5 9.96 9-93 1907.77 317-8 A and C (8.5) 1907.523 7.542 8.249 236.5 236.5 9-85 71-45 70.69 1907.77 236.5 No material change in either. 70.99 9135. H 1377. (7.0... 12. 9) R. A. 19" 8 m 51* Decl. + 47 10' 1912.411 .427 430 356?2 356-8 357-3 36.03 36.03 1912.42 356.8 36.19 The prior measures are too recent to show whether or not the small proper motion given in the General Catalogue belongs to the companion. 9137. Cygni6. 22486. (6.0... 6. 5) R. A. I9 h 9 m o* Decl. + 49 37' A and C (12.7) 1910.436 6?6o ss"9i .452 7.00 55.82 .471 7.40 55.83 1910.45 7.00 A and D (10.8) 1910.436 84?75 .452 84.67 .471 84.87 473 84.65 55.85 172.59 173.07 173.41 173-45 1910.46 84.73 173.13 For the proper motion of AB. The stars AB appear to make a system of the 61 Cygni class. An earlier measure of AD is : 1881.52 78?3i 170^69 37n Bl. From the two measures of this star we have for the proper motion of A : o'.'67i in 344?3 As the first position is the mean of a large number of measures, the resulting movement, with a thirty-year interval, should have the highest degree of accuracy. Other values from meridian observations are : Porter o"6s8 in 341 ?9 Paris 0.602 in 342.0 Groombridge 0.644 in 344-6 Boss 0.654 in 343.1 This star is frequently erroneously called 6 Cygni, which is No. 9374 of the General Catalogue. 9144. TI Lyrae. 22487. (4.0. ..8.1) R. A. 19" 9 40' Decl. + 38 56' A and C (10.6) 1909.340 342 .378 151-32 151.28 161.59 161.28 Bl. 1909.35 151-26 161.47 The only other measure is : 1880.00 151^78 i6i"o9 in No sensible change in AB. If the large star has any proper motion at all, it is wholly uncertain. Auwers o"o2O in 299?7 Groombridge 0.006 in 108.9 Boss 0.003 in 270.0 9149. 02(A PP .) I7 8. (5. 5... 7-5) R. A. 19" 9 m 52' Decl. + 14 53' 1911-583 .602 .622 267 ?20 267.75 267.60 89"9i 89.75 89.60 1911.60 267.52 89.75 No change since 1875, and the stars have a common proper motion if any. Boss 0.020 in 171 ?7 241 Burnham: Measures of Proper Motion Stars 9157. 02 3 68. (7-3... 8.5) R. A. 19" io m 37' Decl. + 15 57' AB and C 1907.542 ioo?7 i6?88 578 .638 99.6 101.7 16.78 16.77 1907-59 100.7 No apparent change since 1878. 16.81 9166. i Vulpeculae. H 2862. (4.8...II.8) R.A. I9 b ii m 3' Decl. + 21 11' 1911-583 .602 .644 12.78 12.57 39-25 39. IS 1911.61 12.71 39.13 The measures ( 1901-191 1) imply a motion of about o"ois, and about the same in R. A. as in Decl., but further measures are needed for a definite value of the motion. Auwers oToi2 in 26s?4 Boss 0.004 in 270.0 9171. 02370. (7- 5... 8.2) R. A. 19" i i m 19' Decl. + 9 8' 1907.542 .581 597 14.1 14.9 I9"7S 19.62 19-45 1907-57 M.4 19-61 No change since 1846. A small star, Ao 78?! : Bo I28?o. 9184. H 2863. (6. 2... ii. 7) R. A. 19" 12 10' Decl. 15 44' 1909-534 .627 .666 i774 17-74 17-03 48T63 48.65 48.42 1909.61 17.50 48.57 A continuation of the measures, commenced in 1900, will give a more exact value of the proper motion of A. Some of the values from meridian positions are : Stumpe o?293 in 2O47 Porter 0.274 in 205.0 Boss 0.285 in 201.1 Paris 0.317 in 197.0 9185. Cygni 9. 22496. (7.0... 10. 8) R. A. 19" I2 m 10' Decl. + 49 52' A and C (10.7) 1909.266 342 38i 242 IO 241.95 242.20 185.60 185.81 I909.33 242.08 185.58 The prior measures are discordant in distance. 1881.31 242?42 i86"o4 in 1881.78 242.36 185.15 in Bl Bl. For the proper motion of the principal star (Groombriclge 2802) we have: Groombridge o"oi7 in 249?9 9186. Lyrae. Sh 292. (4. 5... 8. 8) R. A. 19* I2 m 12' Decl. + 37 55' A and B 1908.463 70?92 99^9 .479 71.10 99.48 518 70.83 99.83 1908.49 70.95 A and C (11.5) 1908.463 I27?90 479 127.97 .518 127.35 99-77 100.71 100.99 100.45 1908.49 127.74 The only other measures of C are : 1879.76 I27?02 99^18 1880.25 127.62 99.91 100.72 in in Bl Bl. The proper motion of 6 Lyrae is small and uncertain : Auwers o"oi2 in 299?4 Boss o.on in 254.3 Newcomb 0.019 in 289.5 The measures of C should be continued. 9189. 23 Aquilae. 22492. (5. 5. ..9. 5) R. A. 19" I2 m 26' Decl. + o 52' A and C (13.7) 12". 36 12.56 1911.411 .468 .471 6i?8 60.9 60.5 11.99 i9".4S 61.1 12.30 The only other measures of the faint star are my own in 1905. The proper motion of 23 Aquilae is uncertain. Auwers o"o33 in 3I2?5 Boss 0.015 in H-3 242 Burnham: Measures of Proper Motion Stars 9192. p 1256. A and C (13.0) IOI2 526 lO? ^'? R. A. 19" i2 m 36' Decl. + 6 7' . OC IQt;. 27 .562 105.35 excessively faint. 1912.54 105.32 h 2037 and star (15.8. . .13.0) I909-534 709 48"8i B and C 1912.526 58?i7 .592 72-2 48.89 545 58.43 1909.56 71.5 48.85 . 562 58.48 ,, T . . _, IQI2 ^4. ^8 ^6 1891-57 733 49"36 2n 0. 9195. 24 Aguilae. 2 40, App. I. (6.O.. .6.2) R. A. 19" 12 40' Decl. + o 8' A and a (12.1) 1911.411 :6o?20 49'.'28 .430 160.58 49.88 .468 160.10 49.42 The faint star makes a nearly equilateral triangle with A and B. The proper motion of 28 Aquilae is not certain : Auwers 0*029 in 3io?8 Boss 0.018 in 355.3 9210. 225007V/. (8.0... 10. 5) R. A. 19" 14 II s Decl. + 19 30' 1911.44 160.29 49.53 Band 6 (n.o) 1911.411 32?46 59^62 1911.280 24?! 2o'.'oi 11.302 23.7 20.30 11-334 23.3 19.91 12.296 23.2 20.16 .430 302.15 59-83 .468 302.23 60.02 1911.55 23.6 20.09 1911.44 302.28 59.82 If the larger star has any proper motion, it is wholly un- certain from meridian positions : Auwers o"o6l in 287?! Boss 0.009 in 341.6 No other measures of the faint stars. 9204. 2249 4 rn 196.9 Boss 0.658 in 196.5 9304. H 1395. (8.8... 8. 8) There is a 14 m star about the same distance as B from A, 735:257o. 9317. 01286. (8. 3... 9.0) R.A. I9 h 2i m 39 s Decl. + 35 41' A and B 1907.523 K>4?7 67i6 7.542 105.7 6.51 8.370 103.6 6.19 8.482 102.9 6.12 R. A. 19" 20"' 52' Decl. + 36 53' 1907.542 66? i 2771 8.444 65.1 2.67 8.520 64.4 2.70 1907.98 104.2 6.24 1909-534 I02?2 6:'so .570 102.5 6.12 .589 101.8 6.27 1908.17 65.2 2.69 Probably fixed. 1909.56 102.2 6.30 B and C (12.5) 1908.482 i 4 5?6 o7o8 .520 141.4 0.90 9308. 22521. (5. 5.. .10. 3) R. A. 19" 2i m 14' Decl. + 19 39' A and B 1908.444 3797 24790 .460 37.87 24.95 1908.50 143.5 0.94 A and D (u.o) 1908.518 38?7 37753 520 38.3 37-32 537 38.5 37.92 .479 38.67 24.98 1908.52 38.5 ' 37.59 1908.46 38.17 24.94 A and C (9.5) 1908.444 322?40 70714 .460 322.53 70.37 B and D 1908.518 28? 9 35751 .520 28.6 35.16 537 29.5 35.72 .479 322.60 70.06 1908.52 29.0 35.46 1908.46 322.51 70.19 A and D (9.5) 1908.444 63?83 I49"72 .460 64.03 149.51 .479 64.10 I49-S9 Further measures are needed to determine the true relation of the three components of the triple. There is proper motion in A or B of about o7i8. (See General Catalogue Part II.) The measures of D should be continued. 1908.46 63.99 149.61 The proper motion of the principal star (Bradley 2462) as given from meridian observations seems to be certainly wrong in amount and direction : Auwers o7o75 in 237^8 A. G. Ber. 0.074 m 223.3 Boss 0.057 > n r 97-4 9320. Ho 449. (9.0. ..12. 3) R. A. 19" 21 41 " Decl. + 27 8' 1907.348 I778 I3"69 351 179-0 13-68 .463 179.9 13-87 1908) give for this motion : 0^041 in I78?4 1907.38 178.9 13.75 Measures discordant, and change doubtful. 245 Burnham: Measures of Proper Motion Stars 9335. H 887. (7.0... 13. 2) R. A. 19" 22 m 54' Decl. 7 17' 1912.408 430 465 3477 347-7 349-6 3S"H 35-34 34.91 1912.43 348-3 35-13 The large star is supposed to have a small proper motion. Radcliffe 0^054 in 303^9 The other measures are too recent to give an independent value. The observations should be continued. 9355. 2 2532. (6.0... 10. 2) R. A. 19" 24"' 9' Decl. + 2 39' A and B 4 15 34''i3 1911.430 .487 .529 4-40 4.08 33-90 33.71 1911.48 4.21 33.91 The four positions by 2, A and fl, each on 3n (1829-1911) give the proper motion of A : o"oi4 in 23 ?9 There is a 13. 5 m star nearer A, and making an equilateral triangle with AB, Ao 7o?7: Bo I34?3- B and C 1911.529 No proper motion found in meridian lists ; and not given in Boss' General Catalogue. 9357. H 888. (9.6... 10.4) R.A.i92 4 nl i3 < Decl. + 9 2' 1911.414 -433 .468 230.4 10.27 1911.44 No other measures. 230.8 10.30 9358. Ho 578. (7.0... 12.0) R. A. 19" 24 28' Decl. 6 45' 1911.526 .529 545 lo6?4 105.4 105-3 23-55 23-54 I9II-53 105-7 23.62 From the four positions by Ho, Doo and 3 on 12 n (1894- 1911) the proper motion of the principal star is: o7i66 in 249?4 From meridian observations : Porter o"i88 in 233?: Bossert 0.220 in 251.4 Paris 0.149 in 224.2 9360. H 889.(8.s...ii.2) R. A. 19" 24 m 29' Decl. + 9 3' 1911.414 433 .468 ioo?4 99-4 99.3 25.28 25.53 99-7 25.45 1911.44 No other measures. H 889 and h 2043 1911.43 AR. A. + 82:7 A Decl. 215^5 There is a faint pair involved in h 2043, referred to by Herschel; magnitudes, 11.2 and 12.2: 1911.414 .468 231.7 16.42 1911.44 231.2 16.20 9399. O2 374 n?/. (7. 2... 10. 7) R. A. 19" 27 51" Decl. + 49 57' 1907.542 8.370 8.444 2o6?8 296.5 296.9 i8"62 18.77 18.77 1908.12 296.7 18.72 No certain change. The proper motion of the large star is given in Groombridge: o'.'o39 in 98?8 9401. 22540. (7. 5... 9.0) R. A. 19" 28 3' Decl. + 20 9 A and C (12.8) 1912.296 22O?88 i47"3 .351 220.83 .353 221.23 147-00 146.89 220.98 147.06 1912.33 No other measures of C. The relative motion in AB is small and uncertain. The proper motion of A is given: A. G. Berlin o"o57 in 357?2 9404. u. Aquilae. P 653. (4. 8... 13.0) R. A. 19" 28 14' Decl. + 7 8' A and B 1908.460 28o"o3 29^34 .482 280.40 279.92 29.20 29.14 1908.49 28o.I2 A and C (13.0) 1908.460 292^35 .482 292.00 .518 291.00 29.23 28':86 29.32 29.02 1908.49 291.78 29.07 246 Burnham: Measures of Proper Motion Stars A and D (n.o) 1908.460 34575 6 3-'o6 .482 345-57 63.04 .518 345-48 62.91 B and C (u.i) 1912.526 284^6 4"30 .545 284.0 4.02 .562 283.2 4.07 1908.49 345.60 63.00 A and E (9.4) 1908.460 ;o?3 179*43 .482 70.30 179-74 .518 70.35 179-51 1912.54 283.9 4-13 The only other measures of AB are my own. No evidence of change in BC. 1908.49 70-32 I79.56 From the measures of the several companion stars, we have the following for the movement of A : AB R. A. + o"25o Decl. o? 1 10 AC 0.227 0.166 AD 0.238 -o.lli 9457. H 892. (9.0... ii. 4) R. A. 19" 31" so 5 Decl. 8 35' 1907.523 is?3 23^42 559 iS-i 23.53 .578 15-3 23.42 AE 0.244 0.167 I907.55 15-2 23.46 + 0.240 0.138 Therefore the true proper motion of n Aquilae is : o"277 in ii9?9 From meridian positions we have : Auwers o!'233 in 124^7 Boss 0.261 in 125.5 Newcomb 0.261 in 124.3 9438. Espin 129. (9. 4... 10.3) The principal star is only yellowish. No other measures. 9458. sSagittae. (5. 6... 7. 9) R. A. 19" 31"' 5i' Decl. + i6i2' A and B 1912.430 8i?43 89^93 .465 81.08 89.92 .485 81.01 89.92 R. A. 19" 30 18" Decl. + 52 33' A and B 1908.266 22i?5 3"29 .331 224.9 3.26 .370 226.3 3-52 1912.46 81.17 89.92 From the measures of AB by OS, A and ft (1840-1912) the apparent motion of A is : ol'o22 in 78?4 The star catalogues make this uncertain : 1908.32 224.2 3.36 A and DM (52) 2458 1908.266 273? 15 7i"77 .331 273.22 71.86 .370 273.52 71.86 Auwers o"oi3 in 297^5 Newcomb 0.017 m 75-4 Boss 0.019 in 47-9 It is probable that B is practically fixed ; to make certain of this, I have connected a third small star. 1908.32 273.30 71.83 There is an error of i in the declination given by Espin, and repeated in Part I of the General Catalogue. It should be 1912.430 28o?20 ioo"o6 .465 280.31 99.28 487 279.55 99-00 + 5 2 33'- The principal star is DM (52) 2459. 9447. Lalande 37162. (7. 5. ..10.3) R. A. I9 h 3i m 8" Decl. 10 15' A and B 1912.526 28s?oo 82^10 .545 286.03 82.28 .562 286.62 82.13 1912.46 280.02 99-45 9461. 02 (App.) 187. (7. 2... 7-7) R. A. 19* 31" 55' Decl. + 46 10' A and B 1911.509 287?25 64^20 .526 287.08 64.10 .529 286.85 64.47 1912.54 286.18 82.17 1911.52 287.06 64.26 247 Burnham: Measures of Proper Motion Stars A and C (7.6) 1911.509 255?o7 128797 .526 254.75 128.63 529 255.00 129.12 9493. 11893. (9- 2... 9. 4) R. A. 19" 33 m 46' Decl. + 9 56' I907.3SI I92?7 7"65 .463 192.4 7.80 -485 192.7 7.83 1911.52 254.94 128.91 At least two of these three nearly equal stars have some proper motion. Faint stars should be connected with the brighter ones. 9470. H 1423. (6. 5... II. 2) R. A. 19" 32 22' Decl. + 29 5' 1912.296 I28?2 20781 .351 128.8 20.58 353 127-8 20.89 1907.43 192.6 7.76 Distance larger in the measures of 1894. The apparent change should be confirmed by later measures. 9495. II 1427. (10.5... 10. 7) R. A. 19" 33'" 51' Decl. + 46 2' 1911.509 290?3 9755 .526 287.1 8.53 .529 285.3 8.41 1912.33 128.3 20.76 The only prior measure is my own in 1900. The place of this star is correctly given in Part I of the General Catalogue, but wrongly called 9 Cygni. It is DM (29) 3670. 9 Cygni, about 2 20' preceding H 1423, has a small and uncertain proper motion : Auwers o7o2i in is8?5 Boss 0.025 ' n 43-4 9485. 6 Cygni. f} 1131. (5.0... 14. 3) R. A. 19" 33 13' Decl. + 49 56' A and C (n.o) 1909.266 i82?9 44758 .342 182.6 44-8o .381 182.5 44.85 1911.52 287.6 8.83 About 15' / II 1427 is h 2044 which Herschel describes as a "fine cluster of perhaps 100 stars." No other measures of H 1427. 9504. 45 Aquilae. H 2888. (5. 8... 13. 7) R. A. 19" 34 m 33' Decl. o 54' I9I2.54S 3539 42712 562 355.0 42.16 564 353-7 41-81 1912.55 354.2 42.03 The measures of the faint star are too recent to give a reliable value for the proper motion of 45 Aquilae. The meridian positions leave this very uncertain : Auwers o7oi4 in 328?o Boss 0.023 in 64.5 9522. 2 2561 rej. (7. 9... 10. 6) R. A. 19" 35' 57* Decl. + 26 51' I9I0.395 3098 17751 .436 309.8 17.24 .452 310.6 17.33 1909.33 182.7 44.74 From the measures of C (1852-1905) I have shown that the motion of 9 Cygni is : 07272 in 355?3 Other values of the proper motion are: Auwers 07244 in 35i?8 Paris 0.241 in 354.5 Newcomb 0.252 in 354.9 Boss 0.249 in 353.5 9486. a Aquilae. H 2886. (5. 2... 12.0) R. A. 19" 33 13* Decl. + 5 7' 1912.430 327?93 47"28 .465 328.16 48.12 .487 327.33 48.34 1910.43 310.1 17.36 The earliest measure of this is on a single night. One of Marth's nebulae is about 15' distant tip. Nebula and DM (27) 3459 (9.1) 1910.436 3i3?8 141781 452 313.4 141-41 1910.44 313.6 141.61 This has been previously measured. 1890.66 3i3?o I4i"50 2n Kobold. The nebula might be a group of very faint stars. The nucleus, or faint star, has a small companion, 152 : 3", and a 13 m star more distant. Nebula (nucleus) and star 13 in 1910.436 35i?o 25758 1912.46 327.81 47.91 The only other measure is that given in the General Cata- logue. The proper motion, if any, la very uncertain. The measures of the faint star should be continued. Auwers 07027 in 27875 Newcomb 0.004 ln 180.0 Boss o.ooi in 270.0 248 Burnham: Measures of Proper Motion Stars This appears to have been measured from some other part of the nebula: 1890.76 340?s 6"73 in Kobold. 9531. X Aquilae. O2 380. (7.0. . .7.2) R. A. 19" 36 55" Decl. + ii33' AB and C (13.0) 1912.430 48^53 8i'.'4i .465 47-98 81.63 .487 48.27 81.92 9601. Da 13. (7. 2... 11. 4) R. A. 19" 40 58' Decl. + 44 38' A and C (10.7) 1909.340 289^58 153^45 .342 289.55 I53-07 .381 289.70 153.56 1909.35 289.61 I53-36 Near 8 Cygni. The other measures are: 1877.85 289^75 153^39 in Bl 1879.37 289.82 152.39 in Bl. 9607. 22578. (6. 6... 7. 4) R. A. 19" 41 15" Decl. + 35 48' A and C (12.0) 1908.463 357-53 45'-45 479 3S7-6o 45.42 .482 357.87 45.61 1912.46 48.29 81.65 For the proper motion of the close pair. This does not appear from the meridian positions : Auwers o"o3i in 3O2?7 Boss 0.013 in 180.0 9560. 16 Cygni. 2 46, App. I. (5 . i . . -5 3> R. A. 19" 38 m 38' Decl. + 50 15' 1909.438 I349 38"52 455 134-95 38.16 .458 134.78 38-51 1908.47 357-67 45-49 The only other measures are those given in the Genera Catalogue by Glasenapp. A and D (9.5) 1908.463 251^28 143-35 479 251.20 143-35 .482 251.30 143.26 1909.45 134-88 38.40 The large stars have nearly the same proper motion, and make a system of the 61 Cygni class. A Auwers o"228 in 229^2 Paris 0.263 in 228.8 Porter 0.222 in 227.9 B Auwers 0.199 in 220.2 A. G. Harv. 0.161 in 228.5 h 2050 and star 9.5 m 1909.458 I94?o8 96"! i .476 194-09 95-65 .493 194.18 96.31 1908.47 251.26 I43-32 Of this we have: 1880.10 25i?32 142^85 2n Bl The apparent change in the distances of both stars require, confirmation. There is a 14 m star near C, 75?o : n76. 9617. i? Cygni. 22580. (5. i. ..8. i) R. A. 19* 41 52' Decl. + 33 27' A and C (9.0) 1908.266 I3955 I4i"4i .288 139-88 141-47 331 139-63 141.20 1909.48 194-12 96.02 This is 2 m 55* directly following 16 Cygni. The prior meas- ures are: 1876.90 i94?5 97"9 2n Wn 1887.79 I95-I 96.8 in Eng 1891.75 194.2 96.16 2n 9582. 02384. (7.0... 7. 3) R. A. 19" 39 32' Decl. + 38 2' A and C (9.4) 1909.496 297?o s8"94 .512 297.5 59-31 .515 296.9 59.46 1908.29 139-69 141-36 A and B make ^ 2580, and appear to form a system of th 61 Cygni type. There are many stars in the field. We hav the following measures of AC: 1852.71 I4548 i6i?68 3n O2 1859.63 144-93 159-01 in O2 1883.48 142.75 150.11 in H2 1887.81 142.08 148.81 2n Eng 1908.29 139-69 141-36 3" P From these positions the proper motion of 17 Cygni is : o"456 in I79?7 1909.51 297.1 59.24 The only other measure is : 1856.83 208?! 58:50 in Se. 249 Burnham: Measures of Proper Motion Stars From meridian observations : Auwers 0*435 in i8i?7 Porter 0.438 in 180.7 Boss 0.452 in 178.6 9626. H 1439. (7. 4... 9.1) R. A. 19' 42 23' Decl. + 55 33' 1907.312 aoo?5 32761 .329 200.1 32.70 9689. 02389. (6. 9... 13) R. A. 19* 46'" 58' Decl. + 30 50' A and B 1906.906 3075 9"89 6.964 307.6 10.00 7.312 307.4 9.81 1907-06 307.5 9.90 A and C (8.8) 1907.271 i84?5 12762 .312 184.2 12.53 1907.32 200.3 32-65 No early measures. 9652. A. 0.238. (9. i... 9. 2) R. A. 19" 44 m 25' Decl. + 6 55' 1007.463 273?o 5?6s .482 274.6 5.86 .485 273.8 5-67 1907.29 184.3 12.57 The nearest companion, 13 m, was added by Espin in 1906. No change in AC. 9691. H 1447. (7. 9... 10. 9) R. A. 19" 47 9- Decl. + 33 46' A and B 1907-312 3339 i81'39 465 333-8 18.29 .482 334.6 18.22 1907.48 273.8 5.73 The position-angle of 1894 is too large. 9677. 19 Cygni. H 603. (6.o...io.o) R. A. 19* 46 19' Decl. + 38 25' A and B 1907.312 I03?97 54701 .329 104.47 54.48 .331 104.27 53-91 1907.42 334.1 18.30 A and C (11.3) 1907.312 86?2 22^05 465 85.4 22.31 .482 85.7 22.16 1907.42 85.8 22.17 No early measures. 9716. H 1449. (9.0... 12. 2) R. A. 19" 48 39" Decl. + 32 44' 1910.263 280?! 7763 .473 282.8 7.29 .490 282.6 7.28 1907.32 104.24 54.13 B and C(ii.7) 1907.312 II?7 2I?42 .329 ii. i 21.50 1907.32 11.4 21.46 From a mean of my two sets of measures, and a mean of the two positions by Engelhardt, the proper motion of the principal star is : Measures of B 07103 in I7O?7 Auwers 0.112 in 3.6 Bossert o.no in 6.1 Boss 0.098 in 6.2 The measures of C do not show any motion in B, but later observations will make this certain. 9683. A. 0.240. (8.8... 8.8) R. A. 19" 46 35' Decl. + 47 30' 1907.444 256?s 14^50 .465 256.0 14.52 1910.41 281.8 7.40 Two other similar pairs in the field, /j 2052 is 2 50* pre- ceding H 1449. 9724. ftAquilae. 02532. (3. 