uvr nnur $C 3M SSb CiBP ARY OF THE ASTRONOMICAL SOCIETY ROYAL PHOTOGRAPHIC MAGNITUDES OF STARS BRIGHTER THAN 9 m -0 BETWEEN DECLINATION +75 AND THE POLE. GIFT OF ASTRONOMICAL SOCIETY OF THE ASTRONOMY DEFT. < fi 4 * Y Or 1 " SOCIETY PHOTOGRAPHIC MAGNITUDES OF STARS BRIGHTER THAN 9"'0 BETWEEN DECLINATION +75 AND THE POLE DETERMINED AT THE ROYAL OBSERVATORY. GREENWICH UNDER THE DIRECTION OF F. W. DYSON, M.A., LL.D., F.R.S., ASTRONOMER ROYAL. LONDON: PRINTED UNDER THE AUTHORITY OF HIS MAJESTY'S STATIONERY OFFICE BY NEILL & CO., LIMITED, BELLEVUE, EDINBURGH. To be purchased, either directly or through any Bookseller, from WYMAN & SONS, LIMITED, 29 BREAMS BUILDINGS, FBTTER LANE, E.C., aud 54 ST MART STREET, CARDIFF; or H.M. STATIONERY" OFFICE (SCOTTISH BRANCH), 23 FORTH STREET, EDINBURGH; or E. PONSONBY, LIMITED, 116 GRAFTON STREET, DUBLIN; or from the Agencies in the British Colonies and Dependencies, the United States of America, the Continent of Europe and Abroad of T. FISHER UNWIN, LONDON, W.C. 1913. [Croirn Copyright Reserved.] Price Two Shillings. ASTRgNOMY PHOTOGRAPHIC MAGNITUDES OF STARS DOWN TO THE OTH MAGNITUDE. DEC. +75 TO +90. INTRODUCTION. 1. This volume contains the first part of a catalogue of Photographic Magnitudes of the Brighter Stars in the Greenwich Section of the Astrographic Catalogue (Dec. +64 to +90). It owes its inception to the need for supple- menting the work being done with the Astrographic Refractor, which is unsuitable for the comparison of stars brighter than the 9th magnitude with Professor Pickering's Polar Sequence, on account of the smalmess of its field and the scarcity of suitable comparison stars. There is but one star brighter than 9 - (B.D. 89 3, Mag. 8*9) within 60' of the pole, and thus a telescope with a larger field is required for the determination of the magnitudes of stars brighter than 9 m -0. 2. The Lens. The lens which has been found suitable for the work is a Cooke Astrographic Triplet of 6 inches aperture and 27 inches focus, designed to cover a field of 7f radius. When stopped down to 3 inches aperture there is no sensible distortion of the star images up to a radius of about 3. A field of 6 square has been used, so that three-quarters of the images measured are within 3 from the centre, and the extreme distance is not more than 4J. Photographs of stars taken with a prism placed before the lens showed that the colour correction was very good from K to H ? . Ilford " Empress " plates have been used on account of the fineness of the grain ; they are sensitive from the extreme ultraviolet to H^. They are 16 c.m. square, but only the central portion has been measured. For convenience of arrangement and identification of the stars a re"seau of lines 5 m.m. apart was imprinted on the plates before development. Wt. 22487 181 (588) 500 1/14. N. ft Co., Ltd. 701268 PHOTOGRAPHIC MAGNITUDES OF STARS. 3. Programme of Observation. The Greenwich section of the sky was divided into (5 zones of declination, and the centres of the fields photographed were taken at such intervals that the centres of the southern limits of two adjacent plates were not more than 6 apart. The following table shows the positions of the plate centres : Deo. of Centre. / R. A. of Centre. h h in h m h m h m h m 90 o, 3 o, 6 o, 9 > 87 o, 3 o, 6 o, 9 o, 12 0, 1 5 o, etc. 84 o, 2 24, 4 48, 7 12, 9 36, 12 o, etc. 78 0, i 30, 3 o, 4 3, 6 o, 7 30, etc. 72 o, i o, 2 0, 3 o, 4 o, 5 o, etc. 66 o, o 48, i 36, 2 24, 3 ", 4 o, etc. Each field was photographed when at the same altitude as the pole, and the polar area containing Pickering's standards was photographed immediately before or immediately after, on the same plate, with an exposure of equal length. No rule was adopted as to the order of the exposures, sometimes the pole and some- times the field being photographed first, economy in time being the only considera- tion. Two exposures were given to both field and pole. In the earlier plates these were 4 minutes and 2 minutes, but in the later plates generally both were of 4 minutes, although in a few cases when time pressed or when the sky was not quite dark two exposures of 3 minutes were given. These exposures were sufficient to give black images of the 9th magnitude stars, suitable for measurement of diameters. Moonlight nights were found to be unsuitable for the work, as the darkening of the film tended to spoil the hard edges of the images, making them less definite and consequently measurable with less certainty. 