8. ..11.3) R. A. 19' 49 25' Decl. + 6 6' A and C (to.o) 1907.711 348?oo i667oo .714 347-7 166.20 .731 348.03 166.53 1907.72 347.91 166.24 The prior measure is : 1879.38 347i3 I5i"89 31 P' I907-45 256.2 14.51 250 Burnham: Measures of Proper Motion Stars These measures give for the proper motion of (5 Aquilae: o"si2 in 176?! From some of the star catalogues we have : Auwers o"474 in I77?8 Bossert 0.470 in 178.2 Newcomb 0.482 in 175.7 Boss 0.484 in 175.9 The relative motion in AB is very slow. 9756. 22602. (8. 5... 9. 2) R. A. 19' 49 m 34* Decl. 13 40' 1908.537 559 573 148.7 148.4 12.30 12.38 1008.56 148.5 12.32 Struve's place of 2 2602 in Pos. Med. belongs to another star 2' 40' /, SD (13) 5537, while 2 2602 is No. 5522. The place in Part I of the General Catalogue should be as given here. It is a coincidence worth mentioning that the star given in Pos. Med. is a pair very much like the other except in magni- tudes : A and B (9.0.. .13.0) 1908.537 is6?5 14^72 573 158.0 14.77 575 158.5 14-87 1908.56 No other measures. 157-7 14.79 A and SD (13) 5536 1908.520 I92?23 131^64 537 192.40 131.89 559 192.47 131-42 1908.54 192.37 131-65 It is evident that neither of these stars has any proper motion : 1864.77 I02?os I3i"26 in A. 9765. q Cygni. 22605. (5-0... 7-5) R. A. 19" 52 32' Decl. + 52 7' A and C (13.8) 1908.425 444 .460 55?6 54-o 54-3 i8?6s 19. ii 18.76 1908.44 54.6 18.84 This faint companion has not been previously seen. A and D (10.4) 1908.422 .425 -444 61.30 61.30 165.21 165.64 1908.43 6i.33 165.36 Of the distant star we have: 1880.14 6i?5o I63V20 2n Bl The two positions give for the apparent motion of A : 0^078 in 229?o Further measures are required to improve the value pre- viously given. Auwers o"osg in 233^8 Boss 0.051 in 232.6 9775. OSsgirej. (7. 5... 10. 2) R. A. 19" 52 58" Decl. + 43 56' 1909.342 .381 5i6 52-0 17:88 17.69 1909-36 51.8 17.78 No change since 1866. In Part I of the General Catalogue for DM (43) 3425 read 3422; and R. A. should be 22' less. 9856. Ho 118. (9.I...II.O) R. A. 19" 58'" 7' Decl. + 33 20' 1909.458 476 29-5 29-5 2771 2-51 1909.47 29-5 2.61 h 2062 is about 15' distant sp; faint and small, but bisection fairly certain. h 2062 and star 12. 5m 1909-458 52?! 36^63 .476 49.4 36.20 1909.47 50.7 36.41 h 2062 and star io.3m 1909.458 240^5 40^56 .476 . 238.5 40.60 1909.47 239-5 40.58 In his observations of nebulae, Engelhardt has compared these stars by differences of R. A. and Decl., and therefore the apparent change is not to be taken as real. 1887.78 54?2 39^3 in Eng (II) 1887.78 240.5 42.6 in Eng (II) 9863. 22622. (8.0... 8. 7) R. A. 19" 58 42' Decl. + 16 40' A and C (10.5) 1908.520 308?! I7?i8 537 559 308.8 308.9 16.95 17-35 1908.54 No certain change. 308.6 17.16 251 Burnham: Measures of Proper Motion Stars 9882. H 1471. (5. 9... ii. 5) R. A. 19" 59 54' Decl. + 3iS3' 1907.312 6?2 y>".u 329 6.9 30.36 -463 6.5 30.30 1907-37 6-5 30.26 No early measures. The proper motion, if any, is very small : Boss o"oi2 in i86?i 9903. H 1479. (7.7...IO.O) R. A. 20" o m 47' Decl. + 25" 15' 1911.583 .644 .663 2?2 2.2 2.2 33"3 33.58 33-95 1911.61 2.2 33-79 No early measures. 9905. H 1477. (8.0... 10. 6) R. A. 20" o 55' Decl. + 12 20' 1911-583 .602 .625 271.2 270.5 19791 20.23 19-99 1911.60 270.7 20.04 The only other measures are of recent date. 9911. H 904. (8.8... 10.4) R. A. 20' i 14' Decl. + 10 14' 1907-523 -578 .581 3i79 317.7 318.2 27".6o 27-33 27-35 1907.56 No other measures. 3I7.9 27-43 9935. ^ 2640. (6.0. . .9.9) R. A. 20" 3" 14' Decl. + 63 33' A and C (10.8) I909-455 8i?3i 153'' 16 .493 81.20 153.52 .496 81.20 81.17 153.65 1909.48 81.23 153-44 The proper motion of A is evidently very small and un- certain : 1880.80 81^28 i 53"4 3n Bl. From meridian positions : Boss Greenwich in 0.052 in 15.7 9944. 22642. (8. 7... 8. 7) R. A. 20" 3 m 57' Decl. +63 21' AB and C (12.4) 1912.296 38?55 90794 351 39.13 00.97 353 39.51 90.98 1912.33 39-06 90.96 No other measures of C. The close pair appears to be a system of the 61 Cygni type. The proper motion is given in the General Catalogue: Stumpe o"247 in 51?$ Porter 0.256 in 50.4 9949. 22634. (8.0... 9.5) R. A. 20" 4 m 6' Decl. + 16 27' A and B 1911.356 I3?6 s"48 392 395 13-8 14.2 5.67 5-51 1911.38 13.9 A and C (12.9) 1911.356 3i3?9O 392 3I3.50 395 313.70 5-55 76.17 76.32 1911.38 76.44 313.70 C for proper motion of AB. This is given from meridian positions : A. G. Ber. o"i84 in 357?3 The Harvard stellar nebula, Dreyer 6879, is about 15' dis- stant nf. It has a diameter of 3"7, and resembles a star of 10.7 magnitude out of focus. Nebula and star (10.7.. .10.7) 1911.39.2 22i?74 84^63 .395 221.90 84.98 1911.39 221.82 84.80 9950. 22635. (7-0... 10. 5) R. A. 20" 4 m 19" Decl. + 8 6' A and C (12.8) I9".545 4305 7i"67 .548 .564 42.90 42.97 71.61 71-65 I9II-55 42.97 71.64 No other measures of C. A and B have a common proper motion : Glasgow o'.'i79 in 2ii?5 Paris 0.220 in 199.7 Porter 0.210 in 208.3 252 Burnham: Measures of Proper Motion Stars 9965. H 2936. (8. 8... 9. i) R. A. 20" 5 19 s Decl. + 58 47' I908.S7S 252^0 12^53 .633 252.1 12.60 .636 252.0 12.73 1911.411 82?76 64 ''43 .433 82.48 64.61 .449 82.60 64.34 1911.43 82.61 64.46 B and C (ii.o) 1908.594 65^90 25^73 .597 66.88 25.45 .613 66.15 25.69 1908.61 252.0 12.62 No other measures. 9997. Espin 132. (8. 8... 9.0) R. A. 20" 7 m 12' Decl. + 56 36' A and B 1907.638 82?4 5"4S 8.252 83.5 5-79 8.370 81.3 5-S-i 1908.60 66.31 25.62 1911.433 66?82 25^26 .449 66.17 25.35 .471 66.63 25.39 1911.45 66.54 25-33 The brightness of B seems to have been greatly over-esti- mated in 1901. I have connected with it a faint star. These are all the measures of BC. We have for the proper motion of A: Measures o"272 in 34O?4 Radcliffe 0.262 in 336.7 Paris 0.268 in 327.9 Porter 0.220 in 332.4 The measures of AB should be continued. 10009. 2 2646. (7.0... 8. 8) R.A.2o"8 ra i' Decl. 6 25' A and B 1909.666 46^8 2IT66 .703 46.6 21.78 .706 46.8 21.54 1908.09 82.4 5.58 A and C (8.6) 1907.638 6o?5 37"70 8.252 59.9 37-79 8.370 60.6 37.53 1908.09 60.3 37.67 B and C 1907.638 57 32"50 8.252 56.4 32.65 8.370 57-0 32.49 1908.09 56.8 32.55 The only other measures are given in Part I of the General Catalogue. 10005. 22649. (7. 7--. 8.8) R. A. 20" 7 m 34' Decl. + 31" 43' A and C (10.3) 1910.608 283?97 129^27 .627 284.10 129.21 .660 284.15 128.97 1909.69 46.7 21.66 From the five positions by 'S, A, HI and P (1829-1909), the proper motion of A is : o"o44 in 8i?5 Although it is practically certain that B is fixed, I have measured a third star. B and C (12.0) 1909.666 io6?i 26^42 .703 107.1 26.58 .706 106.0 26.42 1910.63 284.07 129.15 Presumably the proper motion of about o"o3 is in A. This will appear from later measures of C. 10007. Lalande 38760. (7.1... 9. 6) R. A. 20" 7 49" Decl. i "14' A and B 1907.523 82?! 63^9 1 .562 81.9 64.84 .578 81.7 64.28 1909.69 106.4 26.47 10022. 22655- (7- 5-.- 7-5) R.A.2o"8 ln 5o' Decl. + 21 52' A and DM (21) 4110(9. 2) 1910.529 I52?6o 59"i8 .548 152.90 59-10 551 153-00 59-68 I907-55 81.9 64.34 1908.575 82?28 64"92 .594 82.18 64.68 -597 82.58 64.57 .613 82.30 64.54 1910.54 152.83 59-32 The only other measure of this is by South : 1825.65 I50?2 57"32 3" S As he calls it very difficult, and the distances differ i"4, there is probably no change. 1908.59 82.33 64-68 17 253 Burnham: Measures of Proper Motion Stars 10033. 3 Capricorni. P 294. (5. 7... 14.0) R. A. 20* 9 44' Decl. 12 42' A and B 1912.678 34?6 26*94 34-o 36.1 .695 .698 26.98 26.89 1912.69 34.9 26.94 From the three positions by A and P (1891-1912) the proper motion of 3 Capricorni is : 0*030 in II7?7 Further measures of the faint star will reduce the error in the value given. The meridian positions make the components of the movement very uncertain: Auwers 0*020 in 275^6 Boss 0.015 in 169.0 10040. P 983. (6. i... 10.2) R. A. 20" io m ii' Decl. + 25 14' A and C (12.0) 1912.581 83!20 115*24 .583 .619 83.17 82.83 115.87 116.35 1912.59 83.07 115.82 For the proper motion of the close pair. No other measures. The only proper motion found for the large star in the star catalogues is : Boss 0*003 in 233?6 10044. 22658. (7.0... 9. i) R. A. 20' io m 29" Decl. + 52 45' A and B 1911.449 .471 .487 "5?4 116.9 114-8 5*77 5.36 5-65 1911.47 115.7 A and C (10.2) 1911.449 209? 38 471 .487 210.00 209.80 5-59 46*08 46.10 46.25 I9H.47 209.73 46.14 From the measures of AC on 15 n by 2, A, Hu and P (1832- 1911) the proper motion of A is: 0*187 in 13.B The apparent motion of A from the' measures of AB on 20 n by 2, A, HI, Hu and P (1831-1911) is: 0*013 in 2I3?8 Therefore the real motion of B is : 0*175 in I2?3 A system of the 61 Cygni type. Some of the determinations of the proper motion of A from meridian positions are : Groombridge Porter A. G. Harv. Bossert o"i75 in 0.152 in 0.169 m 0.166 in i6?6 8.2 l 5- 15.8 10048. H 2944. (8.4...II.8) R. A. 20" io m 39' Decl. +60 i' I9H-37S 392 395 191:2 190.5 190.9 25-25 25-57 25.21 1911.39 No other measures. 190.9 25-34 10054. a' Capricorni. H 607. (4. 5... 9.0) R. A. 20" i i m o' Decl. 12 53' A and C 1911.468 221 ?35 45*01 471 509 .529 220.90 222.03 221.05 45.18 44.72 44.99 1911.49 221.78 44.97 Comparing this with my measures in 1879, we have for the proper motion of a' Capricorni: 0*025 in 74?5 Some of the values from meridian positions are: Auwers 0*014 in 328?4 Newcomb (Stand.) 0.005 in 48.7 Newcomb (F. C.) 0.014 > n 69.1 Boss 0.016 in 67.7 The measures of both companions should be continued. 10057. a 1 Capricorni. R. A. 20" i i ra 24" Decl. 12 55' A and D (10.7) 1909.512 I56?92 SIS 531 I56.97 156.83 155 16 I54.76 1909-52 156.91 154.86 From this and the P measure of 1879, the proper motion of the large star is : 0*053 in 50?6 This from meridian positions is given: Auwers 0*040 in 71?! Boss 0.059 in 85.1 Newcomb 0.045 in 89.6 The measures of the faint star should be continued. 254 Burnham: Measures of Proper Motion Stars 10061. A. G. 251. (8.6...IO.O) R. A. 20" ii m 51' Decl. + 5 49' 1908.575 597 .633 i85?4 185.0 186.0 7:20 7-25 7.30 1908.60 185.5 7-25 No evidence of motion. The distance given in G. C. Part I is much too large. 10064. Ho 588. (6. 5... 8. 3) R. A. 20" I2 m 7 s Decl. + 31 8' A and B 1907.523 297?32 50^96- 597 .638 297.13 297.28 50.84 50.94 1907.59 297.24 50.91 B and C (12.0) 1907.523 I7?p 8?79 597 17-5 8.60 .638 15.2 8.74 1907.59 16.9 Early measures discordant. 8.71 10077. P 661. (5. 7... 12. 4) R. A. 20" I2 m 39" Decl. + 40 o' A and B 1912.583 64?g 12^85 .638 65-3 12.68 1912.61 65-1 12.76 There may be a little diminution in the angle since 1878. As the proper motion of the bright star is doubtful, I have con- nected a faint star. A and (13.3) 1912.583 2i8?o7 iii''42 .638 217.10 112.04 1912.61 217.58 "1-73 Auwers Boss Kustner o'/o68 in o8?5 0.012 in 169.2 0.022 in 113.5 10085. x Cephei. 22675. (4.0... 8.0) R. A. 20" 12 56" Decl. + 77 2 1' A and C (10.1) 1912.255 336?6o 169732 274 .206 336.63 336.55 169.48 169.41 1912.27 336.59 169.40 The small star appears to be DM (77) 763 (9.5). From the Astrographic Catalogue, using scale value of 3Oo"o, we have : 1895 336?3 170"! Greenwich The proper motion of v. Cephei is given : Auwers o"oi8 in 24^3 Newcomb 0.027 in 17.7 Boss 0.029 in 25.5 10100. 22666. (6. 5... 8. 7) R. A. 20" 13" 52' Decl. + 40 21' A and C (9.2) 1908.537 207?6 34"22 .556 208.0 34.30 559 208.0 206.8 34.44 Gla 1908.55 207.5 34-32 The distance by Tarrant is too small. 1894.59 207?4 34^27 2n The proper motion, if any, of the large star is small : Boss o"oi2 in 162^7 10104. \ Capricorni. (4. 9... 11.7) R. A. 20" 14 o" Decl. 13 8' 1908.537 573 575 594 210.25 209.80 210.18 53.90 54-24 54-22 53-6r 1908.57 1911.471 500 -529 210.07 209.63 53-99 54" 1 5 54-21 53.89 I9H-50 209.78 54.08 The four positions by (3 on ion (1877-1911) give for the proper motion of v Capricorni: 0*042 in 2i6?8 Further measures should be made, as the first of these is on a single night. The meridian positions leave the amount and direction of the movement uncertain : Auwers o!'o24 in 257?9 Boss 0.018 in 156.7 Newcomb 0.014 in 266.8 10133. Arg. 38. (9.8...io.o) R. A. 20" 15 25' Decl. 20 37' 1906.755 7-675 7-695 272?8 273.7 273.8 I7"30 17-45 17-43 1907.37 273.4 Probably without change. 17-39 255 Burnham: Measures of Proper Motion Stars 10135. 22671. (6.0... 7. 4) R. A. 20' is 27' Decl. + 55 i' A and C(i2.8) IQH-37S 54 10 84740 392 55.87 83.50 .395 54-90 83.73 10168. v Cygni. 665. (2. 2. ..io. 5) R. A. 20" i;" 1 55" Decl. + 39 52' A and EC 1911.414 ig6?i8 141^49 .430 196.38 141.48 .449 196.25 141-13 .471 196.18 141.20 I9".39 54.96 83.88 For the proper motion of AB. C has a very faint companion. C and D (14.1) I9II-395 I209 5"50 .414 114.6 5-27 .471 120.4 5.46 1911.44 196.25 I4I-33 From the four positions of the small star (1878-1911) we have for the proper motion of v Cygni: 07034 in 338?4 The proper motion given in Part II of the General Cata- logue belongs to another star. The several results derived from meridian observations are contradictory and uncertain. Auwers (F. C.) o7oi9 in 356^5 Auwers (cor'd) 0.008 in 321.0 Newcomb (Stand.) 0.022 in 108.4 Newcomb (F. C.) 0.004 in 80. i Boss 0.003 in 159-0 While it is practically certain that there is no motion in BC which would affect the value given, I have connected a very faint star: BC and D (12.8) 1911.449 I34?73 40776 .471 133.63 40.98 .487 133-85 40-99 1911.43 118.6 5.41 The proper motion of A is small : Groombridge o"o32 in 204?! Boss 0.021 in 199.0 10137. H2954- (9.5... 9-5) R. A. 20" is m 30' Decl. + 19 25' 1909.381 302?7 2748 .400 305-3 2.97 1909-39 304.0 2.72 About y 3 nf H 2954 is h 2075. The central star, from which the measures are made, is faint and difficult. This is Dreyer 6905. , h 2075 and star n.gm 1909.381 i62?9 36789 .400 164.0 36.83 1911.47 134.07 40.91 10171. H 1510. (8.5... 8.8) R. A. 20" i8 m 31" Decl. + 47 23' A and B 1908.573 I50?2 4:65 8.575 150.4 4-Si 8.594 M9-9 4-52 9-400 i|S.S 4.45 9.438 150.3 4.54 1909.39 163.4 36.86 h 2075 and star lo.om 1009.381 358?2 46777 400 359.0 46.16 1909.39 358.6 46.46 The last was measured at the Lick Observatory : 1891.60 3S7?6 46768 2n 10144. Ho 456. (8.0... 13.0) R. A. 20* i6 m 18' Decl. 27" 7' 1906.755 2io?4 14707 7.695 211.4 14.39 1908.92 !.)).<) 4.53 A and C (12.6) 1908.573 34i7 6770 8.575 342.2 6.53 8-594 343-0 6.46 9.400 340-6 6.37 1908.78 341.9 6.51 A and D (11.2) 1908.573 3233 3i732 575 322.3 31-24 .594 322.1 31-08 1907.22 210.9 14.23 Probably unchanged. 10162. H 1505. (8. 3... 10. 9) R. A. 20" 17" 10" Decl. + 43 12* 1907.463 iog?6 17^14 .465 109.9 16.87 .482 109.8 17.13 1908.58 322.6 31.21 H 1511 is in the field. H 1510 and H 1511 1909.400 121^05 57724 .438 120.90 57.37 1907.47 109.8 17.05 No early measures. 1909.42 uo.97 57.30 256 Burnham: Measures of Proper Motion Stars 10177. H 1511. (n. i. ..ii. 5) R. A. 20" 18'" 38' Decl. + 47 23' 1909.400 239?6 io"67 .438 241.0 10. 60 10183. Lewis 34. (10.4... 10. 6) R. A. 20" 19 Decl. + 42 45' 1908.537 I749 4"40 556 175-9 4-44 573 173-8 4-43 1909.42 240.3 10.63 No other measures. 10180. O2(App.)207. R. A. 20" 18 47' Decl. + 42 36' A and C (6. 5. ..7-7) 1908.537 63?33 94"02 SS6 63.32 04.00 573 63.43 93-73 1908.56 174.9 4-42 These stars, too faint to be in the DM, are about 6' n of the S./m star, DM (42) 3725. This does not agree with the description by Lewis in magnitudes, or distance which is given as i"55. As nothing else could be found in this vicinity, there must be a large error in the place, or in the measures. 10189. 22680. (8.3... 8. 5) R, A. 20" 19" 14' Decl. + 14 29' 1906.755 288?o isl'oo 7.465 288.2 16.11 7.482 288.0 16.17 1908.56 63.36 93.92 In G. C. Part II, p. 1082, in the proper motion of A, for i':o86 read o"o86. The four sets of measures of C now available (1876-1908) give for this motion : 0^083 in 53 ?6 From meridian positions : Kustner o"o6i in 56^2 While C is a bright star, there is no reason for supposing that it has any sensible proper motion. For greater certainty, I have measured the faint star D. C and D (l3-3) 1908.537 i62?24 57"5i .556 164.37 57-6o .573 163.80 57-20 1907.23 288.1 16.06 No relative motion. 10194. P 1134- (5-8... 12. 7) R. A. 20" I9 m 29" Decl. + 63 36' 1907.463 8o?o 4"23 8.482 80.0 4.09 8.520 80.6 4.34 1908.15 80.2 4.22 The only other measures are my own in 1889. I do not find any proper motion given the large star; not in Boss or Groombridge. 10196. 22681. (7. 3... 10. 8) R. A. 20" I9 m 35" Decl. + 53 2' A and B 1910.548 41 ?o 6?57 551 40-1 6.37 1908.56 163.47 57-44 10182. 22679- (7-4-.- 8- 7) R. A. 20" 18"' 59" Decl. + 19 11' A and B 1910.490 78? 55 22^94 .493 78.22 22.96 .509 77.63 22.72 I9I0.55 40-5 6.47 A and C (8.0) 1910.548 20i?8o 4o"20 .551 201.65 40-02 .570 201.70 40.40 1910.56 201.72 40.21 C and D (n.o) 1910.548 ioi?53 22^50 .551 101.98 22.53 .570 101.73 22.88 1910.50 78.13 22.87 A and C (10.1) 1910.490 152? 15 38"oo 493 152-38 38.71 .509 151.40 39-02 1910.56 101.75 22.64 It is evident from the measures of CD that D has no proper motion. The measures of AC by ^, A and P (1831-1910) give for the proper motion of AB : 0*029 in 119?! 1910.50 151.98 38.88 No other measures of C. About 40' /> is the interesting object, h 2075. This was measured at the Lick Observatory; central star not seen here. (Pub. L. O. II p. 166.) 257 Burnham: Measures of Proper Motion Stars 10199. H 1513. (8. 4... ii. 5) R. A. 20" I9 m 48' Decl. + 46 8' 1910.512 326?! 13*87 529 327-6 13-69 .548 326.3 13-97 10235. H 1516. (8.0... 10.7) R. A. 20" 22 26' Decl. + 54 1 7' 1907.329 148?! 4/''i7 .348 148.2 47.13 .463 147.7 46.96 1910.53 326.7 13.84 No other measures. 10216. S749. (7-0... 7-4) R. A. 20" 21" 14' Decl. 2 30' A and C 1908.441 3i6?52 43"S6 .479 316.43 43-55 .482 316.48 43.67 .518 316.02 43.73 1907.38 148.0 47.09 No other measures. A 12. 5 m star about the same distance in 204. A. G. Harvard gives the principal star a proper motion of 0*031 in 270. 10240. Ho 131. (7-8... 11. 2) R. A. 20" 22 m 49' Decl. + 18 23' A and C (10.7) 1007.329 8i?25 99*62 .348 81.39 99.41 .444 80.87 99.77 1908.48 3'6.36 43-63 C and D (10.6. . .10.7) 1908.441 240^25 77*35 .482 240.50 77-23 1907.37 81.17 99.60 1910.490 8o?78 98*66 .509 80.90 98.65 .529 80.80 98.37 .518 239.42 77.06 1910.51 80.83 98-56 1908.48 240.06 77.21 There is a 13.5 m star near C, I97?5= I9"8. 1912.504 8o?68 98" i i 507 79-93 97-93 545 80.87 98.54 A and D 1908.479 266?23 07"59 .482 266.33 97-44 .518 266.55 07.11 1912.52 80.49 98.19 My measures of this (1903-1910) give for the proper motion of A: 0*380 in 103?! 1908.49 266.37 97-38 D and ^(13.6) 1908.479 2i7 5"78 .482 21.5 5-78 .518 19.1 5-8o The measures should be continued for a final value. From meridian observations : A. G. Berlin 0*384 in iO9?3 1908.49 20.8 5.79 We have the following of two of these stars : AC 1891.79 3I4?02 44:87 2n Eng AD 1891.79 266.25 100.37 m Eng If the early measures had been made on a greater number of nights, the result of a comparison with the present meas- ures would be more accurate. 10264. p 363. (7-0... 11. o) R. A. 20" 24 28' Decl. + 20 12' A and B 1911.373 64?95 I7"49 .392 64.86 17.49 .395 64.60 17.70 AC R. A. 0*130 Decl. 0*024 AD 0.178 0.024 1911.39 64.80 17.56 0.154 0.024 Hence the most probable proper motion of A is : 07156 in 261?! A and C (11.7) I9II-373 20o?o8 45f62 .392 199-30 45-39 -395 199-45 4S-67 The meridian positions give: Porter 0*148 in 245*3 Boss 0.104 ' n 230.8 1911.39 I99-6I 45-56 The several measures of both companions should give the proper motion of the principal star with great accuracy. 258 Burnham: Measures of Proper Motion Stars From the six positions of B on 16 n by Doo and (5 (1878- 1911), and the four positions of C by fj on nn (1900 to 1911) we have : AB R. A. + o:'io6 Decl. + o':o8i AC 0.092 0.087 10315. a? Cygni. 8756. (5-O...9-7) R. A. 20" 27 36' Decl. + 48 49' 1912.675 32305 57"34 .678 323.02 57.38 + 0.099 +0.084 Therefore the proper motion of A is : o"i30 in 49?7 No motion found in the star catalogues. 10289. p 668. (6.2... 11.7) R. A. 20" 25-" 49' Decl. 10 16' A and C 1908.633 io8?23 ioo"os .636 198.40 ioo.li .652 198.00 100.54 .671 198.30 loo.oo 1912.67 323.03 57.36 There are three other stars within this distance from A. Comparing the recent measures of B with the single measure of OS in 1840 gives for the proper motion of the large star : Measures o"osi in 201 ?5 Auwers 0.042 in 160.9 Boss 0.037 in 164.7 10320. 2 2697 rej. (7. 5-.- 9-5) R. A. 20" 28'" 13' Decl. o 53' I9H.545 i7 30"32 -564 i-3 30.33 567 1.2 30-57 1908.65 198.23 100.18 1911.449 io8?6o ioo"72 .468 198.67 100.30 .545 198.70 100.54 1911-56 1-4 30.41 The apparent change in distance from the measure of 1848 is probably not real. 1911.49 198.66 100.52 These measures of the io.4m star are made in the interest of the large proper motion of AB. Bonn o''309 in 67^7 Auwers 0.309 in 72.1 Porter 0.305 in 66.2 Paris 0.234 in 61.4 Boss 0.316 in 73.1 10325. H 1535. (8.0... ii. 6) R. A. 20" 28 32' Decl. + 32 58' A and B 1008.537 2.47?4 i6rp2 573 246.3 16.77 .575 246.8 17.09 10298. to 2 Cygni. P 669. (5 . 5 ... 13 . 5) R. A. 20" 26 20' Decl. + 48 33' 1908.56 246.8 16.93 A and C (11.6) 1908.537 I53?2 i8':54 573 I54-I 18-62 575 154.2 18.65 A and B I909-570 341 4 i8fo7 592 339-8 17-87 .666 340.9 18.13 1908.56 153-8 18.60 The proper motion given A seems to be doubtful, at least in amount. The distance of B should have increased about l" since 1902. 1909.61 340.7 18.02 A and C (10.0) 1009.551 86?is 56^20 .570 86.62 56.54 573 86.35 56.22 Bakhuyzen o"i68 in 47?5 10335. DM (5) 4556. (8. 6... 10. 5) 1909.56 86.37 56-32 No change in AC, and probably none in AB as the first position depends on a single night. It is therefore probable that the large star has no sensible proper motion. The results R. A. 20" 29 ra 14" Decl. + 5 42' 1908.597 52^25 57':oo .633 51-83 57.99 .636 51.50 57.96 from meridian observations are contradictory : Groombridge o"o24 in 94^8 Auwers 0.042 in 160.8 Boss o.oio in 65.9 1908.62 51.86 57.95 Large proper motion. (See General Catalogue, Part II.) ofsos in I353 259 Burnham: Measures of Proper Motion Stars 10367. 71 Aquilae. 672. (6.0... 12. 5) R. A. 20' 32 8' Dec!. i 31' 1912.408 28i?2 31:85 .411 282.5 32.02 .465 283.8 31.00 10378. 2 2705. (7. i. ..8. i) R. A. 20' 32 57' Decl. + 32 57' A and C(ii.3) 1909.400 341 ?oo 182773 .458 341-28 183.46 1912.42 282.5 3L92 .493 341-15 183-39 If 71 Aquilae has any proper motion, it is very uncertain from the meridian observations : Auwers 0^005 in 257?5 Boss 0.028 in 154.4 Further measures of the faint star are necessary to deter- mine the real movement of the large star. 10372. T Capricorni. Hu 200. (5. 5... 6. 8) R. A. 20" 32 m 34' Decl. 15 22' AR nnH ("* ( 11 7^ 1909-45 34LI4 183.19 Apparently no proper motion : 1880.15 34i85 i82:'93 2n Bl No change in AB. 10383. Hn 39. (8.0... 10.8) R. A. 20" 33" 7* Decl. + 50 28' 1908.520 176^0 7762 -537 175-2 7-61 559 177-4 7-93 1912.507 272?27 158742 .564 272.53 158.22 .583 272.56 159.09 1908.54 176.2 7.72 No change since 1881. 1912.55 272.45 158.58 No other measures. The proper motion of the large star, if any, is very uncertain. Auwers o".O2i in 235?3 Newcomb 0.029 in 176.3 Boss 0.023 in 161.8 10386. i Aquarii. H 2984. (5-5---"-5) R. A. 20" 33 10" Decl. + o 4' A and B 1909-515 2i9?63 57796 .534 219.25 58.40 .570 219.35 58.19 10373. 48 Cygni. 2 53, App. I. (6.0... 6.1) R. A. 20' 32- 39' Decl. + 31 9' A and B 1909.54 219.41 58.18 A and C (11.4) 1009.515 36^65 70775 -534 37-24 70.89 -570 37-60 70.99 1911.200 vS-OS I 79-77 .302 175.64 179-74 334 I7S-54 I79.76 1909-54 37-i6 70.88 From the measures of these two small stars, we have for the 1911.31 I75.6I 179.76 The four positions by 2, A and fJ (1835-1911) give for the proper motion of i Aquarii: AB R, A. + o7oo8 Decl. + 0^026 AC 0.115 0.006 oTo37 in 225?8 The proper motions from meridian positions are discordant : A o7o57 in 238?5 Auwers 0.009 >" 188.1 Boss B 0.062 in 216.8 Auwers 0.069 in 228.2 Boss For determining hereafter the real motion of A, I have con- nected a very small star. A and a (12.7) 1911.280 l?6s 71733 .302 0.88 70.80 -334 '-47 7I-5I + 0.106 +0.016 Measures o7i07 in 8i?4 Auwers 0.078 in 105.0 Boss 0.094 in 99-2 10390. v. Delphini. 0X533. (4.7---"-3) R. A. 20" 33 m 19' Decl. + 9 40' 1908.671 3oo?6 17^50 .673 300.3 17-43 .689 301.6 17.46 .692 300.2 17.53 1911.31 1-33 7'-2i 1908.68 300.67 17.48 260 Burnham: Measures of Proper Motion Stars The proper motion of v. Delphini from the measures of the small star (1852-1904) is given in the General Catalogue: Measures of B o"3i2 in 8s?8 Auwers 0.298 in 86.5 Newcomb 0.314 in 87.0 Boss 0.315 in 87.8 10401. a Delphini. p 298. (3.9. ..) R. A. 20" 34 m 4' Decl. + 15 29' A and B (13.5) 1911.526 225?2 30^37 .545 223.8 29.98 .564 224.9 30.63 10402. 22708. (7.0... 8. 7) R. A. 20" 34 m 7' Decl. + 38 13' A and B 1909.512 328?47 29^65 1911.280 329^42 3o"33 334 329-00 30.23 373 329-28 30.05 I9II-33 329.23 30.20 From ten positions by 'Z, O2, A, Du, HI and ft on 31 n (1829- 1911) the proper motion of the principal star is: 0^256 in I36?4 A and D (10.3) 1909.458 217^85 H3".42 .493 217.90 , 113.62 .512 217.57 113.62 1911.54 224.6 30.33 A and C (12.0) 1911.526 279?55 43"78 545 279.50 43.67 .564 279.60 43.88 1909.49 217.77 "3-55 The only other measure is : 1880.08 214^17 H5"o7 2n Bl The proper motion of the principal star from the measures of D is therefore : From meridian positions : Porter 0^242 in I38?7 A and C (13. 5) 1911.334 I3?3 :6"70 373 14-0 17-13 395 13-5 16-79 1911.54 279.55 43-78 A and D (13.0) 1911.526 I5i35 47"H .545 151.68 47.54 .564 iSi-43 48.00 1911.54 I5I-49 47-56 A and E (12.7) 1911.526 308? 12 5i"32 545 307.70 51-77 .564 307-47 51-67 I9II-37 13 -'6 16.87 From the four measures of C, the proper motion of A is : o"295 in I3O?2 Of course this should be identical with the result from AB, but when the difficulty of the object, the short time covered by the measures, and the further fact that two of the positions are from a single night, are taken into account, the agreement is all that could be expected. 10426. 22717. (7. 2... 9. 7) R. A. 20" 35 19" Decl. + 60 20' A and C (9.7) 1908.633 52?83 4s:'oo .636 53-20 45.65 .652 52.83 45-67 1911.54 307-76 51-59 A and F (10.8) 1911.526 ii4?68 79"&4 545 "4-93 79-24 .564 H4-73 79-17 1911.54 114.78 79.42 From the measures (1877-1911) the annual motion of the large star is : AB R. A. + 0^065 Decl. + 0^043 AC 0.057 0.017 AD 0.033 0.006 AE 0.032 0.043 AF 0.053 0.024 + 0.048 +0.027 Therefore the corrected proper motion of a Delphini is : ol'oss in 6o?7 From transit observations : Auwers o"o46 in oo?o Newcomb 0.070 in 76.2 Boss 0.064 > n 97-2 1908.64 52.95 45.74 The only other measure of AC is that of 1898 given in the General Catalogue. 261 Burnham: Measures of Proper Motion Stars 10429. H 2987. (10.5 ...10.7) 10446. H 2990. (9. 6. ..12. i) R. A. 20" 35 33' Decl. + 19 36' R. A. 20* 36'" 48' Decl. 20 57' 1009-573 "56 10761 1907-675 3o8?9 19765 .589 116.5 10.63 695 309-7 19-45 1909.58 116.0 10.62 1907.68 309-3 19-55 No other measures. Other small stars near. This is SD (21) 5807 and not SD (20) as printed in the General Catalogue. No other measures. 10437. 49 Cygni. 2 2716. (6.0... 8. 2) 10447. 22718. (7. 4-- -7-6) R. A. 20" 36" ii 1 Decl. + 31 53' R. A. 20" 36 52' Decl. + 12 18' A and B A and C (12.0) 1908.671 86?5 8745 1912.351 9i83 68^63 .673 86.9 8.46 353 90.86 68.00 .689 86.1 8.95 ?Qs\ f\i nft 68.26 . joy yi.Lio 1908.68 86.5 8.62 1912.36 91.26 68.30 A and C (8.0) No other measures of the small star. The proper motion of 1908.671 34570 166799 49 Cygni is given : .689 345.38 167.07 Auwers o7oi8 in 154-5 .692 345-36 167.09 Boss 0.018 in 176.0 1908.68 345-48 167.05 No change in AC since 1889. 10441. Ho 595- (7-0 . .12.2) 10459. p 674- (8.0... 10. 8) R. A. 20" 36 33' Decl. + 22 33' R. A. 20* 37 53' Decl. 2 1 19' 1907.638 I09?6 17727 .675 in. 2 17.64 1907.788 I02?9 1748 -731 109-7 17.29 7.807 103.8 1.70 8C77 IO2 7 I "l : 96.73 This is about 50' sf 2 2738. 1886.67 io8?6 0^46 in Eng As this is derived from differences in R. A. and Decl., change is not to be inferred. 1912.41 118.7 36.17 266 Burnham: Measures of Proper Motion Stars 10642. Ho 598. (8.0... 12.0) R. A. 20" S3 m o' Decl. + 28 49' 1911.348 m?3 17^33 .564 112. 2 17.58 .583 112. i 16.98 10663. Lalande 40682. (6.0... 8. 8) R. A. 20" 54 58" Decl. + 18 52' 1912.675 33423 46"i8 -678 333-83 46-21 695 333-53 46-38 1911.56 in. 9 17.30 The measures are discordant in distance, and change is uncertain. 10643. eEquulic. 22737. (5. 7... 6. 2) R. A. 20" 53 m 5 s Decl. + 3 So' AB and D (12.8) 1912.465 278?63 77!'o8 .504 278.67 77.03 .507 278.73 77.20 1912.68 333-86 46.26 One of these stars, and presumably the larger, has some proper motion. The three sets of measures, on 8 n (1880- 1912), give for the movement of Lalande 40682 : o''os7 in i8i?7 The only value found from meridian positions is the follow- ing: Boss 0^075 in 2o6?9 10670. S9Cygni. 22743- (4-7..-9.0) RA 2o"^ m AA* Decl +47 V 1912.49 278.68 77.10 For the proper motion of AB. This is given: Auwers o"2O4 in 227?! Stumpe 0.202 in 227.7 A and C (11.5) 1912.427 I4i?o 26*42 .430 141.0 26.48 .465 140.8 26.88 10648. H 928. (9. 2... ii. 6) R. A. 20" 53 25' Decl. + 2 12' I906.75S 8i?5 14^57 6.813 82.9 14.95 7.578 81.4 15.19 1912.44 140.9 26.59 No change in AB. The measures of the small star must be continued for the proper motion of 59 Cygni. This is un- certain from the star catalogues : Auwers o"oi3 in 134^4 Boss 0.008 in 67.2 Newcomb 0.017 in 108.6 1907.05 81.9 14.90 The change shown by the Cincinnati measure of 1879 is probably explained by a large error in that distance. 10681. H 1605. (10.7... ii. 3) R. A. 20" 56 37' Decl. + 54 i' 1909.378 I20?5 20?00 10.490 119.7 20.60 10659. 22741. (6.0... 7. 3) R. A. 20" 54 39' Decl. + 50 o' 1909.93 120. i 20.75 H 1606 and H 1605 1909.378 2I9?3 2o8"76 10.490 219.3 208.82 and C (11. 0) 1909.493 3S637 139*52 .496 356.40 I39-40 512 356.53 139-49 1909.93 219.3 208.79 No other measures. (See No. 10687 for measures of H 1606.) 1909-50 356.43 139-47 The first measures are discordant in distance: 1879.98 356?62 140701 in Bl 1880.34 356.32 138.83 in Bl The large star has no certain proper motion from meridian positions : Groombridge o"on in 242?7 Boss 0.018 in 25.7 10685. 22744. (6. 3... 7-o) R. A. 20" 56 58' Decl. + i 4' AB and C (12.8) 1912.675 ioi?35 87^36 .678 102.52 87.78 .695 102.00 87.64 There is a faint star about 10" from C. 1912.68 101.96 87.59 267 Burnham: Measures of Proper Motion Stars For the proper motion of the close pair. The relative motion in the large stars is in the position-angle. For the movement of A we have : Stumpe oTi66 in 24S?8 Bossert 0.175 in 250.0 Paris 0.177 in 242.0 10687. H 1606. (9.0... 11. o) R. A. 20" 57 5' Decl. + 54 4' A and B 1009.342 i85 c o i8"6i .378 186.1 18.51 .458 186.2 18.33 This planetary nebula is about 20' sp Ho 462. The prior measures are: 1890.74 3435 96:38 3n p. 10719. O2(App.) 2 i4. (5. 7... 8.0) R. A. 20" 59 23' Decl. + 41 9' A and B 1911.334 l8s39 57"42 .373 185.12 57.17 .302 185.14 57.37 1911.36 185.22 57.32 B and C (12.2) I9IL373 241^68 107:28 .392 241.94 107.31 1909.39 186.0 18.48 H 1606 and h 2099 1909.378 336^48 54" i 5 .458 336.45 54-41 1911.38 241.81 107.30 As A and B appear to have a common proper motion, I have connected a faint star for an independent value of this move- ment. From meridian positions this is: Boss ol'osi in I77?5 Kustner 0.056 in 196.3 10725. 22754. (8.0... 8.7) R. A. 21" o 29' Decl. + 12 42' A and B 1909.589 30ii2 32:38 .592 301.30 32.20 .630 301.47 32.49 1909.42 336.46 54-28 The last measures connect the principal star of H 1606 with the principal star in h 2099, The greatest length of the nebula is about 89" in the direction of 25. 10695. H 1607. (8.0... 10. 5) R. A. 20" 57 m 36' Decl. + 6i i' A and B 1009.342 8s5 10^36 493 84.3 10.13 531 85.2 10.15 1009.46 85.0 10.21 There is a decided motion in angle and distance from the proper motion of A. This from the measures (1873-1909) is: 0:062 in 233 ?9 For verification a third star is connected. A and C (11.3) 1909.342 333?65 84:67 493 333-17 84.97 531 333-70 85.05 1909.60 301.30 32.36 As the components do not differ greatly in magnitude, the proper motion may be in either. The apparent motion of A is : 0:031 in 329? o To determine this, I have connected a third small star. A and C (n.8) 1009.589 225? 12 149:99 .592 225.50 149.51 .630 225.10 150.14 1909.46 333-51 84-90 10703. Ho 462. (7-8... 8.8) R. A. 20" 58" 27' Decl. 1 1 34' 1909.458 2is?6 2?59 .493 216.7 2-50 .512 215.2 2.44 1009.60 225.24 149.88 10727. p 157. (6.7... 10.7) R. A. 2io3i > Decl. 14 24' A and C (12.0) 1908.504 67?o 10:05 .636 66.1 9-76 .671 67.3 10. 16 .673 67.1 10.03 1909.49 215.8 2.51 No change. h 2098 and star 13 m 1909.458 343 06:80 493 343-8 95.49 5 343-2 96-85 1908.64 66.9 10.00 From the measures of C to 1904 the proper motion of A is: 0^364 in 94?3 1909-49 343-3 96.38 268 Burnham: Measures of Proper Motion Stars From the star catalogues : Porter o''339 in go'o Paris 0.328 in 90.0 Radcliffe 0.308 in 97.5 Hedrick 0.440 in 90.1 10737. 22755. (6.7... 10.3) R. A.2i" i 24' Decl. o 39' 1906.755 7.482 7.523 82?2 82.2 82.6 24.17 24.22 24.04 1907.25 No change since 1827. 82.3 24.14 10743. p 158. (7. 3... ii. 8) R. A. 21" i m 37" Decl. + 47 19' 1909-534 570 313.7 313-3 10.78 1909.55 313-5 10.62 In the following measures of the double nebula in the field (Dreyer 7026), the central point was taken for comparison with the stars. Nebula and star io.5m I909.534 64?! 26"8s .570 64.0 26.58 1909.55 64.0 The earlier measures are: 1879.57 6 3 ?8 2 S :'2 26.71 1891.69 66.8 26.2 Nebula and star 13. 2m 1009.534 3i55 in in P Eng 570 3I5.6 48.79 I909.55 315.5 48-85 Nebula and star 13. 4m I909.534 323i 53"o8 570 322.2 53.13 1909.55 322.6 53.10 From differences in R. A. and Decl. : 1891.69 3i99 5i"9 m Eng This is presumably the brighter of the two stars. 10747. P68o. (8. i... 8. 6) R. A. 21" i m 52" Decl. + 53 n' AB and C (10.7) 1908.597 334 22^75 .636 .652 33-2 33-1 22.85 22.78 1908.63 33.2 22.79 Distance may be decreasing. No material change in the close pair. 18 269 10775. 22763. (8.5... 9.7) R.A.2i b 3 m 52" Decl. + 16 52' 1907.559 -578 .581 2937 293-0 293-0 17.06 17.30 1907.57 293.2 17.19 Measures discordant, and relative motion uncertain. 10782. Y Equulei. P 71- (4-7...H.O) R.A.2i B 4 m 3o" Decl. + 9 39' A and C (10.0) 1912.408 s?7o 46^21 .4" 5-57 46.11 .427 6.23 46.30 1912.41 5-83 46.21 From the four positions of AC by P and Doo (1888-1912), each on 3 n, we have for the proper motion of y Equulei: o"i54 in 141 ?9 Further measures should be made for a final value. From meridian observations : Auwers 0^170 in 169^0 Paris 0.177 in 162.0 Newcomb 0.179 in 162.2 Boss 0.170 in 161.7 10794. 22765. (7. 8... 8.0) R. A. 21" 5 m 8" Decl. + 9 4' A and (13.5) 1909.589 163^42 41767 .592 163.13 41.41 .630 163.30 41-85 1909.60 163.28 41.64 For the proper motion of AB. No other measures. A and B have a small common proper motion. This is given in A. G. Berlin : A o"o22 in 297?2 B 0.033 in 287.4 10796. 22770. (7.0. ..10.5) R.A.2i"5 m 2i > Decl. 3 37' 1910.678 .681 .684 2 4 6? 9 246.4 245.8 7 50 7.66 7.78 1910.68 No motion since 1828. 246.4 7.65 Burnham: Measures of Proper Motion Stars 10803. 22773. (8. 2... 9.0) R. A. 21" 5 50" Decl. + 43 30' A and C (12.8) 1909.592 .666 703 639 64.2 63.1 21 767 22.00 21.67 1909.65 63.7 21.78 The only other measures of C are my own, given in the General Catalogue. A and nebula 1909.592 I 4 88 49^40 .666 151.3 50.26 .703 150.0 49.42 1009.65 150.0 49.69 This small nebula was found by me at the Lick Observatory in June, 1889, and has not been published. There is a faint star near it, 56: n". 10804. H 1621. (8. 6... ii. 3) R. A. 21" 6 i 1 Decl. + 54 33' 1907.559 578 .675 148.2 148.7 19.58 19.89 1907.60 No other measures. 148.3 19.76 10808. p 159- (6. i... 9. 2) R. A.2i"6 ra 2i" Decl. + 47 12' A and C(6.g) 1911.334 i8997 373 375 189.26 189.43 134.72 134.29 1911.36 189.55 I34-55 A and a (13.0) 1911.373 I477 I4"52 .392 146.7 14.69 .471 146.9 14.40 1911.41 147-1 14.54 No change in the large stars. No proper motion found in the catalogues. 10811. H 1622. R. A. 21* 6 39- Decl. + 54 42' A and B (13.5) 1907.578 H7?6 8742 .675 115.6 8.02 1907.63 116.6 8.22 This is a nearer companion, not previously seen. A and C (9-5- -H-4) 1907.559 294?9 I3?io 578 295.7 .675 295.5 13-03 12.80 1907.60 295.4 No other measures of AC. 12.08 10827. 2 2775. R.A.2i"8 m 3o' Decl. i 20' There is no wide pair here like that measured at Cincinnati and referred to in Part II of the General Catalogue. There is a pair of small stars in the field sj> ~Z 2775, but it has a dif- ferent angle and distance. a and b (9.7.. .10.0) 1911.509 124^6 74 ( :o6 a and ~Z 2775 (A) 1911.509 2OO?2 l68"34 10832. 22780. (6. 2... 7. 2) R.A.2i"8 m 45' Decl. + 59 30' A and C(8.s) 1009.342 2ii?55 120^89 .400 211.65 .458 211.35 120.77 121. l6 1909.40 211.52 120.94 C is DM (59) 2333. For comparison we have: 1874 1878.16 2II?7 211.54 120.33 211 A. G. ITcls. Bl. The large star has no certain proper motion so far as meridian positions are concerned, and this is confirmed by the measures of C. Auwcrs 0^017 in 241?! Groombridge 0.013 ' n 288.0 Boss 0.005 in 231.7 10834. ^ 2776. (7. 7... 9.0) R. A.2i"8 ra 55" Decl. 10 51' A and B 1912.810 .813 .867 52.18 51.98 84*40 84.21 83.78 1912.83 51.98 84.13 No change in BC. The larger star certainly has a small proper motion. The measures by 2, A and P, covering a period of eighty years, give this movement : o"oi9 in 354?o 270 Burnham: Measures of Proper Motion Stars 10835. 2 2779. (8.5.. R. A. 2i h 9 m 16' Decl. + A and B 1908.594 i8o?43 .597 180.88 .633 1/9-97 -8-5) 28 35' 17". 1 1 17.18 17.10 I have previously given in the General Catalogue the proper motion of T Cygni from the measures of the distant star, D (1851-1883). O2 0^474 in I7?S From the single measure of C by HI, and the three p positions, on ion (1876-1911), we have the proper motion of T Cygni: Measures of AC 0^474 in 22?2 Measures of AD 0.475 in 17-8 Some of the results from meridian observations are: Auwers o"46i in 19?! Newcomb 0.465 in 21.2 Boss 0.455 in 20.3 10847. H 1628. (9. 