4. Additional Standards. It was found to be desirable to amplify the number of stars of the polar area available for purposes of comparison so as to include all stars brighter than 9 m '0. In the first instance this was attained by making three exposures on the same plate with the telescope pointed at the pole and at 3 on either side. Four such plates were taken with the telescope set at Right Ascensions O h , 3 h , 6 h , and 9 h respectively, so that each star was brought into from 8 to 12 different positions relatively to the axis of the lens. The magnitudes of about 100 stars were thus determined. Using these stars as standards the programme of comparing other fields with the pole was proceeded with. This Avork necessitated the measurement of the standards many times, and furnished material for the revision of the adopted magnitudes. In order that the same stars should not always fall in the same part of the field, the exposures on the 17' II " : : BOYAL OBSERVATORY, GREENWICH. DIAGRAMS showirg the position of four standard stars on different plates. B.D.+8 9 3. R.A. 3 h i9 m . Dec. +89 41'. 17 B.D.+88' 4. R.A. o h 56. Dec.+ 88 29'. ii 21 21 21 B.D. + 87' 5. R.A. 6 h 54 m . Dec. +87* iz' B.D. + 86* 269. K.A. i8 h 5 m . Dec. +86 37' ii 21 II 21 . t . 17"" ii .1 . * . 7 _ 0" 1 o 2 3 4 5 C 6 7 1 1 I | | | 1 1 1 1 1 Scale of Degrees. 6 PHOTOGRAPHIC MAGNITUDES OF STABS. polar area were made with the telescope pointing 1 from the pole and at various right ascensions generally the right ascension of the field compared. This revision of the secondary standards was made at the conclusion of the reduction of the measures of the plates whose centres are at declination 84 and 78. The results were used for the plates whose centres are at declination 72 and 66. The various positions which the standard stars may occupy on different plates are shown in the accompanying diagrams for four typical cases. They show to what extent the error in the measured magnitude due to position in the field may be expected to be " averaged out." 5. Measurement of the Plates. The magnitudes have been determined from measures of the diameters of the images. As already stated, on each plate two exposures were given to the pole and two to the field in which the magnitudes were to be determined. The diameters of the images were measured in both co-ordinates by two measurers, the plate being gone over strip by strip, and the means taken. The stars of the "field area" and the comparison stars of the " polar area " were measured indiscriminately as they came under the viewing microscope. Consequently the changes in personality due to fatigue or to variations in the light will affect equally the measures of the field stars and of the polar comparison stars in any particular part of a plate. The measures were made with a filar micrometer on a microscope of fairly high power about 50 diameters. In the early part of the work a power of about 20 was employed but the images were so small and sharply defined that it was found a higher power could be used with advantage. 6. Method of Reduction. The formula connecting magnitude and diameter has been taken as m = C k Jd where d is the measured diameter of the image, and the constants C and k are determined from the measures of the standard stars. These were arranged in order of magnitude and divided into three groups : (i.) Stars brighter than y m '5 (excluding Polaris), (ii.) Stars between 7 m- 5 and 8 m> 5. (iii.) Stars fainter than 8 m '5. The means of these groups gave three equations ; k was determined from the first and third and C from the mean of the three. This formula generally satisfies the measures very well over a range of at least three magnitudes. ROYAL OBSERVATORY, GREENWICH. The following table gives a list of the constants determined for some of the plates and the residuals of the groups show how far the equations are satisfied : Residuals. Plate. Constants. wi= C Ic^d. Mean Magnitude of Group. 8-8. m m m 4064 (4 m ) 771=16-39 '275 Jd '01 '02 + 02 4064 (2") 15-86 --275 + 03 03 -oo 4064 (4-) 16-11 -268 oo + -oi -oi 4064 (2-) 15-91 --274 02 + 02 'OI 47' (4") 14-58 --215 + 'O2 04 +-02 4071 (2 m ) 14-45 --227 + 03 -05 + 03 4071 (4 m ) 14-82 -220 + 03 -04 + '02 4071 (2 m ) 14-29 -'224 + 'O2 -05 + 03 4376 14-30 --207 oo I oo 4377 14-51 --214 + 02 -04 + 02 4378 14-65 --214 + 03 -03 + 02 4379 14-77 --215 + '02 -04 + -O2 4406 14-53 --205 oo O2 + 01 4407 14-39 --205 oo + 02 01 44 13 13-98 -204 -oi oo oi 443" 14-59 -'222 +03 -05 +03 4432 I4-2I '211 oo -01 oo 4434 1474 -228 +04 -08 +04 4487 15-I5 --233 oo oi oo 45'4 I4-95 --225 + 01 oi + 01 45'5 I5-l6 -229 02 +03 02 Means. + 010 -0*1 + -OIO It will be noticed that this is not a complete list of all the plates. When the work was begun a graphical method was used sometimes, but was afterwards discontinued. It was not however considered necessary to recompute the results already obtained by the graphical process. 