4... 9. 6) R. A. 21" io ra 14' Decl. + 32 6' 1907.581 252?o I5"i3 7-636 253.2 15.30 8.520 253.4 I5-30 1908.61 180.43 17-13 As it is uncertain which of the Struve components is moving, I have connected a third small star. A and C (12.0) 1908.594 66?os 58^30 597 66.75 58.19 -633 66.37 58.38 1908.61 66.39 The relative motion in AB is : o"o47 in 59 ( 180 10838. 22778. (8.4.. R. A. 2i h 9 m 28 s Decl. A and B 1907.463 273?8 .482 274.4 .523 274.1 58.29 *) 10.6) -l44' I9"70 19.72 19.64 1907.91 252.9 15.24 No change since the measures of Dembowski in 1873. 10862. H 1631. (7.2...II.O) R. A. 21" i i m 15' Decl. + 50 47' I9II-373 J 6?8s 49^21 375 i6.43 48.89 .392 17.20 49-02 1907.49 274.1 1909.760 274?! .780 273.8 19.69 i9"S9 I9-SS 1911.38 16.83 49.04 No early measures. 10866. H 279. (II.O...TI.O) R. A.2i"ii m 50 s Decl. + 11 49' A and B 1910.395 293^0 5*34 .397 293.9 5-30 1909.77 273.9 A and C (n.o) 1909.780 260^63 .782 260.92 .802 260.87 19-57 7 1 "74 72.22 71.82 1909.79 260.81 71.93 Third star measured for the proper motion of A. From the measures of AB this is : o'.'o37 in 2ii?5 10846. T Cygni. (4. 9... 7- 4) R. A. 21" 10 o" Decl. + 37 32' A and C (13.3) 1911.471 230^3 28"oi .487 229.6 28.17 .526 230.9 28.16 1910.40 293.4 5-3 2 A and DM (11) 4531 (8.8) 1910.395 294^15 I24"59 .397 294.10 124.94 1910.40 294.12 124.76 No other measures. 10880. p 163. (7. i... 9.0) R. A. 21" I2 m 47' Decl. + n 4' AB and C (13.6) 1908.556 242^07 28^94 .573 242.00 28.92 1911.49 230.3 A and D 1908.520 2io?66 .556 210.67 559 210.57 28.11 i62:'6o 162.83 162.44 1908.54 210.63 162.62 1908.56 242.03 28.93 271 Burnhain: Measures of Proper Motion Stars AB and D (13.0) 1908.556 i6o?97 so7o8 573 160.60 50.22 The measures of the two small stars (1849-1912) show clearly that the proper motion of v Cygni is very small and doubtful. A long time-base is required, even in observations with the micrometer. The results given in the star catalogues are uncertain and inconsistent : Auwers o7c7 in 237?! Boss 0.029 in 136.7 10898. p 1140. (6. 7... 12. 3) R.A.2ii 4 m i' Decl. + 58 6' A and C (12.9) 1912.353 270^70 69779 .408 270.83 69.99 .411 270.34 69.85 1908.56 160.78 50.15 No other measures of these faint stars. The proper motion of the close pair is given : Bossert o7ig6 in I24?2 Porter 0.075 in 180.0 Paris 0.134 ' n I 44-4 Kustner 0.081 in 180.0 AB and E (10.9) 1908.520 9?O7 82776 .556 9.04 83.06 559 8.87 82.67 573 9-20 83.15 1908.55 9.04 82.91 The measures of the three small stars should be continued. 10881. p 271. (7. 2... 9.7) R. A.2i h i2 m 49 < Decl. 26" 51' A and B 1908.671 243?8 3733 10.742 244.0 3.37 10.760 243.9 3-72 1912.39 270.62 69.88 No other measures of C. No proper motion of the large star found in Groombridge, Bradley, Boss, etc. No relative change in AB. 10913. H 934- R. A. 21" 15 14' Decl. 9 i/ H 934 not identified; faint pairs in the vicinity, but none answering the description fully. About 2 m directly preceding the supposed place of H 934 is h 2113. This is a little brighter in the center. h 2113 and SD (9) 5711 (9.3) 1009.531 279?! 137726 534 279.3 137-47 1910.04 243.9 3.47 A system of the 61 Cygni type, with large proper motion. This is shown in the measures of the faint star, C : A and C (12.0) 1908.671 72? 13 8o7o4 10.760 72.20 82.40 The prior measures are : 1898.84 74?2 74757 m 3 1899.75 72.9 75-45 4n Bar The measures of C should be continued. The proper motion of AB from meridian positions is: Porter 0*693 in 245?3 Paris 0.676 in 239.1 10885. u Cygni. O2 433- (4. 6. ..10.2) R. A. 21" 12 59- Decl. + 34 24' A and B 1912.675 2i9?3 14784 .678 219.0 14.76 .698 219.7 14-94 1909.53 279.2 137.36 The comparison star has a small companion n.8m, and is the double referred to by Herschel in his note on the nebula. 1909.531 63?: 25758 534 62.9 25.28 1909.53 63.0 25.43 10917. H 281. (8. 7... 9.2) R. A. 21" 15" 32' Decl. + 16 14' 1908.597 335?48 14711 633 335-50 14.02 636 334-70 13-90 1908.62 335-23 14.01 1911.392 335?4 13789 449 335-1 14.01 .468 334.6 13.94 1912.68 219.3 14-85 A and C (10.2) 1912.675 i8i?6 2i7i6 .678 179.7 21.39 .698 180.0 21.45 I9".44 335-0 13.95 The apparent change shown by Herschel's measures of 1829 is due to errors of observation. 1912.68 i*. i 21.33 272 Burnham: Measures of Proper Motion Stars 10918. Espin 98. R. A. 21" 15" 36" Decl. + 51 49' A and B (8.0. ..9.9) 1907.329 '< 3io?3 26^26 348 309-8 26.36 10932. i Fegasi. 2 ii, App. II. (4. 5... 8. 6) R. A. 21" i6 m 32' Decl. + 19 18' A and B 1912.810 3ni5 36"26 .813 311-40 36-42 .465 310.2 26.45 1912.81 311 27 36 34 1907.38 310.1 26.36 A and C 1907.329 87?3 29'.'7S A and C (12.4) 1912.810 i990 75"7i 813 20-35 75-70 .463 87.2 30.10 I9I2.8I 20. 12 75.7O 1907.38 87.3 30.01 C and D (9.9.. .14.2) 1907.348 261 ?o 7"2S .465 262.0 7.35 No other measures of C. A and B have a common proper motion : Auwers o"ii2 in 53?9 Boss 0.117 in 60.3 1907.41 261.5 7-30 No other complete measures. 10920. 22787. (7.0... 8.3) R. A. 21" is" 1 42' Decl. + 1 31' A and B 10936. fJ Equulei. (5-2...I3-5) R. A. 21" i6 ra 56" Decl. + 6 18' A and B 1912.755 257?o 34?35 .791 256.9 34-67 793 257.7 34.04 1908.594 20?22 22?72 .597 20.32 22.53 .633 20.17 22.68 1912.78 257.2 34.35 A and C (11.5) 1908.61 20.24 22.64 A and C(g.8) 1912.717 3o6?s6 69^37 753 306.75 68.85 755 306.40 69.40 1908.594 9483 70^13 597 95-22 69.91 633 95-23 70.41 1912.74 306.57 69.21 A and E (12) 1908.61 95-09 70.15 Distance of C is larger in the first measure of 1892. No 1912.717 273?28 88"78 753 274-75 89.60 755 275.00 89.25 change in AB. 10925. 22790. (5. 6... 9.9) R. A. 21" 15 55* Decl. + 58 7' A and C (10.2) 1009.342 350o8 74".i8 400 350.75 73.98 458 350.78 74-28 1912.74 274.34 89.21 From the measures of the small stars (1877-1912) we have the proper motion of the large star with a high degree of accuracy, and this value is not likely to be sensibly changed by future measures. In my measures of AE in 1901 (G. C. Part II) there is an error in reducing the distance ; for 93^49 read 88"6s. The measures of the three companions give the annual motion of A : AB R. A. + 0^079 Decl. + 0^052 AC .099 .030 AE .098 .049 1909.40 350.84 74.15 No certain change. 1880.69 350?70 74"82 2n BI. For the proper motion of the principal star we have : A. G. Hels. 0^027 in 150^7 Boss 0.013 in 141.7 + 0.092 +0.042 Therefore the corrected proper motion of (3 Equulei is: o''ioi in 6s?5 This motion from the star catalogues is decidedly too small : Auwers o"o23 in 66?7 Boss 0.054 in 83.6 273 Burnham: Measures of Proper Motion Stars 10943. S 788. (7. 2... 7. 3) R. A.2i"i7 ra 3i > Decl. 7 6' 1906.813 88?7 45^05 7.465 88.6 45.32 7.482 89.0 44.92 10966. 225, App. I. (6.0... 6. 6) R. A.2i"i8 m 57' Decl. + 36 50' A and a (n.o) 1909.378 i5520 I79"02 .400 IS5.I3 178.75 438 155.13 178.73 1907.25 88.8 45.10 Proper motion. (See Part II of the General Catalogue.) The positions in A. G. Ott. give : 1893.3 88?7 4 3"3 A third star should be connected. 10945. 18 Aquarii. H 5517. (5. 6. ..13.1) R. A. 21" I7 m 37' Decl. 13 23' 1912.755 32i?i3 48*94 .791 321-35 49-05 793 321.30 48.77 1909.41 I55.I5 178.83 The prior measures are uncertain: 1879.91 156^03 l8o"47 in Bl 1880.36 154.93 178.39 m Bl. No change in the bright stars. The distant star has two small companions, the nearest very faint : a and b (14.0) 1909.378 i84?o io?6o a and c (12.8) 1909.378 326?7 I7"8o .400 325.8 17.73 .458 325-1 17.77 1912.78 321.26 48.92 From a comparison of this with my single measure in 1877, he proper motion of 18 Aquarii is : o"ii2 in 69?5 The measures should be continued. The star catalogues give his: Auwers 0*070 in 88?4 Boss 0.086 in 88.0 10951. 22796. (7. 3... 8.8) R. A. 21" 17 57' Decl. + 78 6' 1911.449 42?8s 25*42 .509 43-00 25.30 .529 42.83 25.34 1909.41 325.9 17.77 11005. H 1647. (6.o...ii.o) R. A. 21" 23 30' Decl. + 21 39' A and B 1912.717 I76?9 4o"8o 753 176.5 40.84 755 177.4 4i 32 1912.74 176.9 40.99 A and C (12.8) 1912 .717 127 .4 4^* 20 .753 126.0 40.86 755 125-7 41-26 1911.50 42.89 25.35 From measures on 32 n by 2, A, HI, Hu and p" (1832-1911) le apparent motion of A is : 0*012 in io8?3 Although B is not a very small star, it is probable that this > the real proper motion of A. 10959. H 1641. (6.5. ..n. 3) R. A. 21* 18" 34' Decl. + 23 46' 1910.397 327 52*36 .471 312.00 52.20 473 3-30 53-64 1912.74 126.4 41.11 The other measures are of late date. No proper motion found for the large star. 11014. 2 Pegasi. P 685. (5. 5... 12. 5) R. A. 21" 24 31' Decl. + 23 7' 1907.329 332?4 29*69 348 332.6 29.36 -444 33I-I 29.79 1910.45 3II-52 52-73 These measures show that the small star is not moving with le other. A continuation of the measures will give the move- icnt of A. Other values of the proper motion of A are: Boss 0^125 in 8i?7 A. G. Ber. o.m in 79.7 I907-37 332.0 29.61 The measures should be continued. For the proper motion of 2 Pegasi we have : Auwers o"ois in 82^5 Boss 0.017 in 103.6 274 Burnham: Measures of Proper Motion Stars 11025. Schj 2g. (9.0. ..9.1) R. A.2i B 25 m n' Decl. 14 2' 1911.564 293^28 58^82 583 293-55 58.91 .602 293.73 58.72 11051. 22804. (7. 3... 8.0) R. A. 2i h 27 ra 26" Decl. + 20 11' A and C (11.8) 1912.583 ios?53 97'/oo .619 105.50 96.90 .622 105.47 97-50 1911.58 293.52 58.82 The only other measures are my own. 11026. p Aquarii. R. A. 21" 25 14' Decl. 6 & A and B (11.5) 1912.465 3i8?8 35^13 .504 318.8 34-72 507 318.4 34-95 1912.61 105.50 97.13 It is uncertain whether the change in AB is due to orbital or proper motion. If the latter, the principal star is moving about o"oi4 in 240. The fact will appear from later measures of the faint star. 11057. H 1657. (8. 9... 12) R.A.2i h 28 m 23" Decl. + 47 57' I9II.449 I77 2i"53 .471 17.4 21. 61 487 17.3 21.51 1912.49 318.7 34.93 A and C (10.9) 1912.465 i86?2 s6'.'33 .504 184.6 56.44 507 185.5 56.18 1911.47 17.5 21.55 Never before measured; identified as DM (47) 3462. The place (1880) as given here. The cluster referred to by Herschel, of which H 1657 is a part, is h 2196. 11077. s Capricorni. H 3040. (4. 7... 9. 5) R. A. 21" 30 m 22" Decl. 20 o' 1911.663 47?n 68"24 .698 47.00 67.98 .720 47-35 68.25 1912.49 185.4 56.32 The early measures of C are discordant in distance. From the measures of AB we have for the proper motion of p Aquarii: o"o2O in I28?4 Further measures are needed of both companions. The cata- logues leave the proper motion very uncertain in amount and direction : Auwers o"oo8 in 277?6 Newcomb (Stand.) 0.021 in 142.9 Newcomb (F. C.) 0.020 in 121.5 Boss 0.016 in 115.1 11029. H 3031. (9.5... 10. 7) R. A. 21" 25 27' Decl. + i 9' 1907.578 254?o 26'/68 .581 253.8 27.05 .772 252.9 26.63 1911.69 47.15 68.16 From the three sets of P measures, each on 3 n (1881-1911), the proper motion of E Capricorni is : o"o22 in 83?9 The results from the star catalogues are contradictory in all respects : Auwers o'.'oi3 in 256^7 Newcomb 0.016 in 183.9 Boss 0.009 in 103.3 11079. H 938. (8.1. ..n. 8) R. A. 21" 30 30 s Decl. + 7 21' 1907.540 149^0 I7:'si .578 149.1 17.34 .581 148.9 17-77 1907.64 253.6 26.79 No other measures. 11032. 22803. (7. 4... 9.0) R. A. 21" 25 54' Decl. + 52 24' 1908.594 287?58 24^33 597 288.19 24.55 .633 287.53 24.40 1908.61 287.77 24.43 Change from proper motion of A. From the measures of the small star we have: Measures o"o24 in 74?6 A. G. Harv. 0.014 ' n 270.0 Groombridge 0.025 in 80.8 1907.57 149.0 17.54 No other measures. Herschel gave the angle :66?o. 275 Burnham: Measures of Proper Motion Stars 11103. 3 P egasi. 2 56, App. I. (6.0... 7. 4) R. A. 21* 31 45' Decl. + 6 5' A and B 1911.625 348?62 39*05 .644 348.71 38.98 663 349-14 39-07 11125. 24 Aquarii. p 1212. (6. 5... 6. 9) R. A. 21* 33 20 s Decl. o" 36' AB and C (10.9) 1911.602 I455o 42*03 .644 I45.70 41-77 .663 146.11 42.04 1911.64 348.82 39.03 As these stars have shown no relative change in three- fourths of a century, I have connected a very faint star for the common proper motion: A and (13.2) 1911.625 H7?io 91*07 .644 II7-76 91-05 .663 117.81 90.94 1911.63 145-77 41-95 This will not sensibly change the proper motion of AB pre- viously given from the measures of C to 1904. Measures 0*226 in 88?4 Auwers 0.215 in 82.5 Boss 0.236 in 86.4 11128. Espin 102. (8. i... 10. 8) 1911.64 117.56 91.01 The proper motion of A from the star catalogues is : Auwers 0*039 in 72?2 Boss 0.052 in 95.5 R. A. 21* 33 36' Decl. + 47 57' 1908.575 36?o 11*47 597 37-7 ii-30 613 35-3 II-39 11107. 257, App. I. (6. 5... 6. 5) R. A. 2i> 31" 58' Decl. + 66 12' Whatever proper motion there is, is common to both stars, but it is so small that it is very uncertain in amount and direc- tion. From the Groombridge Catalogue we have : A 0*040 in 207 i B 0.033 in 107.7 1908.59 36-3 11-39 The only other measures are given in the General Catalogue. 11129. fJ 686. (7. 7... 12.0) R. A. 21* 33 43* Decl. + 55 13' AB and C (8.3) 1910.473 ii?22 4i"i7 .509 10.93 41-23 .529 10.13 41.22 To determine this motion hereafter, I have connected a small star: A and a (10.5) 1909-573 345 15 123*68 589 345-32 123.38 592 345-22 123.74 1910.50 10.76 41.21 AB and D (n.l) 1910.473 283?39 41*73 .509 282.97 41.51 .529 283.47 41.76 1909-58 345.23 123.60 11115. 4 Pegasi. H 941. (6.0. ..12.0) R. A. 21* 32*31* Decl. + 5 14' 1909.589 33555 26*51 592 335-55 26-24 630 335-43 26.72 1910.50 283.28 41.67 No change in C since 1875. No other measures of D. The proper motion of the close pair is doubtful: A. G. Harv. 0*058 in 27o?o 11147. Espin 140. (8.0... 13) R. A. 21* 34 42' Decl. + 56 26' A and C l'K>.('> 335-SI 26.49 The measures of this (1878-1909) give for the proper motion of 4 Pegasi: 1908.575 33T7 "*63 597 332.0 n.66 .613 331-6 11-53 0*142 in 77?o The meridian positions give : Auwers 0*089 in 69?7 Boss 0.103 in 84.5 1908.59 331.8 ii. 61 A and B (14.2) 1908.613 i82?3 6"57 .636 183.5 6.62 It would be certain that the motion given by meridian obser- 1908.62 182.9 6.60 vations is too small, except that the first micrometer measure is on a single night. This will be corrected by later measures. The very faint companion, B, was detected by Mr. Oliver J. Lee of this observatory. No other measures. 276 Burnham: Measures of Proper Motion Stars 11152. Ho 464, (7.0... ii. 3) R.A.2i"34 m 55' Decl. 15 23' 1908.636 I04?4 17^54 .652 .671 103.6 104.3 17.79 I7.8S 1908.65 104.1 17-73 The following measure is not given in the General Catalogue: 1906.62 io3?9 i7'/55 3n Doo. 11158. 41 Capricorni. See 454. (5. 4... 13. 5) R. A. 21" 35 m io s Decl. 23" 48' 1908.671 10.760 199-7 200.4 4-50 1909.71 200. o 4-85 The small star is probably moving with the other. The brilliant compressed cluster, h 3128, is closely preceding, same declination. For the proper motion of 41 Capricorni we have: Auwers o''i3o in I44?7 Paris 0.210 in 157.4 Boss 0.131 in 135.4 11172. H 3050. (9. 5... 10.6) R. A. 21" 35 55" Decl. + 6 35' 1908.633 .636 .652 46?! 46.7 46.0 23 17 23.10 23-38 1908.64 46.3 23.22 The distance in the prior measure of 1895 is much too large. 11184. 76 Cygni. 8796. (6. 2. ..9.0) R. A. 21" 36 45' Decl. + 40 16' I909.SSI 570 573 231^50 231.38 231.13 62.95 62.83 1906.56 231.34 62.85 Distance probably increasing. The proper motion of 76 Cygni is small : Auwers o'.'o48 in iog?6 Battermann 0.053 in 193-6 Boss 0.052 in 191.4 If the Cincinnati measure of 1879 is substantially correct in the distance of 64"26, the proper motion of the large star is nearly all in Right Ascension instead of Declination. The measures give: o"o74 in 276?3 11205. e Pegasi. 8798. (2. 4. ..11.5) R. A. 21* 38 17" Decl. + 9 20' 1910.395 397 436 A and B 32468 324-73 324.00 82". 1 1 81.98 81.44 1910.41 324.77 81.84 A and C (8.7) 1910.395 320?s8 141 ''30 397 320.50 141.12 .436 320.80 141.40 1910.41 320.63 141.27 If the large star has any proper motion, it is very small and uncertain from meridian positions. The measures of the two small stars show that it is practically zero. Auwers o'/oop in s6?o Newcomb 0.024 m 260.2 Boss 0.025 in 92.3 11207. Hd 167. (8.0... 13. 5) R. A. 2 1" 38'" 27' Decl. -^6 44' A and C (12.0) 1910.455 36?7 "''47 -586 35.7 11.56 1910.52 36.2 11.51 The principal star identified as SD (6) 5814. The only other measures are given in Part I of the General Catalogue. 11222. x Pegasi. 989. R. A. 21" 39 m 13' Decl. + 25 6' AB and C (2 2824) 1912.526 295?9 I2"37 .562 297.4 12-39 .564 297.0 12.51 .581 297.0 12.42 1912.56 296.8 12.42 The proper motion of the binary system from the measures of the io.8m Herschel companion (1831-1912) must be prac- tically exact : o"o34 in 69?2 From some of the star catalogues we have: Auwers o?O20 in 672 Newcomb 0.040 in 71.7 Boss 0.033 in 86.5 11235. 02 (App.) 224. (7. 7... 8. 5) R. A.2i"40 m 3' Decl. + 15 12' 1908.709 .711 731 550 5-47 5-51 58.50 58.56 1908.72 5.49 58.53 Without material change in distance, but the angle may be diminishing. 277 Burnham: Measures of Proper Motion Stars 11239. 8 Capricorni. 113056. (2.8... 12. 7) R.A.2i"40 m 24' Decl. i64o' 1910.589 301 .&2 n8"6s A and C (13.0) 1908.575 I2i?o 26'.'i4 .594 121. i 25.83 .6l3 121. I 26.19 .608 302.00 119.81 .627 301-35 118.89 .678 301.93 118.24 1908.59 121. I 26.05 There may be a slight increase in the angle and distance of 1910.63 301.78 118.00 The small star is not moving with the other ; and therefore it can be used hereafter for the proper motion of the large star. Auwers o"37o in I4i?6 Bossert 0.387 in 140.8 Boss 0.391 in 138.9 The two measures of the faint star, with an interval of nine AB. No other measures of C. 11305. H 5298. (9.5-- -io. 2) R. A. 2 1* 46 4' Decl. 16 22' 1008.636 3i2?4 6o'/76 .671 312.3 60.17 .673 312.2 60.43 years, give : 0:413 in I34?3 11241. O2 450 rej. (7-2...io.o) R. A.2i h 40 m 32' Decl. + 5 59' 1910.395 249?32 42"3l .397 249.37 42-70 455 249-55 42.53 1908.66 312.3 60.45 Probably fixed. There is a 13. 5m star between the two, nearer A. 11315. Ho 172. (7.0... 12.0) R. A.2i*47 m 5' Decl. + 41 48' A and B 1910.42 249.41 42 51 Change in angle? 1911.392 85.6 10.66 395 85.5 10.44 .430 86.2 10.19 11270. H 1696. (9.5... 12. 7) R. A.2i*43 m ii i Decl. + 65 15' 1912.353 J38?6 I7"n 1911.41 85.8 10.43 A and C (12.0) 1911.392 5o?4 54"p2 395 49-7 55-10 .430 49.4 54-85 .389 141-9 17-09 .408 138.5 17-07 1911.41 49-8 54-96 The measures of this star by Doolittle were received too 1912.38 139-7 J7-09 As referred to by Herschel, A of H 1696 is one of the chief stars of h 2134; coarse and scattered, all small stars. 11296. 22831. (8.1. ..II. I) R.A.2i"45 n '2i' Decl. + 7 47' 1908.845 356?o J4"66 9.666 35<5-8 14-37 9.706 355-4 I4-56 late to be given in the General Catalogue. The change shown in the direction and distance of C is confirmed by the present measures. AB 1906.54 86?4 io"6o 4n Doo AC 1906.67 5i-3 53-92 4n Doo. There is no substantial change in AB. The measures of C give for the approximate proper motion of A : 0*262 in 2OO?2 A and DM (41) 4299 1875 A R. A. + 35"93 A Decl. + 179-3 A. G. Bonn 1909.41 356.1 14 53 Not fully measured since 1866. 11303. 22834- (7- 3-.. 10.6) R. A. 21* 46" 2' Decl. + 18 45' A and B 1008.575 293-5 4"33 594 293 6 4-40 -613 293.7 4-44 1911.44 +36.43 +189-7 P These positions imply a still larger motion in A. 11323. 22840. (6.0... 7-0) R. A. 2 1 " 47 m 57' Decl. + 55 H' A and B 1912.542 I9500 I9"04 .562 195-35 19-02 .564 104-28 18.92 1908.59 293.6 4-39 1912.55 194.88 18.99 278 Burnham: Measures of Proper Motion Stars A and C(i3-7) 1912.526 3473 S5"i8 .562 347.90 55.38 .564 348-I7 54-97 For the proper motion of AB. This from meridian is given: Porter o''i64 in 232?4 Glasgow 0.203 in 209.1 11353. Ho 609. (9. 5... 9. 8) R. A. 21" 50 4 s Decl. + 29 9' 1909-515 173-7 3"3 .725 176.6 3.06 positions distance. 1912.55 347-79 55 -18 Very little relative change in AB, and the proper motion must be the same. A o"o3O in I45?2 Auwers 0.015 in 40.9 Groombridge 0.015 in 93.7 Boss B 0.044 in 87.4 Groombridge 0.045 in 67.9 Boss The faint star is measured for determining the real motion in A, if any. B is Groombridge 3598. 11327. 22838. (6.0... 8.8) R.A.2i h 48 m 2i' Decl. 3 52' I9I2.8IO l84?05 I9''20 .813 184.05 19.19 .829 184.55 19-18 1909.62 175.1 3.04 The early measures are singularly discordant in (See General Catalogue.) 11355. Battermann. (9. 2... 9.3) R. A. 21" 50 7 s Decl. + 15 2' A and B 1908.537 i62?s ^54 .556 162.8 1.54 573 162.9 1.56 1912.82 184.22 19.19 The measures in point of time are sufficient to give the move- ment of A with great accuracy. From the four positions on ii n by 2, A and fj (1839-1912) the proper motion of the large star is : 0*030 in i89?9 The bright star is not given in Boss' General Catalogue. 11334. 22843. (7-0... 7. 2) R. A. 21" 48 37" Decl. + 65 11' AB and C (10.5) 1912.353 275?73 56725 .389 276.30 56.13 .408 276.73 55-79 1908.56 162.7 J-55 A and C (15.0) 1908.556 302?2 22^83 573 300.2 22.87 1908.56 301.2 22.85 A and B have the same proper motion, while C is fixed in space. Later measures of this will give the proper motion of AB. A. G. Ber. o"23i in 141 ?2 11359. H 3072. (8. 5... 10. 7) R. A. 21" 50" 25' Decl. + 58 53' 1910.627 77?8 I3''20 .660 79.4 12.95 .666 78.2 13.00 1912.38 276.25 56.06 The proper motion of AB is small : Groombridge o''o22 in 209^7 The only other position of C is from the Greenwich Astro- graphic Catalogue. With a scale value of 3Oo"o, we have from the difference of the coordinates : 1895-7 275?8 56'Jo 11346. P75- (8. 1... 8. 5) R. A. 21" 49 m 40" Decl. + 10 19' AB and C (12.5) 1912.408 2i2?53 48^40 .465 212.65 48.40 .504 212.73 48.64 1910.65 78.5 13.05 No early measures. 11364. OS 454. (7.0. . .9.0) R.A.2i h so m 3 4 ' Decl. + 23 46' A and C (10.8) 1908.594 26 4 ?88 43 "2 4 597 265.03 43.20 .633 264.50 43.06 1908.61 264.80 43-17 No change since 1895. 1912.46 212.64 48.48 279 Burnham: Measures of Proper Motion Stars 11372. 02455. (7-5--. 9.o) R. A. 21* so 1 " 56' Decl. + 15 33' 1912.583 2;o?4 9^95 .619 271.2 IO.22 .622 27O.6 9.91 11422. Howe 59. (7.0. ..10. 5) R.A.2i"55 m o' Decl. 16 n' A and C (9.0) 1910.589 29i?95 I02:'4i .605 292.06 102.60 .608 291.0 102.78 I9I2.6I 27O.7 IO.O3 The change, if any, since 1847 is confined to a very small increase in the angle. For the proper motion of A we have : Kustner o"o39 in 190?$ 11386. Lewis 37. (IO.O...ILO) R. A.2i h 52 m Decl. + 20 18' Not found in sweeping over the rough place given by Lewis. 11393. A. G. 279. (9. 6... 9.6) R.A.2i b S3 n '29' Decl. + 5 43' 1909.438 70?7 9"73 .496 71-3 9-71 1910.60 291.7 102.60 The apparent change in distance shown by the measures of Zinner in 1909 of 104" is not confirmed. 11427. 22851. (8.0... 8.3) R. A. 21" 55 13' Decl. 12 34' A and B 1912.678 I2I?25 l8?92 .695 121.24 18.82 .698 121.50 18.99 1912.69 121.33 18.91 The proper motions of the Struve stars are given by Batter- mann from transit positions: A o?o88 in oo?o B 0.071 in 124.3 As there has been no relative motion since 1829, the motions of course are identical. I have therefore connected a third star. No prior measures. A and C (10.0) 1912.678 I336s 78?i2 .695 134-00 78.19 .698 134-20 77.90 1909.47 71-0 9-72 In the R. A. of this in Part I of the General Catalogue for 52 read 53 m . 11396. Sh 336. (7. 5... 8.1) R. A. 21' 52" 36' Decl. + 5 2/ A and B 1908.769 224?25 99"88 .788 224.47 99-77 .804 224.97 loo. ii 1912.69 133-95 78.08 11428. 20 Pegasi. H 289. (5. 8. ..11.4) R. A. 21" 55 m 14' Decl. + 12 33' 1908.537 32490 52"93 .556 324-82 53-30 559 324.74 53-07 1908.79 224.56 99.92 One of these stars has a proper motion in declination of about oTio. Both are given in some of the catalogues: 1825 225?2 10377 Weisse 1885 224.6 102. i A. G. Leip. To determine which is moving, I have connected a 12 m star : A and C 1908.785 102^23 85731 .788 101.15 85.24 .824 102.33 85.42 1908.55 324-82 53.10 The three positions of the companion (1878-1908) give for the proper motion of A : o"o8o in I22?5 From the star catalogues : Auwers 0*063 in '42?7 Greenwich 0.068 in 136.9 Boss 0.077 i" 136.7 11433. O2(App.)228. (7. 3. ..9.0) R. A.2i*55 m 5i" Decl. + 4 12 A and B 1912.526 26?48 76^77 -545 26.53 76.75 .562 26.93 76.86 1908.80 101.90 85.32 11401. H 3078. (9. 4... 9. 6) R. A. 21* 52" 59' Ded. + o 42' 1907.444 i894 4*54 .465 191.5 4.13 .559 188.9 4-44 1907.49 189.9 4.37 No other measures. 1912.54 26.65 76.79 280 Burnham: Measures of Proper Motion Stars A and a (12.0) 1912.526 I59o 24756 545 158.8 24.36 .562 159.0 24.66 With the measures by O2 and Hu (1849-1908) we have for the proper motion of the large star : AB R. A. + 07019 Decl. 07049 AC 0.017 0.038 1912.54 158.9 24.53 The change in AB is probably due to the proper motion of the larger star, though B might have a small movement of its own. The measures (1875-1912) give for the apparent motion of A: o7og6 in i8o4 From the star catalogues we have : Paris o7i7i in 158?! Porter 0.145 in 163.2 Boss 0.160 in 165.1 The continued measures of the faint star near A will give an independent value. + 0.018 0.0435 Therefore the proper motion of A is : 07047 in I57?5 11483. ICephei. 22863. (4. 7.. .6. 5) R. A.22"o m i8" Decl. + 64 2' A and C (12.7) 1912.353 199 59 95703 .408 198.98 9S.6o .411 199.33 95-30 11464. P 696. (8.0... 8.0) R. A. 21" 58 43' Decl. + 15 17' AB and C (8.3) 1912.638 3i8?55 59-'7o -660 318.53 59-89 .675 318.30 59-66 1912.39 199.30 95.31 The large stars form a system of the 61 Cygni type. No other measures of the small star. The proper motion of A is given from the star catalogues : Auwers 0^195 in 7o?2 Paris 0.254 in 75.1 Porter 0.197 ' n 70.4 1912.66 318.46 59-75 C and D (9.3) 1912.660 27?3o 8s7i8 .675 27.62 85.30 11499. igCephei. f5 697. (6.0... 12.0) 1912.67 27.46 85.24 The proper motion of the close pair is : A. G. Ber. o7o92 in 2o6o C and D arc respectively DM (15) 4556 and 4557. For R. A. 22" i m 27' Decl. + 6i42' 1912.753 92?5 19787 755 92-8 19.49 .791 92.7 19-83 comparison there is only the following: AC 1870 3i6?6 5876 A. G. Ber 1900.80 317.2 59.48 in Doo AD 1870 24.5 84.6 A. G. Ber From a comparison of the A. G. position of C with the present relation, the proper motion of AB is : 11472. O2 4 6o. (7. 3... 11. 7) R. A. 2i h 59 32' Decl. + 1 12' A and B 1908.537 3479 8786 556 347-4 8.92 573 347-6 8.72 1912.77 92.7 19-73 The four (5 positions of the faint star (1878-1912) show clearly that the proper motion of the bright star is substantially in declination, and not in R. A. as appears from the meridian observations. The several results are : Measures o7o32 in i86?7 Auwers 0.081 in 114.0 Groombridge 0.014 in 37-8 Boss o.on in 95.0 11504. 22865. (8. 5... 9.0) R. A. 22" i m 45' Decl. + 69' 38' 1908.655 i88?i 21727 1908.56 347.6 8.83 .671 188.9 21.40 .673 189.0 21.49 1908.537 404 16775 556 41-3 16.73 573 40-3 16.73 1908.67 188.7 21.39 No third star near enough to measure. The apparent motion of A from the measures is: 1008.56 40.7 16.74 o7o88 in 47?2 281 Burnham: Measures of Proper Motion Stars 11517. H 3092. (8.9... 9. 5) R. A. 22* 2 53' Decl. 19 2' 1909.725 343 4 28*45 .802 342.8 28.71 Rejecting that from the above, we have from AB and AC for the proper motion of A : Measures 0*062 in 230^9 Newcomb 0.085 in 211.9 Auwers 0.026 in 235.0 Boss 0.026 in 208.8 To aid in determining whether there is any motion in D, I have connected a small star : D and d (12.6) 1909.589 29S?95 116*11 .592 298.97 116.63 1909.76 343.1 28.58 No change since 1892. 11518. This is identical with Hu 284 (No. 11515). 11520. Ho 470. (7.0... 13.0) R.A.22 h 3 1 "24 > Decl. + 38 47' 1908.655 352?9 12*68 671 3SI-4 12.43 .689 350.6 12.32 1909.59 298.96 116.37 11542. 2 2872. (7. 2... 8.0) R. A. 22" 4 m 32' Decl. + 58 42' A and D (10.7) 1909.531 152^90 "7"83 .573 152.82 117.53 .589 152.55 "7.8o 1909.56 152.76 117.72 Without change. 1878.83 152^82 117*33 2n Bl 11559. H 1741. (6. 2... 9. 7) R. A. 22" 6 m 29' Decl. + 50 14' 1908.597 3o6?98 25*94 .636 306.60 26.06 .652 306.23 26.20 1908.67 351.6 12.48 The companion is very faint. 1906.65 353? i 11*92 3n Doo. 11526. n' Pegasi. (4. 3. ..12.0) R.A.2/'3 m 54' Decl. + 32 35' A and B 1909.496 3i8?7 27*45 SIS 317.8 26.95 -534 318.7 27-43 1908.63 306.60 26.07 The large star (Groombridge 3882) has some proper motion : Measures 0*160 in 76^0 Bossert 0.151 in 62.5 A. G. Harv. 0.151 in 62.8 Paris 0.181 in 71.6 Groombridge 0.156 in 79.2 11568. 02465. (7. 2... 10. 7) R. A. 22" 7 17' Decl. + 49 36' A and B 1908.594 32: ?5 14*36 597 321.9 14-32 .636 321.1 14.42 1909.51 318.4 27.28 A and C (n.o) 1909.458 262?50 71*17 .473 262.25 70.88 .493 262.40 70.95 1909.47 262.38 71.00 A and D (11.5) 1909.458 89?o8 187798 .493 88.97 188.18 .496 88.90 187.96 1909.48 88.98 188.04 The measures of these stars (1879-1909) give for the proper motion of the large star : AB R. A. 0*045 Decl. 0*039 AC 0.051 0.039 AD o.ioi 0.112 From this it would appear that there arc large errors in the measures of AD, or the small star has a proper motion of its own. 1908.61 321-5 14-37 A and C (13.2) 1908.597 235! i 17*82 .636 234.8 18.28 1908.62 235.0 18.05 No other observations of C. 282 Burnham: Measures of Proper Motion Stars 11583. O. Stone 57. (9. 4... 10. 7) R. A. 22" 6 m io" Decl. 20 42' 1907.581 97?6 9'.'88 .675 97-o 9-74 .692 96.2 9.88 11601. A. G. 281. (8.8... 10. o) R. A. 22" 9 m 9" Decl. + 21 21' 1908.711 22?o 2*43 .750 20.7 2.44 .766 20.7 2.47 1907.65 96.9 9-83 Identified as SD (20) 6379. The corrected place for 1880 is given above. 11588. Ho 291. (7. 2... 12. 7) R. A. 22" 8 m io s Decl. + 48 47' 1908.74 21. 1 2.45 11602. 02467^;. (6. 3... 10. 3) R. A. 22" 9 m 10' Decl. + 2 1 56' 1908.709 274?! 22^96 .711 274.0 22.86 .728 273.6 23.06 1908.594 198.0 9.43 597 198.7 10-22 .636 199.1 9.41 .652 200.4 9-74 1908.72 273.9 22.96 No motion. 1908.62 199.0 9.70 Change uncertain. 11592. 22877. (6. 4... 9.6) R. A. 22" 8 m 33' Decl. + 16 36' A and B 11613. 22890. (8. 5... 8. 7) R. A. 22* 10 26' Decl. + 49 17' A and B 1910.490 li?9 9?47 .509 10.7 9.20 .512 ii. 2 9.26 1910.471 5?6 I2?59 473 4-7 12.66 493 5-2 12.63 1910.50 11.3 9.31 A and DM (49) 3788 (9.3) 1910.509 277?63 72"9i 1910.48 5.2 12.63 .512 277.55 73-02 B and C (10.3) 1910.471 300?43 ioo'.'92 473 300-62 101.22 .493 300.75 101.02 1910.51 277.59 72.96 No change in AB. These stars form a part of / 2155. 1910.48 300.60 101.05 It is very improbable that B has any appreciable proper motion. Measures hereafter of the third star will show. The meridian values appear to be too large: Measures of B o"n6 in 222^6 Stumpe 0.166 in 230.9 A. G. Ber. 0.157 in 236.4 Bossert 0.142 in 225.2 11625. (3 377- (8.0...) R. A. 22" ii" 1 23" Decl. + 54 4' A and B (10.6) 1911.334 6s?49 59^23 375 65.28 58.88 395 65.30 59.12 11596. Hd 170. (9. 7... 9. 9) R. A.22 h 8 m 5i" Decl. + 16-38' 1911.37 65.36 59.08 A and a (13.0) 1911.395 ii6?i 3i"84 .411 116.0 32.07 .468 115.8 31.80 1908.636 241 ?s 7?39 .652 242.8 7.39 .655 242.0 7.18 1911.42 116.0 31.90 A and b (13.0) ion IQ< 262 z, 77"^8 1908.65 242.1 7.32 The apparent change from the Harvard measure of 1867 is .411 263.2 37.44 .468 262.4 37.36 not confirmed. 1911.42 262.7 37.39 Burnham: Measures of Proper Motion Stars A and d (12.6) I9".39S 35?2 57T85 .411 358.6 S7-8o .468 358.1 57.80 A and C (10.0) 1912.619 142^20 120*73 .622 142.22 121. 18 .638 142.00 120.00 1911.42 358.3 57.82 From the four measures by on ion of AB (1891-1911) the proper motion of the principal star is: o"258 in ^.g Comparing the present measures of the fainter stars with the Greenwich photographic measures in 1899 we have : Aa R. A. + oTi96 Decl. + 0^092 Ab 0.205 o/*07 1912.62 142.14 120.94 11659. 02469. (7. 2... 8.8) R. A.22 b i5 m ii" Decl. + 34 31' A and B 1908.750 284^77 29*52 .769 284.36 29.96 .788 284.65 29.89 .804 285.30 29.56 + 0.200 +0.100 Therefore the approximate proper motion of A is : 0*223 in 63^4 From meridian observations : A. G. Harv. 0*226 in 8i?4 Porter (Cin u ) 0.168 in 56.1 Porter (Cin") 0.225 in 77.2 11641. 22894. (6.0... 8.2) R. A. 22" I3 1 " 40' Decl. + 37 10' A and C (9.6) 1908.537 '7573 221*40 573 174-47 221.55 1908.78 284.77 29.73 From seven positions, on 22 nights (1846-1008) the apparent motion of A is : 0*047 in I28?4 To make certain hereafter that the motion is all in the larger star, I have connected a third 12. 2m star: A and C 1908.750 51-43 52"90 .788 52-37 52.92 .804 52.43 53-61 1908.78 52.08 53.14 11663. Y Aquarii. H 3106. (3. 9... 12. 2) R. A. 22' is 27' Decl. 1 59' 1909.725 I3378 41*09 744 133-37 41.38 .760 132.68 41.46 .782 133.70 41.66 I908-55 175-10 221.47 B and C 1908.556 i7437 ao6"6i 559 174-24 206.51 .575 174-62 206-73 1908.56 I74-4I 206.63 For this star we have: 1880.70 I74?oo 204*83 2n Bl The measures of the small star should be continued. The proper motion of A is given : Boss 0*092 in 48^6 11657. 22895- (8.5--.IO.O) R. A. 22' 15 8' Decl. + 24 21' A and B 1912.619 36?6 8*38 .622 36.0 8.37 .638 36.2 8.40 I909.75 I33-38 41-40 From a continuation of these measures, the proper motion of Y Aquarii can be found with a high degree of accuracy. Measures to 1001 0*142 in 95?7 Auwers 0.102 in 85.0 A. G. Nice. 0.103 >n 80.5 Newcomb 0.123 in 82.9 Boss 0.123 in 85.8 11669. 2 Lacertae. 111755. (4. 6... 10.8) R. A. 22" i6 m 4' Decl. + 45 56' 1912.562 9 23 48*01 .564 8.98 48.00 .581 8.83 48-12 1912.62 36.3 8.38 The proper motion given in Part II of the General Catalogue of A will not be sensibly changed by the later measures : 0*057 in 247?8 The distant star measured is the principal component of a small pair in the field. The only other position is given in the General Catalogue. 1912.57 9.01 48.04 No sensible change in the small star since 1879, which would indicate an absence of motion in the bright star. The meridian positions leave the question doubtful : Auwers 0*021 in 194^8 Groombridge 0.025 in 182.4 I'.'i'-s O.O20 in 90.0 284 Burnham: Measures of Proper Motion Stars 11674. O2 (App.) 231. (7. 2... 8.0) R. A. 22" 16"' 37 s Decl. + 9 20' 1912.810 no?io 9i''i2 .813 110.70 90.80 .829 110.48 90.86 AB and D (12.0) 1912.638 igo?67 114*24 .675 190.38 114.65 .678 190.62 114.36 .695 190.48 114-17 1912.67 190-54 114-35 AB and E (10.0) 1912.638 I32?97 131*46 .675 132.68 132.42 678 133-02 132.24 .695 133.03 132.47 1912.82 110.43 90-93 No change since 1875. 11677. H 1756. (6. 7... 10.8) R. A. 22" i6 m 42' Decl. + 40 4' A and B 1912.562 285^7 21*96 .564 286.1 21.89 .581 287.0 22.37 1912.67 132.93 132.15 The only other measures of the distant Herschel companions depend upon a single night in 1898. It is evident from in- spection that the proper motion of 51 Aquarii is very small, if there is any motion at all. The time interval is too short, and the errors in a single measure possibly too large to give an accurate value for a proper motion as small as this seems to be, but in any event it should be as reliable as that found in any other way, and a continuation of the measures after the proper interval will cure these defects. Comparing the present posi- tions with the single observations referred to, we have for the approximate motion of the large star : AC R. A. + 0*002 Decl. + 0*001 AD +0.001 +0.005 AE +0.003 0.005 From which we have for the proper motion of 51 Aquarii: 0*002 in 8o?6 From the star catalogues the results are contradictory : Auwers 0*015 in 277?6 Hedrick 0.019 in 124.8 Boss 0.024 in 90.0 11712. Ho6i6. (7. 2... 12. 5) R. A. 22" 19" 43" Decl. + 21 58' 1909.706 356?7 !9"56 .725 356.3 19-69 .742 358.6 19-21 1912.57 286.3 22.07 A and C (i3-S) 1912.564 325^3 22"39 A and D (11.3) 1912.562 7595 57"86 .564 75.27 58.35 .581 75-35 57-81 1912-57 75-52 58.01 The only other measures are those in the General Catalogue. 11686. 02(App.)232. (8. 4... 8. 4) R. A. 22" I7 m 34' Decl. + 3 14' 1906.755 i9ii 67*64 7.465 191.5 67.76 7.502 191.2 67.82 1907.24 191.3 67.74 1908.709 191 53 67*86 .711 191-23 67.97 .728 191-15 68.13 1908.72 191.30 67.99 One of the stars has a small proper motion. For determin- ing hereafter which it is, I have connected a faint star : A and C (11.4) 1908.728 268?22 I75"o2 .750 268.33 174-57 .788 268.60 174-24 1909.72 357-2 19-49 The companion is very faint ; probably no change. 11716. 34Peg/. (6. 8. ..ii. 7) R. A. 22" 25"- 6" Decl. + 51 48' 1910.698 i?6 14*49 701 i.o 14.55 .703 0.7 14.34 1911.46 59.30 46.14 From 20 positions of AC (1890-1911) the proper motion of A is: o'.'934 in 242^5 This will not be materially changed by later measures. A and DM (56) 2784 1910.509 141 "90 200*93 .529 142.15 200.68 .531 142.02 200.93 1910.70 i.i 14.46 The distance may be decreasing. The proper motion of A is : A. G. Harv. 0*043 m 33O?7 11778. 02473. (6.7...IO.O) R. A. 22" 25 m 46' Decl. + 56 37' 1912.717 357?2 14*69 753 357-2 14.77 1910.52 142.02 200.85 1911.411 141 ?93 200*59 .471 142.00 200.81 .487 142.05 200.64 1912.73 357-2 14.73 No change since 1848. No proper motion found in the lead- ing star catalogues. 11779. 22917. (8.0... 8.0) R. A. 22" 25 50' Decl. + 52 55' A and C (11.5) 1911.334 i86?6o 89*47 .373 186.45 89.54 .375 185.60 89.51 1911.46 141-99 200.68 The motion deduced from the measures of the distant star of course should be exactly the same, but the agreement is all that could be expected, considering the fact that the interval covered by the micrometer positions is only ten years. 0*920 in 246?2 11772. 8 Cephci. 0702. (3.0... 13.0) R. A. 22" 24" 43" Decl. + 57 48' A and B 1911.411 284?6 19*67 .468 284.7 19.62 .471 285.3 20.30 .487 286.0 19.74 1911.36 186.22 89.51 For the proper motion of AB. No change in the Struve companion. A. G. Harv. 0*007 m 9o 11781. H 1777. (9.0... 12.0) R. A. 22" 25 54' Decl. + 47 49' I9II-334 320? 5 11*09 373 319-8 11.32 .392 318.9 11.32 1911.46 285.1 19.83 The proper motion of 8 Cephei is small ; and, therefore, from meridian observations uncertain in direction and amount. Some of these values are : Auwers o7oio in 151^9 Groombridge 0.018 in 112.4 Newcomb 0.013 in 83.6 Boss 0.012 in 75.9 From the three sets of measures of AB on gn (1878-1911) we have for a corrected and independent value : 0*017 in 77?2 The measures should be continued after the proper interval for a final correction. The proper motion of the Struve companion C (Bradley 2972) is given : Auwers 0*027 in in7 Boss 0.028 in 69.2 1911.36 319.7 11.24 Evidently an error in the Cincinnati distance of 1879. 