7. Errors depending on the Position of a Star on a Plate. When the secondary standards had been revised, as shown on p. 4, it was considered advisable to attempt to determine the error in the measured magnitude due to the position of the star on the plate. The fields measured are contained within the reseau lines 7 and 21 in each co-ordinate, the centre being at 14 (see diagrams p. 5). Each field was subdivided into 9 regions by the lines 11 and 17 in each co-ordinate, thus : x. y. x. y. x. y. 7-1 1, 7-U 11-17, 7-U 17-21, /-" 7-1 1, 11-17 "-'7, 11-17 '7-2i, 11-17 7-1 1, 17-21 "-17, 17-21 17-21, 17-21 PHOTOGRAPHIC MAGNITUDES OF STARS. The means of the residuals of the magnitudes of the polar standards obtained from the measures of images in these areas were equated to expressions of the form, ax + by + ex* + dy 2 + exy +/, and for each plate gave nine equations for the determination of the constants a, b, c, etc. As the focus of this triple lens was liable to change slightly from time to time sufficient to alter the character of the images in the different parts of the field a single set of constants could not be adopted for all the plates. They were therefore treated independently or in nightly groups if more than one plate had been taken on any one night. In the following table the mean differences between the magnitudes derived directly from the formula m = C k^d, and the adopted magnitudes of the polar stars, are given for the nine areas into which the plate was divided. The mean co-ordinates for the group are also given : CORRECTION FOR POSITION ON THE PLATE. 443 > 443 2 - 4434- R.A. i8 Dec. +89. R.A. 7 h 30" Dec. +89. R.A. I9 h 30" Dec. +89. X. y- Mean Difi'. of Mag. No. of Stars. X. y- Mean Ditf. of Mag. No. of Stars. X. y- Mean Diff. of Mag. No. of Stars. int. int. in int. int. m int. int. m -6-0 -4-9 028 6 -4'9 -3'9 030 2 -4*3 -4-4 -02 J 4 + 0-1 -4'9 -114 12 -0-3 -4-8 -057 10 -0-4 -5 - z -054 1 1 + 4'* -S'3 130 3 + 4'8 -5-6 -104 7 +4'9 -4-9 -'Si 8 -5^ + 0-6 + 0-5 + 0-1 + 009 047 '5 ii -5' 1 + 0-3 + 0-2 -0-7 + 073 +014 '4 8 -4'9 + 0-2 + 1-6 -0-4 + '9 6 050 5 13 + 5'5 + 0-1 -056 9 + 4-8 -0-9 06 1 13 + 5'I + 0-4 02 1 !3 -5'3 +5-5 + 013 9 -57 + 47 + '73 6 -5'i + 4-8 + 070 10 + 0-9 +4-5 -044 7 + 0-3 + 5'4 008 8 + 0-1 + 4'' + 060 7 +4'9 + 4-8 + 077 12 + 57 + 4-8 + 073 7 + 5'i + 5'4 + 053 7 KOYAL OBSERVATORY, GREENWICH. 9 The means of the three plates, weighted according to the number of stars, were formed ^and are shown in the next table together with the co-efficients for the nine equations of condition. MEAN OF PLATES 4431, 4432 AND 4434. X. y- 3?. y'. xy. Mean Diff. of Mag. C. C. IDt int. m m in -5'3 -4-6 28-1 21-2 + 24-4 -027 006 O2 1 O'2 -;-o o-o 25-0 + ro -077 -094 + 017 + 47 -5-i 22-1 26-O -24-0 -129 -131 + 002 -S'l 40-5 26-0 0-3 - 2-6 + 048 + 028 + 020 +0-4 -o'3 O'2 O'l O'l -033 -032 'OOI + 5'' + 0-2 26-0 O'O + ro -045 028 -017 -5'3 + 5-0 28-1 25-0 -26-5 + 050 + 047 + 003 + 0-4 + 47 O'Z 22-1 + 1-9 + 002 + '011 'Dig + S'* + 5'o 27-0 25'O I +26-0 + 069 + 051 + 018 - **> O * t The solution of the equations gave the constants : a= -0055 b= +'0120 c = + -0009 d = '0004 P. = +-OOI2 /= - m '026 Substituting these values we get the column C, and the column O-C shows how far the formula satisfies the equations of condition. Corrections of this nature have been applied to all the measures. 8. Revision of the Magnitudes of the Secondary Standards. As the plates in the zones whose centres are at declination + 72 and + 66 are measured and partly reduced, it has been possible to make a further revision of the Secondary Standards, using all the plates measured, in many cases 90 or more. It is satisfactory to note that the corrections are generally very small. The mean magnitudes of the stars in Pickering's polar sequence determined PHOTOGRAPHIC MAGNITUDES. 2 10 PHOTOGRAPHIC MAGNITUDES OF STABS. from all the plates have been compared with the adopted magnitudes given in Harvard Circular No. 170. The result is shown in Table I. : TABLE I. COMPARISON WITH PICKERING'S SYSTEM (H. C. No. 170). Harvard Circular No. 170. Magnitude determined from the Plates. H-G. Means of Groups. Harvard Circular No. 170. Magnitude determined from the Plates. H-G. Means of Groups. No. Mag. Mag. H-G. No. Mag. Mag. H-G. m m m m m m m m m m is 271 .. . ... 8 8-10 8-12 O2 V 8-62 8-64 O2 8-48 007 i 4'47 4'36 + 11 4-36 + 11 9 870 8-68 + 02 2 5'*4 5-16 + 08 5-16 + 08 10 V 8-89 8-97 8-87 8'93 + '02 + 04 8-90 + 030 3 4 574 5-91 5-67 5-81 + 07 + 10 574 + 08; 2S 6-38 6-44 -06 1 1 12 9-42 973 9'33 9'49 + 09 + '24 9-41 + 165 5 3 6-39 6-54 6-40 6-49 -oi +05 6-46 + '43 ir 6-69 6-50 +19 57- 978 975 + 03 4 9-99 9-66 + '33 6 6-98 7-01 -03 6r 10-17 9-85 + 32 9-86 + 270 7 7-18 7-19 'OI 7-30 ooo 13 10-17 9-84 + '33 ^r 773 7-69 +04 >4 10-52 10-18 + '34 From the means of the groups given in the last two columns, Table II. has been computed. It is assumed that in the various processes of measurement and reduction a systematic divergence from Pickering's standards has occurred to this extent, and these corrections have therefore been applied to all the magnitudes given in the catalogue. TABLE II. CORRECTION APPLIED TO MEASURED MAGNITUDES TO REDUCE THEM TO PICKERING'S SYSTEM (H.C. No. 170). Measured Mag. Correction. Measured Mag. Correction. Measured Mag. Correction. m 4'0 m + 12 m 6-0 m + 07 m 8-0 HI -oi 4'5 + 11 6-5 + 04 9 '0 + 04 5'0 + 10 7-0 + 02 9'5 + '4 5'5 +09 7'5 -01 IO'O + 31 ROYAL OBSERVATORY, GREENWICH. 11 The adopted magnitudes of the Secondary Standards are giveu in Table III. The magnitudes of the stars in this list differ but slightly from those already published in the Monthly Notices of the Royal Astronomical Society, Vol. LXXII. pp. 693-699. The magnitudes of the catalogue pp. 15-34 are systematically those of this list. TABLE III. SECONDARY POLAR STANDARDS BASED ON PICKERING'S POLAR SEQUENCE (HARVARD CIRCULAR No. 170). B.D. No. Harvard Circular No. 170. Adopted Photog. Mag. No. of Plates. B.D. No. Harvard Circular No. 170. Adopted Photog. Mag. No. of Plates. No. Mag. No. Mag. m m m m 88.' 8 18 2-71 271 85- 384 ... 7-46 28 86. 269 I 4'47 4'47 69 85. 263 7 '47 12 85. 383 2 5' 2 4 5-24 29 85- 45 ... 7-48 II 85. 19 ... ... 5'49 '5 85. 294 ... ... 7-50 29 86. 344 3 574 575 80 86. 79 ... ... 7'Si 63 86. 272 4 5 - 9 ! 5-89 78 85. 41 ... ... 7'S 1 IO 86. 51 6-05 48 85. 128 ... 7'55 12 88. 4 5 6-39 6-45 92 84. 378 7'57 9 85- 78 6-45 15 86. 66 ... 7-65 26 88. 71 M 6-38 6-49 9 1 88. 112 2r 773 7-69 92 87. 107 3 6-54 6-54 81 86. 217 ... . 7-71 57 87. 51 ir 6-69 6-55 70 86. 347 ... 773 49 85- 74 ... 6-58 '9 86. 39 .. . 778 60 85. 409 . . . ... 6-59 37 86. 335 7-87 83 86. 176 ... 6-64 4 86. 282 ... ... 7-87 60 85- 399 ... ... 6-64 27 86. 187 ... ... 7-87 47 84. 451 6-71 6 86. 221 ... 7-88 34 85. 269 ... 6-78 21 85. 161 ..* ... 7-89 5 85. 63 ... 6-86 5 87. 101 ... 7-90 84 85. 403 6-94 26 84. 383 ... ... 7-90 6 84. 517 > ... 6-99 7 85- 183 ... 7'93 13 86. 17 ... ... 7-02 64 8 4- 445 7-93 7 8.9. 13 6 6-98 7-03 89 86. 193 ... ... 7-96 17 86. 182 ... 7-18 38 84. 15 ... 7-98 7 88. 64 7 7-18 7-19 9' 87. 15 ... ... 7'99 9' 86. 319 ... 7-21 78 84. 546 ... 7-99 7 87. 205 ... 7-25 9 1 86. 113 8-00 23 86. 161 .. . 7-26 35 86. 25 8-02 52 84. 412 ... 7-30 6 84. 352 ... 8-02 10 85. 401 ... ... 7'32 32 87. 143 8-05 9' 84. 463 7'33 10 85. 400 ... ... 8-07 21 86. 201 7'35 39 85- 249 ... 8-08 '9 86. 170 ... 7-38 39 86. 103 ... 8'i i 46 85. 222 ... 7'45 7 88. 9 8 8-10 8-12 91 85. 80 ... 7-46 6 83- i5 ... ... 8-12 '7 12 PHOTOGRAPHIC MAGNITUDES OF STARS. TABLE III. continued. B.D. No. Harvard Circular No. 170. Adopted Photog. Mag. No. of Plates. B.D. No. Harvard Circular No. 170. Adopted Photog. Mag. No. of Plates. No. Mag. No. Mag. m m m m 85. 11 ... 8'12 '4 88. 86 8-58 92 86. 143 ... ... 8-14 35 8 4- 5 2 3 8'59 H 86. 324 ... ... 8-18 67 85. 191 8-61 16 84. 360 ... ... 8-18 9 85- 337 * * 8-61 2 3 88. 104 ... 8-20 9i 86. 172 ... ... 8-61 35 87. 78 ... 8-21 7i 85- 367 8-62 34 86. 159 ... 8-21 3 85. 278 ... 8-62 2 5 87. 169 ... ... 8-22 85 85- 75 . .. 8-62 7 87. 147 ... 8-24 90 88. 76 IT 8-62 8-65 9 1 85- 359 ... 8-24 2 4 87. 99 ... ... 8-65 58 85. 81 ... 8-24 6 86. 1 80 8-66 16 87. 180 ... . . . 8-25 84 86. 65 . * 8-68 69 86. 154 ... 8-25 21 86. 21 8-68 43 84. 536 ... 8-28 II 85. 48 ... 8-68 '4 85. 9 8'30 27 88. 13 9 870 8-69 9 1 85. 50 8-31 IS 88. 2 8-69 9< 85. 132 8-34 5 88. ii 8-69 88 87. 181 . . . 8-35 9 1 86. 54 8-69 62 86. 264 * . . 8-35 72 85. 234 ... 8-69 7 87. 122 ... 8-39 89 84. 446 870 7 86. 152 ... 8-39 4* 88. 131 8-70 9 1 87. 201 8-40 89 85- 376 . . . 8-70 12 85. 65 ... 8-43 7 87. 217 871 9' 84. 179 ... ... 8'43 10 84. 14 8-73 I I 84. 505 ... ... 8-43 7 87. 115 ... 8'73 86 86. 9 8-44 46 87. 68 8-74 70 85. 406 . .. 8-44 18 88. 117 * . 876 9" 86. 275 ... ... 8-46 59 86. 177 8-76 39 86. 318 ... .. . 8-48 89 85. 142 . . . . . . 8-76 ii 85. 196 ... 8-48 16 85- 329 ... 876 30 86. 102 ... 8-49 46 87. 9 8-77 9 84. 461 8-49 10 87. 12 ... . . . 878 9 1 87. 83 8-50 69 85. 266 ... 8'79 15 85. 150 8-51 5 . 88. 105 > . 8-83 9 85. 412 ... ... 8-53 36 85. 248 ... ... 8'83 15 87. 33 8-53 90 87. i 8-85 90 85. 2 ... 8-54 37 87. 26 * . 8-85 87 84. 389 ... ... 8-54 6 87. 104 8-85 80 88. 77 . . 8-56 9 1 88. 80 ... 8-86 90 85. 160 ... 8-56 1 1 88. 60 ... 8-86 88 EOYAL OBSERVATORY, GREENWICH. 13 TABLE III. continued. B.D. No. Harvard Circular No. 170. Adopted Photog. Mag. No. of Plates. B.D. No. Harvard Circular No. 170. Adopted Photog. Mag. No. of Plates. No. Mag. No. Mag. m m m m 85/320 ... 8-86 22 85-33 ... 9''3 26 85. 101 ... 8-86 5 86. 120 ... ... 9-14 5 8>- 53 8-88 32 88. 100 ... ... 9-i5 24 89. 3 10 8-89 8-90 95 86. 91 ... 9''5 >3 88. 115 ... 8-90 9 1 88. 75 ... ... 9-16 2 5 85- 57 ... 8-90 4 86. 184 ... ... 916 H 86. 96 ... 8-92 45 87. 23 ... ... 9-16 27 87. 187 ... ... 8-93 9 1 85. 361 ... ... 9-16 8 87. 16 ... ... 8-94 90 85- 37i 9-16 7 86. 7 ... ... 8-95 83 85. 46 ... ... 9-19 7 87. 46 * ... 8-95 75 86. 49 . . ... 9-19 10 86.' 38 ... 8-95 47 87. 82 ... 9-20 23 85. 32 ... 8-95 '3 88. 130 9-22 22 86. 146 ... 8-95 1 1 87. 71 ... 9-22 2O 88. 114 4- 8-97 8-96 9' 86. 297 ... ... 9-23 '9 87- 8; ... 8-96 81 86. 222 ... 9-23 '9 85- 233 ... 8-96 9 86. 45 ... ... 9-23 8 86. 256 ... ... 8-97 37 85. 155 ... ... 9-23 6 85- 69 ... 8-97 6 88. 101 ... ... 9-25 25 85- 347 ... 8-99 '9 85- 355 ... 9-25 7 86. 86 ... 8-99 17 86. 163 ... ... 9-25 4 86. 126 ... 8'99 ii 87. 185 ... ... 9-27 24 88. no ... ... 9-00 9' 86. 169 ... 9-28 10 86. 171 9-00 16 88. 35 ... 9 -2 9 12 85. 62 ... 9-01 5 86. 191 ... 9-29 H 88. 39 ... 9-02 35 88. in 9-29 21 85- 39 ... 9-02 2 9 87. 5 9'3 12 86. 