11786. aLacertae. fj 703. (3.8. ..12.0) R. A.22 b 26 m 2i' Decl. + 49 40' 1912.408 294?53 34*26 .427 296.18 34.24 .430 295.68 34.60 1912.42 295.46 34.37 From the measures of the faint star (1878-1912) the cor- As there has been no sensible change in AC in 75 years, the proper motion is evidently the same for each star. reeled proper motion of a Lacertae is : 0*135 in 88?3 287 Burnham: Measures of Proper Motion Stars From some of the star catalogues this is: Auwers 0^133 in 85.? Paris 0.149 in 87.3 Boss 0.141 in 84.7 11789. 2 2915. (8.5... 8. 7) 11814. 22920. (7. i... 8. 2) R. A. 22 28 m 27' Decl. + 3 36' A and B 1907-523 I436 13*65 .540 144.1 13.57 -559 142-9 13-70 R. A. 22 26 33' Decl. + 6 48' A and B 1910.493 147-6 12^73 529 147-2 12.39 570 147-5 12.83 1907.54 143.5 13-64 A and C (13.1) I907-523 64?! 2o"59 .540 64.5 20.30 .675 64.7 20.30 1910.53 147.4 12.65 From the measures of 2, A and (J (1827-1910) the apparent proper motion of A is : 0^056 in 252^8 No suitable third star for the micrometer. A and DM (6) 5033 (8.8) 1875 AR. A.3o!i8 A Decl. 49^4 A. G. 1910.5 30.08 49.7 p These observations indicate that the proper motion is in B. 1907.58 64.4 20.40 The distance of AC is i"8 less than Hall's in 1878. No change in AB. 11821. Ho 617. (8.0... 13. 5) R. A. 22" 29 13' Decl. + 21 41' 1907.772 53?3 17^49 7-807 51.1 17.91 8.518 53.9 17.62 11794. H 1779- (8.3... 9-5) R. A. 22" 27" 8' Decl. + 33 37' 1910.698 2i6?9 22?28 .7OI 2I7.O 22.12 .703 217.0 22.18 1908.03 52.8 17.67 Probably without change. 11822. H 3122. (7... 10) 1910.70 217.0 22.19 Herschel's angle in 1828 was 244^9. h 2172 is 4^2 / and 10' n of H 1779; small and elongated in 347. h 2172 and star 12.701 R. A. 22* 29 22' Decl. 21 33' 1909.802 247?44 50751 10.627 247.38 51.02 10.666 247.58 51.08 ipio-739 355 93"2 11798. A. G. 283. (8. 7... 9. i) R. A. 22" 27" 36" Decl. + 54 35' 1910.698 336?4 2:73 .701 335-9 2-90 703 335-3 2.63 1910.36 247.47 50.87 No other measures. 11823. Hn 51. (8.5... 8.9) R. A. 22* 29 23" Decl. + 1 57' 1910.70 335.9 2.75 A and B 1910.703 l82?8 o"97 .739 181.7 0.92 11803. 377- (9-5... to- 3) R. A. 22" 27" 50' Decl. 2 24' A and C (12.5) 1912.810 227?7 27^45 813 226 i 27 91 1910.72 182.2 0.94 ABandDM(i)4632(9.s) 1910.701 29?25 I3i''s6 703 29.38 131-61 .710 29.27 131.78 .867 225.8 28.16 1910.70 29.30 131-65 1912.83 226.5 27.84 There may be a small decrease in distance. The distant star for the proper motion of AB. Boss 0^161 in 6o?3 288 Burnham: Measures of Proper Motion Stars 11824. Arg 44- (8. 9... 8. 9) R. A. 22" 29 23' Decl. + 49 46' 1907.463 i68?o 7^42 .482 169.4 7.39 .485 168.9 7-34 No other measures of C. The proper motion of A is given : Groombridge o"o74 in 7o?3 Boss 0.063 in 68.5 Schroeter 0.040 in 81.5 1907.48 168.8 7.38 Without change since 1877. 11828. 22924. (6.8... 7. 3) R. A. 22* 29 33" Decl. + 69 17' 11845. H 1791. (7. 4... 9.0) R. A. 22" 31 2' Decl. + 56 14' A and C (ii.o) 1910.666 150^40 84"82 .678 150.37 84.34 .681 150.30 84.08 A and B 1910.678 92?3 o".6o .684 96.5 0.85 1910.67 150.36 84.41 To verify the supposed proper motion of A. 1910.68 94.4 0.72 AB and C (11.3) 1910.666 I92?77 "4"79 .681 192.80 114.26 .684 192.80 114.01 Greenwich 0^152 in 251^6 11847. Ho 618. (7. 7-.. 12. 7) R A 22" 31 32* Decl + 26 6' 1910.68 192.79 H4-35 AB and D (ii.o) 1910.678 I9467 178" 20 1909.760 240^6 6"6i 10.605 241.7 6.67 10.627 240.6 6.53 .681 194.60 178.78 .684 104-27 177-85 1910.33 241.0 6.60 1910.68 194.51 178.28 Distant stars for the proper motion of AB. A. G. Chris. oi'i22 in s8?o Porter 0.118 in 58.2 Schroeter 0.114 in 63.3 11833. 2292irej. (9.0... 9-7) R.A.22 h 29 m 5i' Decl. o 27' A and B 1910.701 2i5?7 20"57 Change in angle. The principal star evidently has some proper motion. From the three positions by Ho, Doo and p or 9n (1894-1910) the motion of A is: o"n5 in 137^8 11848. x Aquarii. (5.4-..n.o) R. A. 22" 31 32' Decl. 4 Si' 1909.744 247^00 iooT6i .760 247.35 100.30 .763 246.68 100.52 .703 214.8 20.56 .720 215.5 20.61 1909.75 247.01 100.48 No other measures At one time Herschel suspected a ven 1910.71 215.3 20.58 A and C 1910.701 I756 84^99 .703 175-3 84.94 .720 176.3 84.48 small companion (= H 5529) but this has never been seen since and certainly does not exist. The proper motion of x Aquarii is given : Auwers o'/i4O in 219^7 Porter 0.143 in 219.7 1910.71 175-7 84.80 All the measures are of recent date. 11834. 22923. (6.9... 9. 2) R. A. 22" 29"' 53 s Decl. + 69 45' A and C (11.9) 1911.509 I46?35 97"38 .526 146.13 97-05 .529 145.95 96.51 Boss 0.139 in 214.0 11862. P 1092. (7- 5... 7-5) R. A. 22" 33 m 3" Decl. + 72 IS' AB and C (12.2) 1911.526 262?o8 3i"34 .529 261.83 3i.5i .545 262.40 31-43 TOTT C2 146.14. O6.O8 1911.53 262.10 31-43 289 Burnham: Measures of Proper Motion Stars Rejecting the measure of 1898 because it is on a single night, from the three sets of measures by A and ($, each on 3 n, we have for the proper motion of the binary system of no in s8?2 From meridian positions : Greenwich o7i22 in 75:7 11866. 22928. (8.0... 8.0) R. A. 22* 33- 10' Decl. 13 H' A and B 1908.671 311?! 3"7 .673 .692 3". I 312.2 3.98 3 79 1908.68 3"-5 3-88 This is a system of the 61 Cygni type. In the General Cata- logue I have shown from the measures of AR (1830-1902) that the apparent movement of A is : o"oi8 in 24^1 From the star catalogues we have for the proper motion of A: Stumpe 0*291 in n8?7 Porter 0.268 in 122.8 Paris 0.275 in 125 o Taking a mean of the last two for the movement of A, the proper motions of the components are A 0^272 in I23?g B 0.275 in 127.5 For an independent value of this, I have measured a faint star. A and C(i3.o) 1908.671 245io 07748 .673 245-42 98.06 .750 245.07 98.15 1908.70 1912.678 .695 .717 245.20 24493 244.30 245.66 97.00 98"54 98.94 97-88 1912.69 244.96 98.45 11869. H 1795. (10.8... 10. 9) R.A.22 b 33 m i8' Decl. + 46 43' A and B 1910.666 2i2?8 iiTSs .678 .681 213.9 216.6 "75 11.77 1910.67 214.4 11.79 A and C (10.9) 1910.666 3i?6 i6"82 .678 30.6 17.01 .681 30.8 16.69 1910.67 31.0 16.84 No other measures ; no fourth star as suspected by Hcrschel A and DM (46) 3/68 (8.5) 1910.666 i87?87 I02"68 .678 187.77 102.72 .681 187.83 102.89 1910.67 187.82 102 . 76 11877. 10 Lacertae. 8813. (S.O...IO.G) R. A. 22" 33 52' Decl. + 38 26' 1910.720 739 742 4 8?90 48.95 49-25 61.62 61.44 1910.73 49.03 61.47 The meridian positions are uncertain as to the proper motion of 10 Lacertae: Auwers o"oi3 in po?o Boss 0.009 in 180.0 The measures make the motion substantially all in R. A. but in the opposite direction. The measures of O2 and {5, 1854 to 1910, give: ofoi4 in 26s?5 11882. Espinio6. (9. 2... 9. 7) R.A.22 h 34 m 5' Decl. +48 48' 1908.518 .520 537 267.9 267.3 8"02 7.98 8.06 1908.52 267.3 No other complete measures. 8.02 11884. Ho 187. (6. i... 10.2) R. A. 22" 34" 6' Decl. + 37 7' 1908.750 .769 .788 286?5 285.7 286.2 18.77 18.65 1908.77 Probably no change. 286.1 18.78 11895. Ho 2o6. (5- 5-.. 5-5) R. A. 22" 34 56' Decl. + 13 55' AB and C (11.3) 1910.666 234?20 .678 234.38 .681 234-77 68To6 68.22 68.26 1910.67 234-45 68.18 For proper motion of AB. This from the catalogues is : Porter 0^290 in 6s?3 Glasgow 0.304 in 60.5 Paris 0.288 in 64.5 290 Burnham: Measures of Proper Motion Stars 11905. \Pegasi. (3.S-.-H-0) R. A. 22" 35'" 38' Decl. + 10 12' 1907.657 I3?93 62^92 .675 139-18 63.70 .692 139.05 63.42 .695 I39-98 63.16 A and C 1911.526 182^02 i6i"88 .529 182.00 162.06 .545 182.45 162.68 1911.53 182.16 162.21 C is SD (5) 5842. The meridian positions give: 1890.7 i8i?6 i62:'6 A. G. Stras. 11910. 12 Lacertae. 8815. (s.4...io.o) R. A. 22" 36 6' Decl. + 39 36' 1910.509 15^43 69"95 .529 15.65 69.66 .548 15-90 69.45 1907.68 139-28 63.30 The proper motion of the large star from the three |3 posi- tions (1879-1907) is: o''o7o in 79?8 From meridian observations: Newcomb o''o8o in ioo?o Boss 0.078 in 98.9 Auwers 0.067 > n IO S-5 11906. 22932. (8. 7... 9. 2) R. A. 22" 35 m 50' Decl. + 29 25' A and B 1908.750 28o?7 2o"i2 .766 281.2 20.01 .769 281.4 20.16 1910.53 15.66 69.69 The proper motion of 12 Lacertae from the measures (1881- 1910) is : Measures o"o37 in 52?8 Auwers 0.023 in 82.6 Boss 0.021 in 250.4 11924. TI Pegasi. p 1144. (3.0. ..10. 3) R. A. 22 37 23' Decl. + 29 36' A and BC 1909.742 338?83 90"9I 744 338.59 91-12 .760 338.85 90.7S 1908.76 281.1 20. 10 1909.742 28l?I 20"32 .744 280.9 20.26 .760 281.2 20.24 1909.75 281.1 20.27 A and C (n.o) 1908.750 I2?8 30^02 .766 13.1 30.06 .769 12.2 29.92 I909-7S 338.76 90.93 The proper motion of the large star is : Auwers 0^038 in i83?9 Boss 0.036 in 163.4 Newcomb 0.040 in 158.5 The change in the small star indicates a very small motion. The measures should be continued. 11930. O2477- (7-2... n. i) R. A. 22" 38 m 16' Decl. + 45 24' A and C (ii.o) 1909.400 348?78 i77"55 .438 348.50 I77-38' .458 348.55 177.63 1908.76 12.7 30.00 1909.742 12 C .& so"l4 744 12.2 30.00 .760 12.7 29.70 1909.75 12.6 29.95 No evidence of material change in AB. The other measures of C are of late date. 11907. HN.i 4 o. (6. 5... 9. i) R.A.22"35 m 5i' Decl. 5 44' A and B 1911.529 262?97 73"8i .545 262.93 74.05 .564 262.80 74.28 1909.43 348.61 177-52 C and c (12.5) 1908.400 I26?3 io"49 .438 125-5 10.29 .458 125.5 10.20 1911.55 262.90 74.05 The only other measures are my own in 1901. 1908.43 125.8 10.33 291 Burnham: Measures of Proper Motion Stars The only other measure of C is : 1880.28 350?I4 I76"2i 2n Bl These positions give substantially the same proper motion of A as that derived from the measures of AB, but in view of the number of measures, and especially the shorter time in- terval, this value at this time is entitled to much less weight. Measures of AB o''i8o in 94^8 Greenwich 0.181 in 94.1 11931. H53S9- (9-.- 9+) R. A. 22' 38 34' Decl. 4 37' A and C (12) 1910.684 347o 16*60 .701 347.2 16.86 739 345-6 16.55 11942. H 1807. (8.5... 8. 5) R. A. 22" 39 29' Decl. + 67 6' A and BC 1910.760 i88?4 23*37 777 189-0 23.07 .780 187.8 23.68 1910.77 188.4 23.37 The only other measure is that of 1899. B and C (= Hu 92) 1910.780 350?7 o"88 The proper motion of the principal star is : Schroeter 0*089 in 252?3 11952. 22941. (7. 5... 10. 2) R. A. 22" 40" 7' Decl. + 18 37' 1910.681 2&4?3 11*41 .698 265.0 11.22 .701 264.2 11.31 1910.71 346.6 16.67 A and B 1910.684 64?9 20*27 .701 65.6 20.56 739 65.4 20.59 1910.71 65.3 20.47 Only very recent measures. The magnitudes given here are by Herschel. 11936. p 450- (7.0... 9. 2) R. A. 22* 38" 40' Decl. + 38 50' A and C (12.5) 1910.742 235?7 10*37 .760 237.9 10-30 777 235-8 10.56 1910.69 264.5 11.31 The measures by 2, A and P (1830-1910) give for the proper motion of A : o"o34 in 62?8 11957. \Pegasi. H 301. (4-3---I2.3) R. A. 22" 40 42' Decl. + 1 1 33' A and C (12.6) 1907.711 I7?6o 138*32 -731 17-65 138.06 .750 17.00 138-65 1910.76 236.5 10.41 The change in C is explained by the proper motion of AB (2 2942). This is given from meridian positions: Battermann 0*027 in 2359 The measures of AC (1878-1910) give: 0^024 in i6g?8 11938. 13 Lacertae. 02479. (5.4... 10.8) R. A. 22" 38 44' Decl. + 41 ll' 1910.684 I28?5 14*77 .698 129.8 14.83 .701 129.2 14.79 I907-73 17-42 138.34 1912.810 I593 i4o"4S .813 16.42 140.56 .867 16.43 140.22 1912.83 16.26 140.41 The only other measure of this star is : 1879.52 2i?75 127733 2n P' These positions give for the corrected proper motion of the large star : 0*541 in 155! I From the catalogues we have : Auwers 0^514 in is8?9 Porter 0.541 in 158.9 Paris 0.528 in 157.2 Boss 0.545 'n '55-2 1910.69 129.2 14.80 No relative change. The proper motion of 13 Lacertae is small: Auwers 0*035 in 290?! Newcomb 0.016 in 306.9 Boss o.oii in 303.6 292 Burnham: Measures of Proper Motion Stars 11966. 02480. (7. 5... 8.2) R. A.224i m i9 s Decl. + 57 27' 1910.531 ii6?8s 30775 .548 116.70 30.46 .570 117.09 30.75 11986. p 1219. R. A. 22 h 43 m 27' Decl. 11 42' The Herschel nebula 3 50' /> fj 1219 is somewhat diffused, but brighter in the center. h 2180 and star n.pm 1909.534 I476 117722 .630 147.7 116.67 703 147-0 115-89 1910.55 116.88 30.65 No change. The proper motion of A is: Greenwich o"o63 in i8o7 11967. T 1 Aguarii. 22943. (6.0... 9. 2) R. A. 22 4i m 20' Decl. 14 41' 1910.742 n6?26 26*36 .760 117.61 25.97 777 117.08 26.19 1909.62 147.4 116.59 11997. 22947. (7. 2... 7. 2) R. A. 22" 44 54' Decl. + 67" 56' This may be a pair of the 61 Cygni type, the components having slightly different proper motions. To verify the motion of A as given from meridian positions, I have connected a faint star. A and C (ii.o) 1910.720 2o6?57 109728 739 206.04 109.44 .742 206.10 109.16 1910.76 116.98 26.17 No third star available. The measures of the small star (1831-1905) give for the proper motion of T 1 Aquarii: 0*065 in 87?7 From the star catalogues we have : Auwers 0*019 in i8o?o Hedrick 0.037 in ni.8 Boss 0.037 in 110.5 11975. H 1810. (8. 5... 10. 4) R. A. 22" 42 22 s Decl. + 57 30' 1910.531 3554 2i"o9 -548 355-5 20.69 1910.73 206.24 109.29 The proper motion is given : Schroeter 0^146 in 66?6 Groombridge 0.155 in 54.1 11998. H 3147. (9.0... 12.0) R. A. 22" 45 m 5' Decl. + 72 18' 1912.411 239?7 29*87- .427 239.6 29.36 .430 239.7 29.67 1910.54 355-4 20.89 The components of H 1810 are among the principal stars of h 2182. The DM number in Part I of the General Catalogue should be 2607 instead of 2617. 11985. T 2 Aquarii. H VI. 97. (4. 2. ..9. 5) R. A. 22" 43 14' Decl. 14 13' 1910.742 294?53 132*66 .760 294.70 132.71 .777 204.28 132.71 .780 294.53 132.33 1912.42 239.7 29.63 The only other complete measures are of late date. Taken in connection with Herschel's angle of 252?o in 1830, the larger component has some proper motion. 12008. 110482. (6. 8... 6. 8) R. A. 22" 45 m 41" Decl. + 25 45' AB and C (9.0) 1909.742 I98?50 5o"53 .744 198-50 50.72 .763 198.53 50.41 1910.77 294.51 132.60 The measures should be continued. The only reliable early measure is by Dawes, but on only a single night. Comparing that with the present position, gives for the proper motion of A: Measures o''o6o in ig6?2 Boss 0.039 in 204.0 Auwers 0.047 ' n 2 33-5 1909.75 198.51 50.55 The only other measure is that in Part II of the General Catalogue. 293 Burnham: Measures of Proper Motion Stars 12019. 15 Lacertae. f} 451. (5.1. ..12.0) R. A.. 22* 46" 37' Decl. + 42 40' A and B 1908.518 132^23 28T34 .520 132.78 28.08 .537 132.28 27.93 A and C (10.5) 1907.638 279?9 24^33 .695 279.6 24.34 .731 280.0 24.36 .750 281.0 24.17 1907.70 280.1 24.30 Probably unchanged. Measured by Doolittle in 1906. 12036. ^382. (6.0... 8.0) R. A. 22" 48 m 18' Decl. + 44 7' AB and C (10.7) 1911.720 354?8 27^41 736 355-5 27.35 -775 354-8 27.35 1008.52 132.43 28.12 The five measures of B (1888-1008) give for the proper motion of 15 Lacertae: o".i26 in 76?2 From the star catalogues : Auwers o!'oo7 in 85^9 Boss 0.106 in 81.3 A and C (11.9) 1908.518 309-89 I02':S6 .520 310.00 102.91 537 309.67 102.89 1911-74 355-0 27.37 The apparent change appears to be due to a very small proper motion in AB. Further measures are necessary to give this a definite value. Groombridge o"o2O in 246?4 Boss 0.016 in 270.0 12037. 2 2952 r*;. (7-5- -10.5) R. A. 22" 48 28' Decl. + 27 23' 1911.698 I36?8 I7?44 .720 136.9 17.45 .736 136.7 17-35 1908.52 309-85 102.89 A and D (12.3) 1908.518 227^5 127740 .520 227.85 127.92 537 227.70 127-78 1908.52 227.73 I27-70 No other measures of C and D. 12021. 22950. (5. 7... 7.0) R. A. 22* 46 40' Decl. + 61 3' , A and C (10.6) 1910.720 354-23 39"3 739 353.83 39.17 .742 3S4-58 39-12 1911.72 136.8 17.41 Probably fixed. 12038. 02(App.)2 3 8. (6.5. .-7-2) R. A. 22" 48 28' Decl. + 67 2 1 ' 1910.815 280^63 69706 .818 280.80 68.95 .838 280.88 68.96 1910.73 354-21 39- " For the proper motion of AB. Bossert o?ii6 in 69^8 A. G. Hels. 0.115 in 71.2 Boss 0.119 in 69.3 Auwers 0.117 in 71.6 12031. Ho 191. (8... 11.7) R. A. 22* 47" 53' Decl. + 30 / A and B 1007.731 g\7 3*14 -750 87.9 3-17 1910.82 280.77 68.99 Unchanged since 1875. A third star should be connected. The principal star is given a small proper motion. Schroeter o?o7o in 104^0 12042. 2 2955 rej. (7 .7 . . .11 .1) R. A. 22*48' 41' Decl. + 6 37' 1908.537 3377 22T86 .556 337-8 22.95 559 337-5 23.04 1908.55 337-7 22.95 Change doubtful. 1907.74 89.8 3-15 294 Burnham: Measures of Proper Motion Stars 12044. 22954. (9.0... 9.0) R. A. 22" 48'" 51' Decl. + 14 33' 1907.485 25? 15 38'.'63 .502 25.38 38.73 .523 25.40 38.59 12063. 22957. (8. 6... 10. 4) R. A. 22" so m 26' Decl. + 16 49' A and C (12.5) 1911.644 56^76 T3i''oi 663 57.01 131.17 698 57.02 131.62 1907.50 25.31 38.65 One of these stars has a proper motion of about o"o33. A and DM (14) 4889 1907.485 A Decl. 7o"o .502 69.8 From these positions, compared with those in A. G. Leip., it would seem that the proper motion is in B. 12053. H 974. (8.7... 9- 7) R. A. 22* 49 m 20" Decl. + 4 C n' 1911.698 87?68 43^83 .720 87.38 44.11 755 87.52 44.18 1911.67 56.93 131-27 For the proper motion of AB. A. G. Ber. 0*275 >n I26?6 12068. 16 Lacertae. 22960. (6.0... 12.0) R. A. 22" 50 55' Decl. + 40 58' A and B 1912.581 345?3 27^40 583 345-3 27.73 619 345-2 27.55 1912.59 345-3 27-56 A and C (9.0) 1912.581 47?65 62^68 583 47-53 62.89 .619 47.70 62.78 1911.72 87.53 44.03 Further measures are necessary to confirm the supposed proper motion of A. A. G. Alb. o''iio in 2i3?7 12056. 2 2956 re j. (9-.-IO) R. A. 22" 49 m 44' Decl. + o" 42' A and B 1910.490 is8?2 32*06 493 158.1 32.04 .529 158.1 31.83 1912.59 47.63 62.78 A and B appear to be moving together as there is no sensible change since 1831, while C appears to be fixed in space. The four positions of AC by 2, A and [5 (1831-1912) give for the proper motion of 16 Lacertae: 0*013 in I3?2 The meridian positions give a different direction, and dis- cordant values of the annual motion. Auwers 0*029 in 258?o Boss 0.008 in 223.3 12078. 0452- (7.0. ..ii. i) R. A. 22" 51 58' Decl. + 42 22' A and C (15.0) I9II-777 I58 9"83 A and D (13.8) 1911.777 2i2?97 85^47 .793 213.07 85.06 .813 214.07 86.22 1910.50 158.1 31.98 A and C 1910.490 278?3 68"27 .493 278.3 68.47 .529 278.2 68.16 1910.50 278.3 68.30 All the measures are of recent date. The magnitudes are from Herschel. 12058. P 383- (8.0... 12. 7) R. A. 22" 49 57' Decl. + 8 49' A and C (12.4) 1910.490 240?8 15"64 .529 239.7 15-iS .570 240.0 16.04 .586 240.0 15.88 1911.79 213.37 85.58 For the proper motion of A. Greenwich 0*049 in 78? I No other measures of C and D. 1910.54 240.1 15.68 No motion since 1877. 295 Burnham: Measures of Proper Motion Stars 12082. H 3156. (10. 9... ii. i) R. A. 22" 52 13' Decl. + 12 28' 1910.838 .856 2o8?8 298.2 17-57 298-5 17-53 1910.85 No other measures. H 3156 (A) and h 2194 1910.838 2&84 I34?9 k 2194 is small, diffused, and with no definite center. 12087. H 3157. (I0.5...H.O) R. A. 22" 52 26' Decl. + 53 42' 1910.815 37?6 15*10 This is probably the pair referred to by Herschel. It is in h 2196 which is made up principally of lorn and smaller stars. 