2ii ... 9-02 16 86. 263 9-30 25 85. 340 . .. 9-02 '3 86. 286 ... 9-32 8 85. 239 ... ... 9-02- 7 86. 107 ... ... 9-32 6 86. 67 ... 9-03 57 89. 21 ... 9 - 33 86 85- 354 ... 9-03 12 87. 117 ... ... 9'33 9 86. 277 ... 9-04 32 87- 193 9-35 13 86. 43 ... ... 9-04 21 88. 5 9-35 16 86. 199 ... 9-05 27 86. 165 " ... 9-36 6 87. 45 . . . ... 9-08 27 88. 139 ... ... 9'37 '4 86. 14 ... ... 9-10 64 85. 392 ... ... 9 - 37 6 86. 64 ... 9-10 9 86. 75 ... ... 9-38 8 86. 242 9-10 H 87- 35 ... 9-38 10 87- 79 ... ... 9-11 29 85. 83 ... 9-38 6 87. 151 ... ... 9-11 3i 87. 206 ... 9-41 16 86. 332 9-11 35 87. 80 9-42 9 86. 290 9-12 '9 89. 1 8 II 9-42 9-42 86 86. 44 ... 9-12 if 87. 121 ... 9-42 10 85. 304 ... 9-12 8 87. 124 ... ... 9-42 13 14 PHOTOGRAPHIC MAGNITUDES OF STARS. 9. The Probable Error. The probable error of a single determination of magnitude on an average plate has been found to be m '056, obtained by comparing the residuals of the polar standards amongst themselves. As this does not include the error introduced by want of constancy in the sky while the photographs were being taken or to the possible inequality of the sky at the pole and at the field, comparison was made of the two observations of one star in every twenty in the catalogue. The mean discordance between the two observations was rt m 106 giving a probable error of m> 064 for a single observation. This is slightly larger than the result given above, on account of the slight differences between the sky at the pole and at the field. This figure includes all the accidental errors of observation and measurement to which this method of comparison is liable. As most of the stars have at least two observations, the probable errors of the magnitudes given in the catalogue seldom exceed m< 045. The photographs were taken and measured, and the magnitudes determined under the direction of Mr Davidson. F. W. DYSON. ROYAL OBSERVATORY, GREENWICH, 18th September 1913. ROYAL OBSERVATORY, GREENWICH. PHOTOGRAPHIC MAGNITUDES OF STARS BRIGHTER THAN THE 9ra MAGNITUDE Dec. +75 to +90. B.D R.A. Dec. Photog. T4I err No. of B.D E.A. Dec. Photog. \f 78 8 55 9 -I 16 + 78 24 8'39 I 81 13 6-5 o 32 13 + 81 57 6-83 3 87 220 8-8 o 20 87 20 9-56 5 76 14 7'0 33 23 76 19 7'53 2 80 793 8-8 o 26 80 31 8-79 2 76 16 9 -0 33 42 76 18 8-91 2 84 546 8-2 I 28 84 51 7'99 7 83 12 9-2 33 48 8 3 49 9-31 2 85 412 9-0 2 I 4 86 14 8-53 36 80 1 6 8-9 35 4 Si 14 8-82 2 78 65 3 49 79 I0 6-09 2 78 21 8-0 35 53 78 39 8-83 2 79 9'3 4 79 Si 9-23 2 76 20 8-9 36 19 76 27 8-82 2 85 9'5 4 i 85 28 9-32 2 86 9 8-6 37 8 86 24 8-44 46 83 8-5 4 -7 83 36 8-17 3 76 22 8-2 37 33 76 40 8-90 2 75 87 4 32 75 26 9'45 I 84 13 9-0 37 46 84 3 8-48 5 11 61 83 3 9-0 070 + 83 29 9-00 1 76 23 9'i o 37 59 + 76 27 8'94 2 87 i 9-0 7 27 87 51 8-85 9 75 36 7'9 38 12 75 24 7-63 3 7 8 2 9'5 7 37 78 20 9-29 I 87 5 9-2 38 55 87 17 9-30 12 75 4 7-1 8 29 75 28 8-69 2 80 19 8-4 39 20 80 36 9-14 I 8 5 2 8-9 8 45 86 10 8-54 37 82 17 9' 1 39 21 82 35 9'5 I 75 5 7'9 8 49 75 28 8-45 2 81 16 9-2 40 i o 81 53 9'45 2 85 3 8-8 9 2 3 86 7 9-68 I 75 42 8-4 41 10 76 o 8-27 2 77 4 8-2 9 3 77 28 9-03 I 81 17 9'3 41 11 Si 25 9-40 2 82 4 8-8 9 58 82 49 8-68 I 83 15 8-8 41 21 84 5 8-73 3 84 3 8-0 10 28 84 24 7-56 3 77 25 7-0 4' 33 77 55 775 2 21 71 76 5 6-5 o 10 33 + 76 24 6-3, 2 80 20 9-1 o 41 35 + 80 48 9-14 I 80 3 8-8 10 52 81 7 9-07 2 81 18 7-6 4i 55 81 25 8-07 2 76 6 9-0 II 21 77 2 9-16 I 76 25 9-0 42 o 76 26 8-83 2 84 4 9-2 I I jO 84 38 8-86 3 80 21 8-9 42 31 81 4 8-98 2 75 6 8-8 II jl 75 35 8-41 2 8 7 7 9'5 42 47 87 21 9-84 3 75 7 7'4 12 43 75 43 6-92 2 77 27 67 43 4i 77 25 6-73 2 80 4 9-0 13 10 8c 53 9-05 I 74 33 8-9 43 45 75 3 8-66 4 75 8 9'5 13 28 75 16 9-22 I 86 ii 9'5 43 5 86 22 977 i 75 10 7-8 14 26 76 i 9-23 2 84 14 8-6 44 9 85 10 8- 73 ii 77 6 8-9 15 43 77 55 8-66 2 77 *8 8-5 44 9 77 5 1 8-96 2 31 81 88 2 8-8 o 16 4 + 88 53 8-69 9 1 77 29 8-2 o 44 22 + 78 5 8-83 2 So 8 9-0 '7 15 80 38 9-21 i 79 -9 77 44 49 79 l8 7'44 2 77 9 8-5 18 17 77 17 8-58 2 84 15 8-2 45 H 84 55 7-98 7 79 10 7-0 20 42 79 30 6-24 2 8l 20 9-0 45 H 82 15 875 2 75 i 8-8 22 4 I 75 39 8-83 2 82 20 6-5 45 30 83 10 5-86 2 80 10 7'9 24 3 80 49 7-92 2 84 16 9-1 45 37 84 + 6 9 19 2 76 jo 6-5 24 29 76 28 6-95 2 82 21 9-1 47 5 83 10 9'O2 2 85 9 8-3 26 12 85 46 8-30 27 Si 23 8'9 48 3i 82 9 8-95 2 84 9 9-0 26 41 84 26 8-58 3 76 27 9-0 48 45 76 30 9-01 2 86 7 8-8 27 6 87 15 8-95 83 86 14 8-8 49 12 86 47 9*10 64 41 91 82 14 8'3 o 27 49 + 83 5 776 i 82 22 9' 1 o 49 46 + 83 9 9-20 2 76 12 8-4 28 36 76 57 8-15 2 82 23 8> 49 5 2 82 34 7 '99 2 84 10 8-5 28 49 84 32 8-51 3 76 28 8-0 49 54 76 56 7-96 2 8 5 11 8-8 29 14 85 25 8-12 H 82 24 9'2 50 1 1 82 15 9'37 2 75 26 9'4 29 31 75 "5 9'35 4 75 45 87 50 40 75 28 8-64 3 83 9 7'8 29 47 84 7 7'33 3 -6 30 8-8 5i 39 76 56 8-50 2 74 21 9-5 29 53 75 '3 9'53 3 83 19 9-0 5' 49 84 7 8-84 3 83 10 9-0 3 53 84 12 8-n 3 79 24 6'5 5 2 9 80 o 676 2 83 11 9-2 31 16 84 12 8-42 3 83 20 7-0 52 49 84 4 6-69 4 85 13 9 '4 3* 6 85 43 9'47 2 80 26 8-5 53 '7 80 28 8-54 2 72. RX Cephei, i 912 Jan. ij ^392. 16 PHOTOGRAPHIC MAGNITUDES OF STARS. Dec. + 75 to + 90. B.D. E.A. Dec. Photog. No. of B.D. R.A. Dec. Pliotog. -Ill No. of No. Mag. 1 900*0. 1900*0. fflHg. Plates. No. | Mag. 1 900 *o. 1900*0. Mag. Plates. 1O1 161 o h in s o / h m s C i 81 25 var. o 53 23 + 8l 20 6-58 4 80 50 7'4 I 29 38 + 80 55 6*89 2 76 31 8-2 53 4 1 76 19 8*25 2 Si 47 8*8 29 58 81 34 9'44 2 78 28 8-1 54 2 7 78 52 8*2 7 2 75 69 8*1 30 6 76 13 8-07 3 81 27 8-6 54 42 81 34 8*69 2 80 51 9*1 3 5i 81 ii 9*42 I 85 19 S' 55 2 85 43 5'49 15 77 58 6*5 3i 35 77 2 8 6*48 I 77 34 8'3 55 5 77 47 8*79 a 74 73 8'5 3i 44 75 3 8*79 2 81 29 8-6 55 26 81 43 8-69 2 85 32 9*0 32 6 85 46 8'95 13 88 4 7'5 55 38 88 29 6*45 92 ?6 53 8*5 3 2 6 76 20 8*79 I 85 20 8-9 55 39 85 16 9'35 4 78 52 8*0 32 31 7 8 5 8*94 I 81 30 8'3 56 20 81 25 773 3 80 52 9*1 3 2 3 2 80 41 9'54 I 111 171 79 26 8-8 57 59 + 79 33 8-67 2 84 29 8-0 i 33 52 + 84 43 7-90 4 86 17 7'5 59 6 86 37 7-02 64 Si 51 8*7 33 59 81 59 8*52 2 88 5 9-2 59 3 88 27 9'35 16 84 30 9*0 34 5* 84 33 8*66 4 87 9 8-8 o 59 36 87 44 8*77 90 79 5 9*0 34 58 80 i 8*61 I 76 33 8-1 i o 33 77 9 8*36 2 79 5 1 8-0 35 38 79 45 8*79 I 79 2 9 '4 o 40 79 2 9 6*90 2 75 72 7*0 35 57 75 22 7-21 2 82 30 9-0 I 16 82 55 8-53 2 83 36 8-9 37 6 83 53 9*24 2 K. 183 9'3 i 29 79 4 9*01 2 81 57 8*6 38 26 81 19 8*86 2 78 33 8-8 1 45 79 4 9'45 2 80 55 7'5 38 50 80 23 6*75 2 84 18 8-8 3 16 84 34 8-82 5 83 38 87 39 " 83 5 8*92 4 121 181 81 34 87 I 3 26 + 81 15 9'49 2 81 58 9*2 i 39 35 + 8z 5 9'59 I 78 34 5-6 3 38 79 8 5-63 2 80 57 7'5 39 4 6 8o 53 7*28 2 80 31 87 3 39 80 27 9-08 2 8 2 43 8*8 40 6 82 31 9*26 2 77 4 1 8'3 5 i* 77 18 8*18 2 86 25 8*8 40 19 86 26 8*02 5 2 80 32 9'3 6 i 80 57 9'3i 2 76 58 8-0 40 35 76 30 8*50 I 85 24 9'4 6 55 85 54 9*56 I 84 32 8*9 41 o 84 39 9*19 3 79 36 6-5 7 39 79 Z 3 6-57 2 83 39 9'3 41 2 : 83 34 9*60 2 76 38 8-9 8 24 76 16 8*95 2 79 55 8*6 41 23 79 42 8*69 I 80 34 8-0 8 30 81 2 8*29 2 74 84 6*8 42 49 75 6 7-08 3 83 2 7 9-2 9 i 83 4 2 9*29 3 81 61 6*8 43 3' 81 28 8*37 2 131 191 77 45 8-4 i 9 5 + 77 l6 8*27 2 85 36 9' 1 i 43 42 +85 15 9-28 3 80 35 7'3 9 41 80 20 7-25 3 83 40 9*0 43 4 2 83 2 4 8*80 3 77 46 !!' 5 9 52 78 7 8*64 2 81 62 9'3 43 5 6 82 9 929 i 80 36 6-7 10 4 80 22 6-60 3 83 4i 9*0 44 17 83 14 8*91 4 80 37 9-1 10 34 Si 12 9'34 2 80 58 6*8 44 35 80 25 8*24 2 86 21 8-8 10 50 86 25 8*68 43 77 6 5 6*5 44 44 77 42 7*38 2 76 39 7-0 ii 6 76 16 8-21 2 8 4 34 8*1 45 4 2 84 i5 8*59 4 76 40 6-4 n 59 77 3 6-90 2 81 63 9'3 46 7 81 58 9'oo I 79 39 8-0 13 9 79 36 778 2 75 76 6*8 46 ii 75 44 7'3 2 78 36 7'5 1310 78 3 8-u 2 75 77 8*0 46 40 75 33 8*30 2 141 20 1 75 58 7-1 i 13 48 + 76 ii 777 2 77 67 8*5 i 47 16 + 77 26 8*45 2 75 59 6*2 '3 52 75 43 6*46 2 78 62 8'3 4 8 24 79 '3 8-60 2 83 30 9'3 3 54 84 ! 3 8*98 2 75 8 7*6 48 39 75 53 8*19 2 80 38 8-4 H 44 80 50 9*12 3 78 63 8*5 49 3 78 51 9'43 2 77 49 6-0 14 58 78 12 6*27 2 85 38 9*0 49 " 85 59 9*36 5 79 4 9-0 15 ii 79 47 8*65 2 87 15 8-2 49 43 88 o 7'99 9 1 78 40 8'3 16 15 78 34 8*40 2 81 67 8*4 5 24 82 4 9*46 i 88 6 9'5 17 26 88 34 974 2 79 57 8*8 5 39 79 4 8 9-12 i 84 23 8-8 '7 44 84 5 2 9'3i 3 75 83 7*2 51 17 75 28 8-82 2 76 42 151 8*0 17 51 77 9 775 2 78 65 211 9.3 51 40 79 J 3 9*52 2 87 12 8-0 I 18 4 + 88 3 8*78 9 1 81 68 9*0 i 5i 53 + 81 59 8*81 I 8 4 H 9-2 18 14 84 59 9'53 2 80 61 8*6 5 1 57 80 31 8*74 2 80 43 8-6 18 54 80 31 9'35 2 8 3 45 9*2 52 6 83 53 9*42 2 87 13 9-1 21 25 87 23 9*48 5 78 66 8-1 S 2 7 78 26 7*83 2 88 8 2*O 22 33 88 46 2-71 77 7 2 8-8 S 2 43 77 45 8*91 2 78 45 8'5 22 50 78 38 8*50 2 77 73 6'3 S 2 49 77 26 6*87 2 82 39 8-8 2 3 3 82 50 9-08 2 74 9 1 6'5 S 2 5 2 75 i 6*43 4 82 40 8'6 2 3 5 82 17 8-98 2 80 63 8*9 54 u 81 9 9-38 i 76 49 8-6 26 29 77 5 8*84 I 76 63 5 '3 55 6 76 48 5-67 2 78 49 8'5 26 54 78 39 8*47 I 79 6l 7'5 55 43 80 ii 7*26 2 101. U Cephei, 1911 Aug. 8 d *476, 6 m *72 ; Aug. 9 d- 434. 6 m '49 > '9 12 *J an * 2 7 d '39 2 > 6m '5 8 > 6 m '5 z * ROYAL OBSERVATORY, GREENWICII. Dec. +75 to +90. 17 B.D. R.A. Dec. Photog. \f _ No. of B.D. R.A. Dec. Photog. \lflC7 No. of No. Mag. I9OO*O. 1 900 *o. Mag. Plates. No. Mag. 1 900 *o I QOO'O, .nag. Plates. 221 281 h m s h m s O / 75 86 5' i 55 58 + 75 38 6-16 2 78 95 8-0 2 32 8 + 78 46 8-65 2 87 16 8-8 56 7 88 12 8-9*4 90 86 39 8-6 32 13 86 37 778 60 86 29 9 '4 5 6 33 86 25 9-80 I 8$ 46 8-9 3 2 22 85 50 9-19 7 So 64 6-1 57 5 80 49 6-21 2 8 1 90 8-5 32 50 81 26 9-76 I 78 69 7'3 57 S3 78 52 7-01 2 80 86 5'9 33 21 81 i 7*O2 3 80 65 67 57 54 81 o 6-87 2 80 87 9-0 34 55 81 o 9-46 i C 5 4i 77 i 58 48 85 16 7-51 IO 81 93 9-2 38 58 81 28 9-69 i 78 71 7'3 2 I 6 79 '3 7-19 2 85 48 8-8 39 27 85 27 8-68 H 82 51 7-0 i 25 83 5 7-08 2 81 95 8-6 39 38 81 59 8-40 i 79 6 3 6-7 i 25 79 '3 6-58 2 78 98 8-0 40 49 78 15 8-58 2 231 291 77 76 87 * 3 7 + 77 26 8-23 2 85 50 8-8 2 40 58 + 85 28 8-31 '5 86 31 9'3 3 37 86 58 9-45 7 81 96 8-5 41 15 81 26 9-19 I 86 32 9'3 4 3i 86 54 9-60 5 75 108 9-2 4 I 21 75 3 2 9'43 2 78 73 7-3 4 4i 78 43 6-88 2 79 86 7-0 41 48 79 42 7-21 2 76 75 9-0 5 38 76 28 8-56 2 88 13 8-5 42 '5 88 34 8-69 91 83 52 9-1 6 4 84 6 9-02 4 82 70 9'2 43 22 82 45 9-04 I 82 52 9-2 649 82 41 9-56 I 80 89 8-0 43 55 80 39 8-68 2 8+ 37 9-2 6 56 84 21 9'59 2 75 i9 7'5 44 15 76 7 8-53 2 77 78 7 '9 7 39 "7 '7 879 2 75 " 8-5 44 35 75 49 8-72 2 80 70 77 8 36 80 16 7-46 2 80 90 8'3 45 ii 80 16 8-99 2 241 301 84 38 9-1 2 8 45 + 84 43 9'33 3 84 48 9-2 2 45 i- + 84 14 8-61 3 83 54 8-9 9 44 83 13 7-99 i 75 "3 8-6 45 19 75 15 7-87 2 84 40 9-0 9 52 84 36 9-52 4 75 * 9-0 45 *8 75 26 9-32 2 78 78 9-0 10 4 79 '2 9-05 2 79 88 8'4 45 38 79 5i 9-16 I 77 79 7"9 10 47 77 48 8-98 2 80 92 9-0 46 18 80 53 9-30 2 78 80 87 ii 38 78 50 9-06 2 76 101 6-8 47 18 76 41 7-63 I 79 68 7'7 12 17 79 19 7-90 2 79 89 8-9 49 2 79 22 9-26 I . 