12090. 02 536. (7-0... 7-5) R. A. 22" 52" 30' Decl. + 8 43' AB and C (9.6) 1909.589 84 28 239" 13 .592 84.33 239-04 .627 84.32 238.48 .666 84.40 239.23 1909.62 84.33 238.97 C and D(n o) 1009.666 2i8oo H5''6o .687 217.92 115-69 1909.68 217-96 115-64 From the three measures of C by O2, H2 and P (1852-1909) the proper motion of the binary is : ol'.tu in H2?2 The proper motion of the system from the star catalogues is given : 07397 '" lll 5 110.5 Porter Kustner Glasgow Paris Boss No other measures of CD. 0.397 in 0.399 in 109.9 0.408 in 112. o 0.421 in lll.O 12121. 2 2972 rtj. (9-3.-.H-7) R. A. 22' 56" 34' Decl. o 23' 1910.436 452 .400 I426 143.6 143-6 15-87 15-75 1910.46 143-3 15-79 Change is certain; probably a small proper motion in A. The complete measures are of recent date. No third star suitable. 12125. 2 Andromcdae. p 1147. (5.0. ..8. 7) R. A. 22" S7 m 5" Decl. + 42 7' AB and C (13.6) 1911.777 I9i73 9o"23 793 I9L33 90.63 .813 191.80 90.79 1911.79 1912.622 .638 .657 191.62 I02?20 I9L93 191.90 90.55 89?95 90.27 90-35 1912.63 I92.OI 90.19 No other measures of the faint star. The proper motion of the binary is given in the star catalogues : Auwers 0^041 in iog?8 Groombridge 0.065 in 99-8 Boss 0.062 in 96.5 12130. 02 485 rej. (6.0... 9.0) R. A. 22" 57- 34' Decl. + 54 35' A and B 1911.736 50o 20^75 775 777 5oo 50.8 50.9 20.81 20.73 1911.76 50.6 20.76 Some change from proper motion in A. A. G. Harv. 0^015 in 270o A and C (9.5) 1911.736 8o?43 56*41 775 79-90 56.35 777 80.35 56.60 1911.76 80.23 56.45 No other complete measures of this. There is an error of 180 in the angle of AC by Madler. 12134. P Pegasi. H 1842. (2.2...n.i) R. A. 22' 57 56* Decl. + 27 26' A and B 1910.452 2og?88 105*81 .471 473 209.43 209.80 105.01 105.17 1910.47 1910.471 473 .400 209.70 A and C 9750 97-55 97-53 105.33 255" '0 256.08 255-42 1910.48 97-53 255-53 296 Burnham: Measures of Proper Motion Stars For the proper motion of p Pegasi we have: Measures of B o"243 in 52?! Measures of C 0.224 in 47.8 Auwers 0.218 in 52.5 Greenwich 0.218 in 52.4 Newcomb 0.236 in 55.1 Boss 0.233 in 55.2 The measures of the small stars should be continued. 12170. 02 488 r*/- (7.0.. .10.7) R.A.23 h i m 3i s Decl. + 19 56' 1910.780 .838 .856 334-2 333-6 335-2 14-05 14.00 1910.82 334.3 No sensible change since 1865. 13-97 12171. P 1025. (8.0... 10.8) R. A. 23" i m 38' Decl. + 12 l' AB and C (11.9) 1909.760 83?9S 2i'T75 .763 .780 .782 83.75 83.94 84.24 21.56 22.14 21.85 1909.77 83.97 21.83 h 2214 and star 12. 7m 1909.760 227?45 I2o"25 .763 227.05 119-95 .780 228.07 119.64 .782 226.90 120.15 1909.77 227.37 The last is 4 m exactly following p 1025; small, diffused and some brighter in the middle, and bisection fairly accurate. 12172. 22976. (8.3... 10. 2) R. A. 23" i m 38' Decl. + 5 57' C and D (8.8.. .12.2) 1908.750 247?8o 132712 .785 247.97 131-98 .788 248.15 131.12 .804 247.90 I3I-57 1908.78 247-95 131-70 This measured to show whether or not C has any proper motion. The apparent motion of A from the measures of AC (1828- 1905) is : 0^054 in 253? i 12179. 4 Andromedae. H 1849. (5. 6. ..10.6) R. A. 23" 2 m io" Decl. + 45 44' 1909.818 .821 .838 346?8o 346-63 347-18 47''86 47-86 47.84 1909-83 346-87 47-85 As the first measure of this is on a single night, relative motion is uncertain. The measures should be continued. The proper motion of A is small : Auwers o''o3i in I93?9 Groombridge 0.054 m 210.2 Boss 0.030 in 189.9 12180. H 979. (8.5... 10.2) R. A. 23" 2 21 s Decl. + 21 28' I9H.583 .644 .663 2i6.g 217.8 218.0 18*48 18.30 18.47 1911.63 217.6 18.42 Probably unchanged. Herschel's distance in 1830 was too small. 12184. 22984. (7.5...IO.O) R. A. 23" 2 m 58' Decl. + 70 i' A and C (13.0) I9IL545 564 .567 8i?67 75"4i 81.63 74-32 80.90 74.60 1911-56 81.40 74-78 For verification of the proper motion. Schroeter o"o68 in 147^8 12196. nCephei. 02489- (S-2---7-S) R. A. 23" 4" 5* Decl. + 74 44' AB and C (12.8) 1911.602 240^90 s8"57 .622 .625 .644 240.37 239.97 240.43 58-23 58.88 58.59 1911.62 240.42 58-57 The only other measures of the Herschel companion are my own. Later observations are necessary for correction of the proper motion of it Cephei. Auwers o"o37 in i8o?5 Newcomb 0.033 in 164.8 Boss 0.028 in 154.8 297 Burnham: Measures of Proper Motion Stars 12202. 2 Cassia feiae. 8823. (6.0... 9. 4) R. A. 23" 4 37' Decl. + 58 41' 1912.675 i62?89 167" i i .695 162.95 167.07 .698 162.90 167.13 AB and D 1894.79 28i?3 47^30 in Ho 1906.68 279.7 50.27 2n Doo 1908.27 280.54 49-75 3n P 1912.69 280.34 50.13 3n p 12222. H 3176. (9. 2... 9. 2) R. A. 23" 6 m 52' Decl. + 1 1 54' 1910.529 i644 26*94 .570 164.5 26.84 .586 164.5 26.93 1912.69 162.91 167.10 The P measures (1881-1912) of the small star, which is too faint for the DM, give for the proper motion of 2 Cassiopeiae: 0*041 in I52?o This will be confirmed hereafter by observations of the 20" companion first measured in 1904. The motion from transit positions is very uncertain : Auwers 0*007 in I73?6 Davis 0.009 in 175.0 Groombridge 0.018 in 319.8 Boss 0.014 in 344.5 12205. 0852. (7.0...) R. A. 23" 4 51' Decl. + 25 52' A and BC 1912.504 283?07 58"36 .507 282.55 58.15 .526 282.63 58.17 1910.56 164.5 26.90 No early measures of this. h 2214 and star 12.6 m 1910.529 227?2 120*9 .586 227.2 120. 1 1910.56 227.2 120.5 h 2214 is about 15' n of H 3176. 12229. 22992. (7. 5... 9. 2) R. A. 23" 7 24' Decl. + 39 21' A and B 1910.684 285^3 14*43 .698 285.2 14.03 .701 285.1 14.15 1912.51 282.75 58.23 There is no apparent change in the position of the double companion since 1881. 12214. Ho 197. (8.0... 8. 3) R. A. 23' 5 44' Decl. + 37 24' AB and C (9.4) 1907.879 328?42 4i"i3 8.460 328.48 40.76 8.482 328.27 40.98 1912.675 328.12 41.05 .695 328.13 41-02 .698 328.00 40.77 AB and D (10.0) 1907.879 28o?48 49*78 8.460 280.48 49-63 8.482 280.67 49-84 1912.675 280.40 50.08 ,695 280.28 50.16 .698 280.33 50.15 C is DM (37) 4084. The measures of the distant stars are conflicting in distance, and change is uncertain. The follow- ing are all the measures : AB and C 1894.79 3295 42*56 in Ho 1906.68 329.1 41.67 2n Doo 1908.27 328.39 40.96 3n P 1912.69 .uS.oS 40.95 3n P 1910.69 285.2 14.20 Apparently without change. A and 0(13.5) 1910.684 34395 50*72 .701 343-30 51.51 .703 342.65 50.94 1910.70 343-30 51-06 For the proper motion of A. Greenwich o"o84 in 101?] 12230. 2 2991 n?./. (7.0.. .10.0) R. A. 23' 7 24' Decl. + 10 25' 1911.813 358?i 32*92 1.835 358.3 33-59 1.870 359-1 33.06 2.810 358.7 33-45 2.813 359-3 33-47 2.829 358.8 33-70 1912.33 358.7 33-36 No early measures. 298 Burnham: Measures of Proper Motion Stars 12234. 22993. (7.0... 7- 8) R. A. 23" 7 47 s Decl. 9 35' A and C (9.1) 1908.556 115^26 I2i?88 573 II5-4S 122.50 597 115-70 122.49 1908.58 "5-47 122.29 C is SD (9) 6152. From the measures of AC the proper motion of AB is : 0*46 1 in 89?4 From the catalogues : Paris 0^569 in 103^0 Boss 0.558 in 94.7 Later measures of AC: 1911.663 iT585 I2i"25 .720 115.63 121. ii .736 115.60 121.40 1911.71 115-69 121.25 12236. H 981. (9.0... 12. 5) R.A.23"7 m si Decl. + 2 13' 1908.482 28i?o i7':8s 559 279.4 17-89 573 281-4 17-94 1908.54 280.6 17.89 This pair was wrongly identified in 1905, and the measure given in Part II of the General Catalogue belongs to another star. 12237. p 714. R. A. 23" 7 m 56' Decl. 3 17' h 2220 is about 28' distant nf; diffused, and little brighter in the middle. h 2220 and SD(3)55o8 1910.589 83?! i6s"86 .608 82.6 166.35 1910.60 82.8 166.10 12247. H 983. (8. 7... 9. 2) R.A.23 h 8 m 35" Decl. + 31 7' 1910.684 .698 .701 158.1 157.4 l6"83 17.04 16.68 1910.69 157.3 16.85 There is a 13. 5m star, 318^8 : 20^7 from A 12257. ip 1 Aquarii. 1220. R. A. 23" 9 36" Decl. g 44' BCand E (9.0. . .12.5) 1908.597 358?i i8".3i 633 357-7 671 357-3 18.46 18.29 1908.63 357.7 18.35 Rejecting my single measure in 1877, the three positions give for the proper motion of BC, which is exactly the same as that of ty 1 Aquarii: 0^375 in 89^4 From meridian positions, we have for ty 1 Aquarii: Auwers o"35o in ox>?8 Boss 0.367 in 92.0 Porter 0.348 in 92.1 Paris 0.378 in 72.6 12265. 22995. (7- 7... 8.0) R. A. 23" io m 24' Decl. 2 15' 1910.684 .701 703 31.2 32-3 29.5 4-89 4-95 1910.70 31-0 4.87 No change; the position-angle by 2 is too small. The Hd pair could not be found. 12267. H 3181. (P.I...IO.O) R. A. 23" io m 27" Decl. + 52 19' A and B i8?8 19-3 18.9 1909.742 744 .760 22717 22.18 22.21 1909.75 19.0 22.19 A and DM (52) 347 (9-o) 1909.742 49?20 I53'8i 744 .760 49.10 154-05 48.78 153-89 1909.75 49-03 I53-92 The positions of the distant star seem to indicate that if A has any proper motion at all, it is in a direction opposite that given in A. G. Harvard as o"ioi in ox>?o. 1875 493 I52"3 A. G. Harv. 12272. H 3180. (9-4- -.12. 2) R. A. 23" io m 37' Decl. + 9 37' 1908.636 .652 .671 263.7 263.4 23.01 23-05 23-07 1908.65 264.0 23.04 No other measures. Herschel's angle in 1830 was 253^1. 299 Burnham: Measures of Proper Motion Stars 12274 182. (8. 7... 8. 9) R. A. 23" io m 52' Decl. 14 28' AB and C (12.5) 1908.750 7i?34 76*10 .824 71.12 75.46 .826 71.28 75-54 .882 71.83 75.80 For the proper motion of AB. No other measures. Auwers o"o23 in 70?! Boss 0.047 in 87 6 12290. f}8o. (8.2... 9. i) R. A. 23" I2 m 45' Decl. + 4 45' AB and C (10.8) 1906.753 2?o I03"87 6.755 1-7 104.03 7.562 2.1 I03.8l 7.638 1.8 104.01 7.657 1.7 103.98 1908.82 71-39 75-73 1910.760 70?83 77*24 .838 69.31 77-53 .931 70.18 78.04 1910.84 70.11 77-6o I have given in the General Catalogue the proper motion of AB from the measures of C (1898-1903). A continuation of these measures will reduce the error. 1*306 in I99?o AB and D 1910.760 i67?20 147*35 .780 167.10 146.97 .818 166.70 146.912 1907.27 1.86 103.94 1910.838 i?o8 104*14 .856 0.73 104.15 .893 i. 21 104.03 1910.86 i. 01 104.11 AB and D (9.5) 1906.753 33i4 188*55 6.755 331-3 188.10 7.638 331-2 188.88 7.657 331-3 188.66 1910.79 167.00 147.08 With the position of D in 1902, the proper motion of A is : i"353 in 207^2 At present, because of the longer time interval, the value from the measures of C should be the best. Porter 1*302 in 201 ?2 Romberg 1.297 in 200.4 Radcliffe 1.331 in 202.5 12285. 8 Andromedae. p" 7'7- (5-O...I3-O) R. A. 23" 12 1 1' Decl. + 48 22' A and C (10.3) 1908.826 130^61 219*28 .845 131-04 219.37 .862 130.95 219.41 1907.20 331.30 188.55 1910.838 33i?i5 190*12 856 331.00 189.50 .893 331-35 190.08 1910.86 331.17 189.90 From all the measures of the faint stars (1891-1910) we hav for the proper motion of the binary system : AC R. A. + 0*414 Decl. 0*032 AD 0.468 0.113 + 0.441 0.072 Therefore the corrected proper motion of 80 is : 0*447 in 99-3 Some of the values from the catalogues are : Stumpe 0*534 in IO23 Boss 0.509 in 101.2 Porter 0.480 in 100.5 Paris 0.520 in 103.6 12296. 96 Aquarii. H 5394- (6. 3 . . . 1 1 . 2) R. A. 23* 13 io' Decl. 5 47' 1910.742 2i?9 10*46 .760 23.6 10.55 .777 22. S 10.44 1908.84 130.87 219.35 The following is the only prior observation : 1880.28 130^67 219*41 2n Bl The proper motion, if any, of 8 Andromedae is small and uncertain : Auwers 0*024 >" "98 Boss 0.038 in 81.0 12289. 95 Aquarii. Ho 199- (5-2---"-5) R. A. 23" i2 m 43' Decl. 10 16' A and C (13-0 1912.562 23i!35 129:63 .695 230.40 130.11 .752 230.10 130.52 1910.76 22.7 10.48 No suitable third star for proper motion. B has the sam motion as the bright star. Auwers o"i66 in 89^3 Paris 0.191 in 90.0 Boss 0.193 in 94.7 1012.67 230.46 130.06 300 Burnliain: Measures of Proper Motion Stars 12304. o Ccphd. 23001. (5. 2. ..7. 8) R. A. 23" 13'" 41' Decl. + 67 27' A and C (13.1) 1912.408 3?oo 45*54 .411 4.70 45.50 12320. H 3185 = h 2234. R. A. 23" is" 1 36' Decl. + 8 14' h 2234 and star 13. 3m 1909.760 i63?3 21*55 .763 161.8 21.41 .427 3.00 45.62 1909.76 162.5 21.48 1912.41 3-87 45-55 Xo other measures of C. The small relative motion in AB implies a system of the 61 Cygni class. For the proper motion of the large star we have : Auwers 0*054 in 83^6 Schroeter 0.059 m 85.1 Boss 0.066 in 75.0 There is no star in the nebula. 12325. 64 Pegasi. P 718. (5.0... 8. 7) R. A. 23" 16' 3" Decl. + 31 9' AB and C (13.0) 1912.504 I46?75 112*90 .507 147.07 112.89 .526 146.90 112.80 12305. O2(App.)244. (6.0... 9.3) R. A. 23" I 4 m 3' Decl. + 47 43' 1910.473 301^05 84*56 .509 300.97 84.64 .531 301.18 84.45 1912.51 146.91 112.86 For the proper motion of the binary system. From the catalogues we have: Auwers 0*020 in 144^2 Boss 0.023 'n 156.8 1910.50 301.07 84.55 The proper motion of the principal star from all the meas- ures to 1910, and from meridian positions, not cited in the Genera! Catalogue is: Measures o"225 in 78?o Auwers 0.174 in 73.3 Boss 0.206 in 81.3 For a further independent value of this motion, I have 12332. 23007. (6. 5... 9-5) R. A. 23" 16 46' Decl. + 19 54' A and C (n.o) 1909.802 3ip?27 78*23 .818 319-25 77.98 .821 319-26 78.59 measured a third small star: A and C (n.o) 1910.509 104^25 I36"47 .548 104.37 136.41 1909.81 319.26 78.27 1911.602 319^20 78*79 .622 318.90 78.65 .644 319-01 78.78 1910.53 104.31 136.44 12317. 23006. (8. 5... 9.0) R. A. 23" is m 24' Decl. + 34 47' A and B 1912.465 i6s?2 s'.'69 .507 165.0 5.62 1911.62 319.04 78.74 These measures do not sensibly change the proper motion of A given in the General Catalogue from the measures to 1905. With the later positions this motion is : 0*287 in 86? i The motion from meridian positions appears to be too large : Paris 0*337 in po o Boss 0.319 in 93.4 1912.49 165.1 5.65 One of the components of 2 3006, presumably the brighter one, has a proper motion of 0*023 in 276?!. To make certain which it is, I have connected a faint star. A and C (11.2) 12336. H 3188. (9.0... 11. 5) R. A. 23" I7 m 8' Decl. + 11 47' 1910.490 249?! 20*87 493 249.3 21.20 .570 247.3 20.97 .504 18.68 78.18 507 18.73 78.09 I9IO.52 248.6 21. OI No early measures. About 4'" / H 3188, same declination, is 1912.49 18.71 78.06 A 2242. The Rosse nebula near this was not seen. 20 301 Burnham: Measures of Proper Motion Stars h 2242 and DM (11) 5002 (9.5) 1910.586 263^28 127*40 .589 264.02 126.68 1910.59 263.65 127.04 There is an error in the Strasburg R. A. I897-93 2637 126^60 Kobold. 12338. H 5397. (7-0... 8.3) R. A. 23' 17 24' Decl. 15 8' 1910.608 .627 .644 337-15 337-23 336.98 65"73 65.82 65.56 1910.63 337-12 65.70 One of these stars has some proper motion. From the measures by Gla and (J (1892-1910) the apparent proper motion of the larger star is : o"i28 in 230?4 A third star should be connected with A or B. 12343. 2 3oio. (8.o... 8. 7) R. A. 23" 17 45' Decl. + 45 8' B and C (12.2) 1910.605 I04?8 27^75 .608 104.5 27-93 .628 104.7 28.57 1910.61 104.7 28.08 C not moving with the others. The measures are too recent to give an accurate value of the motion of AB. Stumpe o"i72 in 95?o Argelander 0.191 in 93.0 Kustner 0.167 in 98.2 Porter 0.169 in 90.0 12351. H 5308. (9.4... 9.6) R. A. 23" 19 2" Decl. 17 54' 1908.633 .671 -75 4?o 3-4 3-1 29-43 29.16 29-40 12354. 4 Cassiope iae. (5. 2... 8. 5) R. A. 23" 19'" 30' Decl. + 6 1 37' A and C (9.5) 1912.526 257?6o 2I5"J3 .545 258.15 215.11 .562 258.42 215.05 1912.54 258.09 C and D (10.5) 1912.526 37?o -545 38-6 562 37-7 215-13 9-03 9-58 1912.54 37-8 9-41 The only other measures are my own. The proper motion of 4 Cassiopeiae is uncertain : Auwers o''oi7 in 158?! Groombridge 0.027 m 125.6 Newcomb o.oio in 196.8 Boss 0.014 in 123.5 12361. H 3193. (9-5-. -io. i) R. A. 23" 20 m 2' Decl. 12 18' 1908.573 .633 .636 217.8 218.5 34-34 34-55 34-56 1908.61 218.2 Only the measures of 1892. 34.48 12363. Ho 489. (8.0... 8.0) R. A. 23" 20 4' Decl. + 27 3' AB and C (7.5) 1910.608 .627 .644 194-85 194.94 63.37 63.20 1910.63 194-87 63.27 No change in the wide pair since 1875. h 2240 and star 10.5 m 1910.586 27I?2 10l7s 270.6 100.5 .608 .644 271.7 102.9 1908.68 3-5 29-33 This is SD (18) 6306. The place in Part I of the General Catalogue is substantially correct. No other measures. 12353. H 3192. (9.4-- -9-7) R. A. 23' I9 m 27' Decl. 17 35' 1908.633 .671 -750 n6?6 116.3 116.6 27:30 27.23 26.96 1908.68 X" other measures. 116.5 27.16 1910.61 271.2 101.6 h 2240 is about 40' s of Ho 489. 1887.80 27i?3 102^8 Eng 12365. H 1877. (12.4. ..14. 8) R. A. 23" 20" 1 6' Decl. + 4 1 52' A and B 1908.482 3574 2oTi2 575 .636 356.0 357-0 20.44 19-85 1908.56 356.8 20.14 302 Buriihani: Measures of Proper Motion Stars II 1877 (A) and It 2241 1908.444 243?3 so"o7 .482 243.6 50.38 1910.720 3i303 2o"o6 739 312.50 19.68 .760 313-28 19.74 .518 243.4 50.66 1910.74 312.94 19-83 1008.48 243.4 50.37 This is a well known planetary nebula (Dreyer 7662) with the minute star in the center, which is characteristic of all nebulae of this class. The central star was rated 15 m in my measures at Mt. Hamilton. This, like many of the central stars in the planetary nebulae, and similar attendants to bright stars, is a test of atmosphere rather than aperture, and The proper motion of A is uncertain in direction and amount; I have therefore connected a third faint star. A and C (12.1) 1007.351 202?9 46^88 .444 203.3 46.37 .463 203.0 46.71 at times is beyond the reach of the largest telescopes. On the occasion of the foregoing measures it was not well seen owing to the unsteady condition of the air. The prior meas- ures of h 2241 and the principal star-of H 1877 will be found in Pub. L. O. II p. 167. There is no suggestion of any change 1907.42 203.1 46.65 1910.720 203so 46^63 -739 202.93 46.28 .760 203.48 46.23 in the last fifty years. 12366. 866485. (6. 7... 12. 2) R. A. 23 20 m 16' Decl. 22 24' 1908.671 I3i?3 5^03 .826 129.6 5.15 1910.74 203.30 46.38 A. G. Chris. o"o26 in p6?7 Battermann 0.013 in 40.9 Schroeter 0.026 in 57.0 Boss 0.053 in 40.9 1908.75 130.4 5-09 The proper motion of the large star is given : Boss 0*036 in 8s?2 12369. v. Piscium S 830 (5 o 10 6) 12381. 23014. (8. i... 10. 4) R. A.23"2i m 52" Decl. + 10 29' 1907.540 28o?2 8"io .562 281.8 7.91 .657 281.7 8.01 R. A. 23" 2o m 4 6 S Decl. + o 36' A and B 1907.540 344 13 i6o'/9i 559 344-25 161.33 .562 344-25 161.05 I907-59 281.2 8.01 There appears to be a slight increase in the distance. 12384. O2(App.)246. (7. 3... 8. 2) 1007-55 344-21 161.10 For the proper motion of the principal star. Measures of AB o"i69 in 152^0 Auwers 0.109 in 144.7 A. G. Nice. 0.119 in 148.9 R. A.23"2i m s8 s Decl. + 22 55' A and B 1907.810 ii433 86^74 .845 114.23 86.80 .865 114-45 86.80 Boss 0.124 ' n J36-5 B and a (13.2) 1907.540 I53?7 75^92 .675 154.2 76.50 1907.84 114-34 86.78 1911.602 ii453 86"8i .622 114.41 87.03 .625 114.70 87.48 731 153-6 76.00 1911.62 114-55 87.11 1907.65 153.8 76.14 No other measures of the small star. 12372. (5386. (6. 5... ii. 9) A and C (10.9) 1907.845 I56?38 I35"47 7.865 156.68 135.82 8-479 156.47 I35.5I R. A. 23* 21 13' Decl. + 70 i' A and B 1907.351 3i36 I9"9i .444 313-2 19-77 .463 312.8 19.72 1908.06 156.51 135.60 B and C 1907.845 I9535 92"4r 7.865 195-68 92.02 8.479 195-93 92.57 1907.42 313.2 19.80 1908.06 195.65 92-33 303 Burnham: Measures of Proper Motion Stars 1911.602 io645 92*93 .622 195.83 91-68 .625 i95-8o 92.43 12411. 