78 81 8'5 IJ 28 78 15 8-83 2 86 44 9-0 49 54 87 i 9-12 18 78 82 8-0 H i 79 7 9-01 2 86 43 8'9 50 15 87 8 9-04 21 78 83 7'9 H 3 79 ii 8-84 2 83 67 9-2 5' 3 83 2 7 9-04 I 251 311 88 9 8-0 2 '4 M + 88 42 8-12 9 1 80 96 8-8 2 51 4 + 80 38 9-36 2 75 94 7'5 H 39 75 4i 7'37 2 75 "9 8-5 51 29 75 24 8^93 2 81 78 9-0 15 21 81 29 9-41 I 77 i4 8-1 5i S 2 77 4i 8-24 I 79 69 8-3 15 24 80 10 8-27 2 87 23 8-7 51 58 88 9 9-16 27 88 n 8-8 17 23 88 15 8-69 88 78 103 5-6 S 2 47 79 i 7-01 2 8 1 80 9-0 19 17 8 1 54 9'44 i 78 104 8-9 52 50 78 39 9-16 I 84 42 8-5 19 36 84 37 8-81 5 79 9 8-8 53 3 80 2 8-27 2 82 55 87 20 8 82 34 8-86 i 86 45 9'3 53 5 6 86 49 9-23 8 83 56 8-0 20 2O 83 23 7'94 i 82 76 8-0 54 '7 82 31 77 1 i 81 81 9-0 20 48 8 1 40 9-69 i 74 "33 90 54 5 2 75 6 8'93 2 261 321 84 43 9-2 2 22 21 + 84 5i 9-62 3 75 122 8-8 2 55 7 + 75 36 8-39 2 77 84 7'5 22 31 77 '3 8-09 2 77 105 8-5 55 ii 78 10 8-62 I 80 80 8-4 23 3 81 12 9-81 I 79 9' 8-3 55 43 79 54 7-99 2 83 ;8 9-0 23 7 83 51 9'39 I 84 51 87 55 55 84 28 9-I3 2 85 45 8-6 23 22 85 22 7-48 I I 80 97 5'5 56 1 1 81 5 6-06 2 79 ; 7'5 23 4 1 79 '7 8-09 2 75 124 7'4 56 16 75 *5 9-05 2 76 81 7-0 2 3 44 76 17 8-29 2 83 72 9'3 56 27 84 4 9-64 I 86 38 9-0 25 '5 86 33 8-95 47 83 73 9-2 56 36 83 ii 9-29 I 79 76 8'4 26 44 79 4 8-87 2 76 109 8-9 57 18 76 12 861 I 74 in 7'5 27 47 75 5 7-89 3 84 53 8-5 57 40 84 3 6 8-92 2 271 331 82 59 9-0 2 28 I + 83 ii 8-79 i 76 no 9-0 2 57 53 + 77 8 9-16 I 75 102 87 28 3 76 6 8-92 2 77 i8 8-0 58 16 77 59 8-73 I 78 94 8-5 28 37 79 6 8-8 1 2 87 26 87 58 32 87 33 8-85 87 77 9 2 8'9 29 36 77 45 9-11 2 75 '*7 8'3 58 34 75 43 7-67 2 82 60 9-2 2 9 54 82 24 9'43 I 89 6 9 '4 2 59 59 89 12 10-13 77 93 8-5 30 19 77 12 9-05 2 82 78 9-0 3 o 30 82 47 9-I5 75 '3 8-0 30 31 75 35 8-30 2 8 1 100 9-1 o 31 81 31 9'43 Si 88 9-1 3 57 81 15 9-25 I 77 109 7-0 o 46 77 49 8-25 80 85 9-0 31 19 80 27 9-25 3 89 4 9'4 o 57 89 36 10-27 88 10 9-0 3' 34 89 6 9-89 I 79 94 7'3 i 27 79 45 7'53 2 PHOTOGRAPHIC MAGNITUDES. 18 PHOTOGRAPHIC MAGNITUDES OF STARS. Dec. +75 to +90. B.D. R.A. Den. Photog. \i .,,, No. of B.D. R.A. Dec. Photog. jL/f No. of No. Mag. 1900 *o. 1900*0. Mag. Plates. No. Mag. 1900*0. 1900*0. Mag. Plates. 341 4O1 o h m s o / h m s o / 80 100 8.0 o 3 i 53 + 80 58 9'94 I 83 92 9'3 3 3 6 54 + 83 '2 9*15 2 79 95 8-9 i 58 79 43 8-90 2 75 -49 9-2 37 21 75 3' 9'37 3 77 in n{ 3 45 3 45 78 8 78 8 8-86 io-i 3 I I 85 57 84 69 8-5 8-8 38 25 38 29 85 20 84 22 8*90 8*42 4 4 78 109 7-0 4 ' 78 3 6-99 2 8z 101 8-4 38 5 82 26 8*29 2 76 116 8-8 4 25 76 12 975 I 78 133 8-9 39 '7 78 36 9'3 2 85 53 8-8 4 33 86 3 8-88 32 76 137 8-2 39 36 76 18 8*95 2 85 54 9-2 4 35 85 22 9-25 4 79 "7 8'9 42 49 79 24 8-79 2 87 27 9-0 4 38 88 o 9-81 3 83 94 9-0 43 5 83 16 9*06 2 79 96 8-1 4 46 79 58 9'oi 2 76 141 9-0 43 36 76 25 8*79 2 351 411 80 103 8-6 3 5 4 6 + 80 21 870 2 81 132 9-2 3 43 53 + 81 44 9*38 2 8 i 107 7 '4 6 31 81 47 8-55 I 76 142 8-2 44 ' 77 7 8*50 2 76 119 8'3 7 10 76 39 875 I 83 96 87 44 6 83 49 9'44 2 77 H5 6-2 7 37 77 22 575 I 79 I2O 8-6 44 14 79 55 8*61 2 82 82 r 5 8 6 83 10 8*87 2 79 121 8-7 44 25 79 '3 8*46 2 84 59 6-0 35 84 33 6-47 3 81 134 7'8 45 29 81 35 8*09 2 84 61 9-0 8 50 84 15 9'34 2 76 H3 8-9 45 34 76 30 9*56 2 76 I2O 8*2 8 5' 76 42 8-04 I 81 135 7-8 45 47 81 17 7-65 3 83 79 8-2 8 51 83 41 8-41 3 80 121 7-8 46 19 80 56 8*41 2 75 '3 9-0 9 9 76 2 8-93 2 82 105 9-0 46 28 82 35 9*01 2 361 421 88 16 9-2 3 9 -8 + 88 27 9-71 2 76 144 9-0 3 4 6 55 + 76 29 9*16 2 75 i3i 8-4 9 38 75 39 8-23 2 78 136 8-8 47 45 78 43 8*99 2 80 1 06 8-9 II 22 80 31 9-38 2 75 '54 8-2 48 24 75 53 8*85 2 77 i'9 7'5 '4 38 78 7 8-06 2 77 138 7-0 49 3 77 55 775 2 76 121 8-0 '6 35 76 48 8-65 I 79 '24 8-9 5 5 79 '3 8-27 2 76 123 9-0 '7 33 7 6 57 8-72 I 79 "S 8'3 50 23 79 3 7-6 1 2 8l 112 8-4 18 15 81 27 8-68 2 80 123 8'3 50 42 80 42 7'53 2 77 123 7-1 18 30 77 4 8-23 2 75 156 8-0 5i 38 75 52 8*51 2 80 109 9-0 8 37 80 22 9'59 2 79 126 8-3 52 27 79 20 8*50 2 89 3 8-8 18 54 89 41 8-90 95 86 54 8-9 S 2 36 86 40 8-69 62 371 431 74 152 9-0 3 19 13 + 75 9'3i 2 79 I2 7 9'5 3 53 9 + 79 29 8*92 2 81 114 9-1 20 3 I 12 9-14 2 75 160 7'5 53 9 76 8 775 2 76 125 8-6 20 4 76 16 8-29 I 80 125 4'9 53 '7 80 25 5*60 3 82 88 8-8 20 27 83 4 9-04 2 79 128 9-0 53 4i 79 4 2 879 2 76 126 8-7 20 37 76 30 872 I 87 3i 9-2 53 44 87 16 97 J 2 75 H 9'5 21 33 75 10 9-69 2 78 142 8-0 54 l6 78 41 7-46 2 79 I0 4 9-0 22 36 79 57 9'37 2 86 55 9-0 54 '9 86 13 9'55 I 82 90 8-2 23 23 83 2 8-13 2 77 H 1 8-9 54 22 77 49 9*09 2 78 123 8-9 23 25 78 58 876 2 78 H3 8-5 54 55 78 9 8*51 2 77 126 8-5 24 26 78 6 7 - 9 o 2 79 '3 87 55 4 79 8 8-87 2 381 441 75 Hi 8-4 3 24 41 + 75 24 8'99 3 78 145 8-4 3 5 6 43 + 78 16 9'37 I 86 49 9'5 26 23 87 o 9-19 IO 78 146 7'2 57 9 78 46 775 2 75 H3 6-5 27 21 75 24 7-00 3 79 '3 1 8-8 57 24 79 34 9*21 2 82 94 9'3 28 45 82 10 9'53 2 83 100 8-8 57 5 2 83 39 8-68 4 76 128 7'S 29 40 76 51 774 2 76 15. 