23022. (8.0... 9. 7) R.A.23 h 25 m 9' Decl. + 57 45' A and p 1151 (9.6) 1910.815 i89?70 ii6"8o .818 189.73 117.16 .838 189.98 116.96 1911.62 196.03 92.38 The third star is connected to get hereafter the separate proper motions of the large stars. This is given by Rechen- berg: A 0^067 in iis?5 B 0.020 in 310.5 The apparent motion of A from the measures of B (1875- 1903) 's : 0*122 in n6?o 12393. H 311. (10. 7.. .11. 8) R. A. 23* 22 57' Decl. + 16 40' A and B 1909.534 289?! 2i?6o .630 291.4 21. 18 .703 291.7 21.79 1910.82 189.80 116.97 No change since 1889. 12415. O2 498 rej. (7-2...io.o) R. A. 23" 25 38' Decl. + 51 45' 1910.684 244?3 171'oS .698 243.4 17-04 .701 242.8 17.18 1910.69 243.5 J7-IO The proper motion from A. G. Harvard of o''o75 in 90 is probably incorrect, as the distance of the lorn star should in- crease more than 3" since 1866. 12434. V 60, App. I. (6.4... 6. 5) R. A. 23" 28 i ' Decl. + 59 47' As it is uncertain which, if only one, of these large stars has the proper motion, I have measured a faint star from each. A and a (10.2) 1910.471 136^07 I35TI9 -473 135-95 135-00 .548 135-93 135-10 1909.62 290.7 21.52 H 311 (A) and h 2247 1909-534 229?3 145:49 .630 229.6 145-36 .703 229.0 145.31 1909.62 229.3 145-39 The only other measures, in 1904, are given in the General Catalogue, h 2247 is the object referred to by Herschel in his note on H 311. 12398. 11987. (9.5... 11. o) R..A.23 I '23" 1 44 < Decl. + 31 34' 1910.452 28i?o 13749 .473 281.8 13.50 .586 282.9 13.41 1910.50 I35.98 135-10 B and b (n.8) 1910.471 309^23 82^63 -473 309.12 82.09 .548 309-47 82.69 1910.50 309.27 82.47 The apparent motion of A from the measures of AB (1835- 1904) is: 0^091 in 78?4 No proper motion found in the several star catalogues examined. 12441. p 388. (6.5... 12.0) R. A. 23" 28 52' Decl. + 37 22' 1908.520 333-1 20^33 575 333-4 20.17 594 333-4 20.24 1910.50 281.9 13.47 h 2246 is 20' tip H 987; faint, diffused and small. h 2246 and star 13. 5m 1910.452 I78?2 4 1 To i 12400. H 3197. (9. 7... 9.8) R. A. 23" 23" 51' Decl. 17 57' 1908.633 309?3 8T20 .671 308.9 8.19 .750 307.8 8.29 1908.56 333-3 20.25 Apparently a little change from proper motion. Nothing found in the star catalogues referred to. 1908.68 308.7 8.23 Apparently unchanged. 304 Burnham: Measures of Proper Motion Stars 12465. H 316. (6. 9... 10. 8) R. A. 23" 31'" 27' Decl. 13 44' I909-534 570 .666 94o 93-0 93.2 33"o7 32.78 32.80 1909.59 93-4 32. h 2261, which is 77' / and 7' of H 316, is fairly bright in the center. h 2261 and star 12. 6m 1909.534 224 ?43 I55"23 .570 224.65 153-56 1909.55 224.54 154-39 12467. H 3208. (9.5... 9.6) R. A. 23" 31 35" Decl. + 8 50' 1907.657 673 .675 153-8 153-4 1175 12.06 1907.67 No other measures. 153.7 11-92 12468. O2 500. (6. i... 7.0) R. A. 23" 31 40 Decl. + 43 46' AB and C (10.7) 1912.583 335io "5"87 -619 334-93 116.13 .622 334-96 115-52 1912.61 334-50 115.84 No other measures of C. The close pair is a long period binary. The only proper motion found for the large star is the following : Greenwich o"o38 in ioo?5 12479. 23028. (7-0... 9. 5) R. A. 23" 32'" 37' Decl. + 34 22' 1911.471 .509 .529 202?6 203.8 202.7 17.34 17-42 1911.50 203.0 17.41 From six positions by 2, A, En, Hu and P on 21 n (1829- 1911) the motion of the principal star is: 0*028 in 224?5 12481. H 5411- (9-4-. -9-6) R. A. 23" 32 46" Decl. 2 46' 1907.657 .673 .675 4i?7 41.1 41.6 16728 16.49 16.44 1907.67 Probably unchanged. 41.5 16.40 12495. Espini49- (8. 3... 8. 5) R. A. 23" 34"- iS" Decl. + 63 39' 1907.636 .638 -695 I20?7 121. i 121. 8 5.65 5.53 1907.66 121. 2 No other complete measures. 5.66 12497. v. Andromedae. H i R. A. 23" 34 30' Decl. + 43 40' A and B 1909.742 I9i95 192.23 192.28 .744 .760 (4.3...ii.o) 46.90 46.91 1909.75 192.15 A and C (n.o) 1909.742 294?38 .744 204.33 .760 294.29 46.76 ios'.'4i 105.57 105.58 1909.75 294.33 105.52 From the three sets of measures of the small stars (1879- 1909) we have the proper motion of A : AB R. A. + 0*091 Decl. o"oi3 AC 0.077 0.017 + 0.084 0.015 Hence the most probable motion of A is : oToSs in loo? i From transit positions : Newcomb o?o88 in io6?l Auwers 0.075 m 110.3 Boss 0.083 in 106.9 12501. Ho 303. (8.0...H.O) R. A. 23" 34 m 45' Decl. + 19 42' A and C (11.2) 1912.504 3?33 I02?i2 507 3.28 101.77 .526 3.07 101.94 1912.51 3-23 101.94 305 Durnham: Measures of Proper Motion Stars The proper motion of the principal star is said to be : A. G. Her. o"22O in 74^2 No other measures of C. 12510. P 389- (7- 7-.. 8.2) R. A. 23' 35 18" Decl. + 3iS4' AB and C (12.8) 1908.692 $i?7 23721 9.666 52.0 23.31 23-34 9.706 52.6 1909.35 52-1 23.29 No material change in this since 1881, and it is therefore certain that the binary has no sensible proper motion. 12517. O2503. (7- 2... 7- 8) R. A. 23" 35" 59" Decl. + 19 3' A and C (13.8) 1911.644 233^46 3872I .663 233.38 37-86 .720 233.98 37.52 1911.67 233.61 37.86 Very faint star for the proper motion of AB. No other measures. A. G. Ber. 0^103 in 237?o 12523. eo* Aquarii. $279. (S.D...II.O) R. A. 23' 36" 30' Decl. 15 12' 1910.760 .818 .838 8 5 !8 84.8 85.0 5'-77 S-34 5.38 1910.81 85.2 S-SO No third star near enough. The companion is moving with the other. The proper motion of the large star is : Auwers 0^091 in I3i?4 Boss 0.106 in 124.6 12536. Espin 150. (9. 8... 10. 7) R. A. 23' 38"' 24' Decl. +64 23' 1907.807 .810 .845 33-0 3-2.1 33-9 3.23 3.76 3-23 1907.82 33.0 Krror of 180 in angle by Ks|.in. 3.41 12538. II 3_>n. (8. 9... 9.0) R. A. 23" 38 50' Decl. + 3 & 1910.586 .589 .605 82^65 83.05 82.86 48.41 48.43 1910.59 82.85 48.24 One of these stars has a proper motion of about o'.'29 in 238" ( 180). The measures should be continued, and a third star connected. h 2267 is i m 40" directly / H 3211. h 2267 and star lo.8m 1910.589 I04?5 189"! 12552. 2 3039. (7- 3... 9-7) R. A. 23" 40'" 49" Decl. + 27 45' A and B 1910.605 33?2 32^41 .608 .628 33-0 33-2 32.92 32.81 1910.61 33.1 32.71 There is no third near star for the micrometer. A and DM (27) 4621 1910.32 AR. A. 53? 34 A Decl. 46^7 1875 53.35 48.1 A. G. Camb. These positions tend to prove that the proper motion of A is in Declination, as shown from the measures of AB, and not in R. A. as given from meridian positions. Measures of AB 0*038 in 174^0 Kustner 0.026 in 272.1 12559. P 727- (7.0... 12. 5) R. A. 23* 41 26' Decl. + 24 55' 1912.755 .791 -793 3I4.S 316.1 16.65 16.88 1912.78 315-6 16.82 No change in the position of the small star unless a small advance in the angle. 12561. P 390. (8.3...H.8) R.A.23'4i n '33' Decl. +48 38' 1911.698 775 777 I9II-75 Change uncertain. 232.1 232.4 17.00 16.90 17.06 306 Durnliain: Measures of Proper Motion Stars 12563. 23041. (7. 3... 8.2) R. A. 23" 41'" 45' Decl. + 16 25' A and B I907-597 35i5 63"?8 .657 35I-S 63.95 .673 351-4 63.87 h 2265 and star 1 1 . 9 m 1909.703 I04?8 70" I .706 103.7 71-3 .760 105.8 69.8 1909.72 104.8 70.4 This is about 1*4 /> "2 3040. A prior measure gives : 1868.78 I04?8 7177 in Hd 12573. O2 507. (6. 8... 7. 5) R. A. 23" 42-" 51' Decl. + 64 13' A and B 1908.711 266?9 o"67 .750 269.5 0.64 .769 270.6 0.64 1907.64 351.47 63.87 A and C (8.1) 1907-597 352i 67717 .657 351-8 67.46 -673 352.0 67.16 1907.64 351-97 67.26 These positions with the three prior measures of A and BC (1832-1907) give for the apparent proper motion of BC: o'.'oox) in I28?2 From meridian positions: A o"o3i in 33?6 A. G. Ber 0.040 in 20.7 Rechenberg BC 0.106 in 124.4 A. G. Ber 0.096 in 118.5 Rechenberg It is at least probable that the change is wholly due to the motion of BC. 12564. 2oPiscium. 8835. (5.8... 8. 6) R. A. 23" 41 46' Decl. 3-26' A and B 1911.663 284?88 I73"22 .720 285.25 172.70 .755 285.00 172.74 1908.74 269.0 0.65 AB and C (7.8) 1908.709 352?9S 49^27 .711 352-43 49-37 .728 352.42 49.15 1908.72 352-6o 49.26 C is bright enough to have some motion, but, if any, it is very small. The measures of O2, A and p (1847-1908) give for the apparent motion of AB : Measures o"oig in IO4?7 Greenwich 0.027 in np.o 12575. 6 Cassiopeiae. O2 508. (5. 7... 8. 2) R. A. 23" 43"' o 1 Decl. + 6i33' A and C (10.8) 1912.622 309? 30 62?25 .638 309.20 62.42 -657 309.25 62.59 1911.71 285.04 172.89 A comparison of the position by South in 1824 with the measures of 1900 and 1911, implies a motion in A of o"o2 in 32?7, but owing to the uncertainty of the early distances, and the possibility of some motion in B, this result should be con- firmed by further observations. I have therefore connected a faint star with B. B and C (12.5) 1911.775 277^89 52^35 777 278.10 52.02 .813 277.73 52.17 1912.64 309.25 2.42 No other measures of C. The principal stars appear to have a small common proper motion, with no sensible relative change. Auwers o"oig in 238?7 Groombridge 0.035 in 224.2 Boss o.oio in 246.6 12581. H 5423- (6.0... 12.4) R. A. 23" 43 m 37' Decl. 26" o' 1910.627 309?3 13*45 .681 308.8 12.83 .760 308.8 13.49 1911.79 277.91 52.18 From the star catalogues : Auwers o7o72 in 87% Boss 0.095 in 86.4 12567. 2 3040. (9.0... 9.0) R. A. 23" 42 m o' Decl. + 9 29' 1909.725 2i8?o 4:39 .742 218.2 4.37 .744 218.0 4.43 1910.69 309.0 13.26 The prior measures of this pair are discordant. Not in Boss' General Catalogue. 1909.74 218. i 4.40 307 Burnham: Measures of Proper Motion Siars 12593. H 3 22o. (9. 5... 9-6) R.A.23 45 m i5' Decl. + l45' 1907.657 .673 .675 I8?2 18.9 18.2 32772 32.78 32.64 1907.67 18.4 Probably no real change. 32.71 12608. p 996. (6. 8... ii. 7) R. A. 23" 46" 34' Decl. + 74 S3' A and C (9.0) 1907.845 i3i97 163*20 .865 .867 131.78 131-63 162.84 163.21 1907.86 131.79 163.08 With the measures by Engelhardt in 1894, we have for the proper motion of AB : 07325 in 79-7 The proper motion of the bright star is given in the cata- logues : Greenwich 0*336 in 82 ?4 Porter 0.288 in 81.8 Boss 0.333 in 81.0 Later measures: 1910.644 i3i7o 162^50 .660 131-83 162.92 .666 132.00 162.89 1910.66 131-84 162.77 12615. O2s". (6.8... n. o) R. A. 23" 47 8' Decl. + 60 2' A and C (n.o) 1911.698 I29?7S 69*22 .720 -736 129.95 130.17 69.45 69.19 1911.72 129.96 69.29 For the proper motion of AB. There is a 14 m star near A: 1911.72 39?4 36*02 The motion of A is uncertain from the meridian observa- tions : Greenwich 0*012 in 94?8 Battermann 0.024 > n 209.6 A and P 1153 (AB) 1911.698 245?88 176730 .720 245.72 176.16 736 245-90 J76.79 1911.72 245.83 176.42 No change in this since my measures in 1889. 12618. O2(App.)25i. (6. 3... 9.0) R. A. 23" 47"' 31' Decl. + 50 51' A and B 1910.720 20o?s8 43*65 -739 -742 200.33 200.70 43-95 43-54 1910.73 200.54 A and C (ii.i) 1910.720 129? 50 .739 128.00 .742 129.33 43-71 50*10 50.32 50.02 1910.73 129.24 50.15 Change from proper motion of A. The measures of AB (1875-1910) give: Measures 0*076 in 83^2 Greenwich 0.066 in 79.6 12639. 23046. (8.0... 8. 5) R. A. 23" 50 15' Decl. 10 10' A and B 1909.744 .780 .782 25L4 250.7 3-19 3." 1909.77 251-5 3-14 As this appears to be a pair of the 61 Cygni type, I have connected a very faint star. A and C (13.0) 1909.780 232^10 114721 .782 232.20 114.24 1909-78 232.15 114.22 No other measures of C. The proper motion of A is given: Stumpe 07352 in 248^5 Paris 0.288 in 270.0 12645. P 1224. (6.6... 13- 3) R. A. 23" 50 53' Decl. + 55 10' A and C (11.7) 1912.619 .622 .638 356?70 356.90 356.80 77"5o 76.68 77-33 1912.62 356.80 77-17 For the proper motion of A. This from the star catalogues is very uncertain: Auwers o7o28 in 206? I Groombridge 0.030 in 101.5 308 Burnham: Measures of Proper Motion Stars 12651. 02512. (6. 6... io. 9 ) R. A. 23" 51 18" Decl. + 60 22' 1910.586 292^7 3"24 .608 291.6 3.21 .627 292.8 3.61 12663. R Cassiopeiae. Espin 37. R. A. 23* 52 19' Decl. + 50 43' A and B (11.8. . .13.8) 1910.678 272?9 14712 .701 272.6 13.85 1910.61 292.4 3.35 The proper motion of A is : Battermann o"o29 in 248?! h 2285 is io' n; many small stars, and of no special interest. 1910.69 272.7 13.98 A and C (10.5) 1910.678 330?o 27785 .681 331.6 27.62 .684 331-0 28.00 12654. H 321. (7-5-.. n. 2) R. A. 23" 51 38' Decl. + 10 48' 1911.813 I32?6 20793 .835 133-2 21. ii .870 132.9 20.75 1910.68 330.9 27.82 The only other measures are given in the General Catalogue Part I. The principal star is variable. 12666. o Cassiopfiae. 23049. (5-4-..7-5) R. A. 23" 52"' 55' Decl. + 55 5' 1911.84 132.9 20.93 No early measures. 12655. 23047. (8.7... 8. 7) A and C (10.5) 1 909 .493 66 ?9O 1 09748 .570 66.87 109-37 .573 66.85 109-60 R. A. 23" 51 50" Decl. + 56 43' A and C (12.5) 1909.744 i8g?8 7''98 .760 190.3 7-92 .763 189.3 8.29 1009-55 66.87 109.48 A prior measure is : 1879.79 66?68 110737 2n Bl The proper motion of the large star is very uncertain, anc the measures of AC should be continued. 1909.76 189.8 8.06 Change uncertain. 12656. 23048. (7. 7..- 8.8) R.A.23 h 5i m 57" Decl. +23 41' A and C (10.0) 1909.760 242?68 46772 .780 242.52 46.51 .782 243.17 46.52 Measures of C 07032 in 45?o Auwers 0.018 in 214.5 Groombridge 0.034 in 74-7 Boss 0.012 in 114.2 12673. H 3229. (io.5...ii.o) R. A. 23" 53"' 18" Decl. + 6 26' 1909.627 I449 8"i8 .630 143-5 7.78 .725 142.9 8.39 1909.77 242.79 46.58 The only other measure is that in G. C. Part II. The two positions give for the proper motion of A : Measures ol'igs in 196?. i Stumpe 0.198 in 203.8 Porter 0.182 in 201.2 Further measures of C should be made. 12657. H 995. (8.5...ii.o) 1909.66 143.8 8.12 No other measures. 12675. 2 3050. (6.0... o.o) R. A. 23" 53 23" Decl. + 33 4' A and C (12.8) 1909.744 288?8o 82728 .763 288.90 82.20 .780 288.85 82.07 R. A.23 B 5i m 58' Decl. + 27 59' 1907.485 i8?6 6728 540 17.5 6.12 .559 18.0 6.04 1909.76 288.85 82.18 One of the nearly equal components of 2 3050 has a sma proper motion of about 07026 in 160 ( 180). Later meas ures of the small star will show whether it is A or B, if onl 1007-53 18.0 6.15 Change is probable. The general motion of the two large stars is given : Boss o7io6 in 220?5 309 Burnliain: Measures of Proper Motion Stars 12685. H 1923. (H.O...H.4) R. A. 23" 54 16" Dccl. + 50 3' 1910.605 277?9 I2"i8 .608 278.7 1 1. 60 .627 280.3 U-53 The nine positions of D (1878-1907) give for the proper motion of 85 Pegasi: 1*317 in i3S?o The close agreement of this value with that found from the measures of AC is very satisfactory when the shorter interval 1910.61 279.0 H-77 H 1923 is in h 2292; of which the principal stars are DM (49) 4303-4-5. No other measures. 12693. OZ(App.)2 5 4. (6. 3... 7-7) R. A. 23" 55 m 8' Decl. + 59 4' A and B 1909.438 89^60 58*62 473 89-25 38-52 are taken into account. From the measures of AC (1851-1905) : i".2S6 in I395 Some of the values from meridian observations arc : Argelander 1*390 in 735?! Madler .376 in 133.3 Brunnow .259 in 133.6 Auwers .288 in 139.7 Porter .287 in 138.9 Boss .292 in 139.8 1909.46 89.42 58.57 A and a( 9.8) 1009.438 323^83 I55"87 473 323-85 155-68 Later measures of AD : 1910.678 293^25 g6"73 .681 293.13 97.11 .701 293.72 96.74 .739 293.70 96.82 493 3^3-97 '55-^ 1909.47 323.88 155-72 B and b (9.9) 1909.438 I2945 134*47 .473 129.28 134-34 .493 129.77 134-42 12703. 110209. (8.5... ii. o) 1909.47 129.50 134-41 For the small stars we have : I879-47 323?96 I56T46 3" Bl 1879.47 129.59 134-24 3n Bl R. A. 23" 56 12' Decl. + 32' 18' A and C (13.0) 1908.826 140^6 i7?86 9.706 139-7 17-74 9.742 139-3 17-74 proper motion of the large stars found in the catalogues. 12696. 1 1 11 60. (8. 5... 8.9) R. A. 23" 55" 17' Decl. + 38 58' 1907.695 3i6?5 0*31 Rapid motion ; a difficult pair. 12701. 85 I'e S asi. P 733- (6.0. ..12. 5) R. A. 23" 55" 54' Decl. + 26" 27' Aanrl f* (f\ f)\ 1909.42 139.9 17-78 Change uncertain. 1906.53 139?! I7"72 3n Doo. 12704. 23053. (6.0... 7. 3) R. A. 23" 56 27' Decl. + 65 26' A and C (10.8) 1911.698 289?98 98*54 .720 290.20 98.28 .736 289.75 98-69 1907.638 338?20 43:'78 .657 338.45 43-72 .673 338.36 43-70 1911.72 289.98 98.50 1912.619 289?go 98*31 .622 289.55 98.55 1907.66 338.34 43-73 .638 290.00 99.03 A and D (13.0) 1907.657 291 ?90 93? 34 .673 292-90 93.38 .675 292.50 94.08 .692 292.20 'M.88 1912.62 289.82 98.63 For the common proper motion of AB. The catalogues leave this very uncertain. Auwers 0*034 in ioo4 Schroeter 0.015 in 180.0 1907.67 292.38 93.67 Boss 0.017 in 106.6 310 Burnham: Measures of Proper Motion Stars 12709. |3 281. (7.S...II.O) R. A. 23" 56 m 38' Decl. + I 28' A and C (n.o) 1910.586 335?o 33':59 589 334-2 33-/S 605 333-7 34-55 1910.59 334-3 33-97 The proper motion of AB from the measures of C to 1898 will not be materially changed. Measures o!'o95 in I54?o Boss 0.079 in 154.1 12716. (? 861. (9. 4... 9.7) R. A. 23" 56 55' . Decl. + 69 2' A and B 1907.692 731 -750 177-8 175-5 1. 35 1.42 1.41 1907.72 176-9 1-39 A and C (13.4) 1907.731 47?3 i6':72 .750 46.1 15.88 1907.74 46.7 16.30 There is another star 13. 8m near A, 273^3 : i6"8. 12724. 2 3055- (7-0... ii. 2) R. A. 23" 57 m 51' Decl. + 11 29' A and C (12.4) 1912.867 3i73 . I22"8s .890 .925 31.77 31.10 122.70 122.15 1912.89 3I-53 122.57 For the proper motion of the principal star. No other measures. No change in AB. 12731. 23056. (7. 4... 7. 4 ) R. A. 23" 58 30' Decl. + 33 36' AB and C (9.0) 1912.810 3594 22"o6 813 359-0 22.88 .829 359.8 22.98 1912.82 359-4 22.94 AB and D (9.7) 1912.810 238?oo 95"59 .813 238.15 96.00 .829 237.95 95-45 1912.82 238.03 05.68 12740. 02547. (8. 3... 8. 3) R. A. 23" 59"' 12 s Decl. + 45 9' A and C (13.0) 1911.468 .529 545 218.4 218.4 38.18 38.10 1911.51 218.2 38.18 A and D (n.o) I9II-433 .468 .487 I7488 175.23 175-75 85-54 86.14 1911.46 175-29 A and E (n.o) I9H-433 .468 .487 6o?68 60.40 60.65 85.89 86': 17 86.35 85.08 1911.46 00.58 86.17 For the proper motion of A. This is a system of the 61 Cygni type, the two equal components having slightly different proper motions. From the star catalogues we have : Stumpe o"8g7 in g8?7 Porter 0.887 in 98.4 Paris 0.929 in 97.9 From the measures of AB (1876-1905) the relative motion of B is: o"o595 in 207^0 Fu-rther measures of the faint stars will give an independent value of the proper motion of A. 12741. 02(App.)255. (7. 8... 8. 2) R. A. 23" 59 m 14' Decl. + 15 40' 1912.829 .867 337.40 337-07 9"34 .38.74 89.23 1912.85 337-15 89.10 No change since the measures by Dembowski in 1874. 12750. 23060. (8. 5... 8. 7) R. A. 23* 59 m 47' Decl. + 17 25' A and C (n.o) 1912.755 262?is 8o"7o .791 .793 262.15 261.80 80.15 80.83 1912.78 262.03 80.56 I have given in the General Catalogue the proper motion of the close pair from the measures of C (1831-1904). The later observations will not sensibly change that result. o'.'o36 in 205! 7 There are no other measures of D. 2 3060 appears to belong to the 61 Cygni type, with a very small relative rectilinear motion, and I have therefore meas- ured a third star for the proper motion of A. This has been given : Battermann o'.'262 in 22g?7 UNIVERSITY OF CALIFORNIA LIBRARY BERKELEY Return to desk from which borrowed. This book is DUE on the last date stamped below. ASTRCNDMY LIBFIARY LD 21-100m-ll,'49(B714616)476 960566 QB B THE UNIVERSITY OF CALIFORNIA LIBRARY