87 58 21 76 27 9'44 i 84 65 8-9 29 52 84 56 9*06 2 79 132 9-1 58 39 80 i 9 -2 3 2 77 '3i 8-4 31 23 77 44 9-18 2 76 153 8-8 59 37 76 49 8*80 I 75 H4 8-6 32 27 75 24 8-81 3 77 '45 8-4 3 59 45 78 7 9-18 2 83 90 9-2 33 H 83 -5 9-80 I 80 127 6-8 4 ' 5 80 17 7*10 3 74 '67 8-8 33 24 75 2 9-18 2 83 102 87 i 23 83 5 9*06 3 391 451 83 9 1 7-3 3 33 42 + 83 H 7'53 2 81 147 7'5 4 i 57 + 81 43 7*25 2 79 no 7'8 33 48 80 o 8-45 3 75 165 87 2 3 76 i 8*63 2 86 51 6-0 33 S^ 86 20 6-05 48 75 166 8-5 z 5 76 2 9 -I 5 2 79 in 8-9 34 13 79 -5 8-81 2 75 l6 7 8-5 2 24 75 34 8*64 2 77 133 7'2 34 5 6 77 48 6-91 2 8 1 149 8'3 3 i 81 ii 7-87 3 78 131 9'3 34 58 78 50 9-05 2 81 150 7'9 3 39 81 23 7*36 3 81 125 7 - 9 3 6 17 81 14 8-56 2 80 129 8'3 4 '4 80 10 8*78 3 86 52 9'3 36 31 86 25 9-46 2 78 15 9-0 4 32 78 22 9*28 i 77 134 8-0 36 47 78 i 773 2 79 J 3 6 8-8 4 40 79 7 9*05 2 75 '47 8-2 36 53 75 27 8-51 2 85 62 9-0 4 42 85 38 9*01 5 343-4. Images touching; measures unsatisfactory. 392. SS Ce ihci, 1911 AUK- I4 d '485, 8 m *45 ; Nov. 9 d *33i, 8 48 ; 1912 Mar. 7 d '464, 8 m '4i. 402. Variable, 1911 Aug. ^'l^S?, 9">'6o : 1912 Mar. 7 d *464, 9 m *iz ; Dec. 9 d '6i8, 9 m '39- 4"- As one mass. Components 9 m '3, io m "5. ROYAL OBSERVATORY. GREENWICH. Dec. +75 to +90. 19 B.D. E.A. Dec. Photog. \r_ No. of B.D. R.A. IQOO "O. Dec. IQOO'O. Photog. | "j Mag. . 1900*0. 1900*0. Mag. Plates. LU. o . nates. No. M.!-. No. Mag. 461 521 h m s h m s / 87 33 8*5 4 4 5 1 * 4-88 2 8-53 9 87 35 9*0 4 35 38 + 87 42 0" 3 o 10 83 104 5*0 4 59 8 3 34 5'43 4 75 190 8-9 3 6 53 75 45 8*93 2 85 63 5 6 85 7 6*86 5 82 125 8*5 36 58 83 i 7'35 3 J ~r 77 15 7*0 5 36 77 5 778 2 76 176 8*8 36 59 77 3 8*99 i 83 107 79 '37 9*2 8-8 6 35 6 44 83 34 79 8 9*23 8-58 2 2 79 -55 86 65 8*4 8*3 37 5 3 s * 79 3 8643 8-53 8*68 ft 2 6 9 78 15' 8*2 6 50 78 45 7*92 2 74 ZI 7 9-0 38 8 75 3 9'68 I 82 113 C-0 7 59 83 6 6*07 3 77 '7 2 7-8 39 H 77 23 7'93 I 75 -73 6*8 8 12 75 5* 6-51 2 Si 168 8*5 39 2 9 8 1 28 7*82 2 89 7 ; 9'3 8 37 89 '3 9*86 3 75 '93 7*0 39 3 2 75 3 Z 7'54 3 471 531 84 78 7'5 4 8 57 + 84 14 8*40 4 So 154 9-2 4 41 26 + 80 39 9-39 3 80 133 57 9 38 80 35 6*43 2 80 155 5-5 4- 37 81 2 30 8x; 2 83 III 8*7 ii 38 83 57 8*55 4 77 J73 8*3 4' 55 77 2 7 56 I 75 '75 8*5 ii 44 75 14 8-59 2 83 126 8-5 42 26 83 19 8-77 3 80 134 7 '4 12 80 42 7*00 2 84 9 9*1 43 45 84 46 9*25 2 79 142 8-9 12 l6 79 2 5 9*02 2 Si 170 8-4 44 9 81 7 8-57 2 79 '43 8*0 12 37 79 z8 8*00 2 74 221 9'4 44 17 75 3 10*04 O I 80 137 9*1 14 15 80 25 9-24 3 74 2ZZ 9'4 44 2 9 75 2 10 18 1 81 152 9'3 14 41 82 7 9*18 i 77 175 8-7 44 3' 77 17 8*59 I 80 138 8-7 16 23 80 34 9 - 35 2 74 "3 8*8 44 57 75 2 979 I 481 541 74 z01 ' 74 zoz 9*1 9 '4 4 ,6 25 1 6 40 +75 6 75 2 9*13 9*65 Z I 77 '78 86 66 7'5 S-o 4 46 o 46 i- + 77 37 86 10 7*98 7*65 2 26 77 161 8*9 17 7 77 34 8*98 1 76 186 8*8 46 36 ! 76 20 8*99 I 85 64 9*0 17 29 85 H 9*01 3 80 156 9*1 46 42 80 38 879 o 3 77 162 17 50 77 Z 4 8*14 i 79 '59 8*8 47 4 79 4 6 9-08 2 80 140 7'4 19 9 So 40 7'3 2 2 82 132 8*6 47 49 : 8z 2Z 8*83 I 84 83 9-1 19 31 8448 8*86 4 84 93 8-5 47 56 85 4 9-03 3 -9 -45 8*5 19 34 80 2 9-14 I So 159 8-6 48 19 ' 80 29 8*58 8O 3 75 '82 8-0 9 45 75 48 8*72 2 82 133 9*0 49 40 82 25 84 i 85 65 8*5 21 22 85 Z 9 8*43 7 83 129 9*0 49 49 8 3 2 4 9*20 i 491 551 83 114 7'4 4 21 32 + 83 5 7'94 4 86 67 8*7 4 50 50 +86 44 9*03 57 78 1,7 7'5 22 8 /8 46 7*29 77 179 8-3 5' 45 77 5 2 9*04 2 80 143 8*8 23 17 80 57 9' 2 3 2 76 187 8*0 5 1 54 76 41 8*20 2 84 85 9-0 2 4 17 84 26 8*87 2 82 136 9-3 5 Z 39 82 21 9-03 1 76 165 8*0 2 5 5 76 46 8*94 I 78 177 8*7 53 4- 78 S^ 9-14 2 76 166 8*8 2 5 35 76 33 8*71 I 76 188 8*i 53 47 7 6 30 8-33 2 76 167 8-6 2 5 45 76 45 8*41 I 79 I(5 3 8*8 54 5 79 21 8*31 2 76 169 8*0 26 45 76 22 773 1 8 1 174 j 9*4 54 49 Si 50 9 2 80 146 8*0 27 14 80 39 8-52 2 75 203 8'3 55 5 75 45 8*33 2 1 79 -49 8*5 27 22 79 34 8-57 I 76 189 8*2 55 Z 9 76 29 8*95 2 5O1 561 88 20 9-2 4 2 7 49 + 89 1 10*10 I 75 Z0 4 9*2 4 55 3 Z + 75 34 9*10 2 83 nt 8*9 28 3 83 33 8*73 3 85 74 6*0 56 18 85 50 6*58 '9 80 147 7-9 28 31 80 21 8-69 2 75 2 7 8-0 56 24 75 21 8*41 2 79 -5 7-0 28 49 79 z8 6*51 2 75 208 7'3 56 29 75 33 7-00 2 80 148 9*1 30 ii 80 58 9*29 2 84 97 8*8 58 14 84 45 8-63 SX' _ 4 78 161 8*1 30 27 78 57 8*36 I 81 177 9*2 59 " 81 49 66 2 78 162 8*4 3 54 78 9 8-66 I 79 l6 5 8*9 59 > 6 79 37 9*20 2 86 62 9'5 3 I 22 86 9 9 * 97 1 85 75 8-5 4 59 49 8 5 37 8*62 7 76 173 8*9 31 24 -6 50 8*46 I 75 210 8-5 5 o Z 3 75 20 8-93 2 80 149 8*1 3i 34 80 28 8*66 2 81 178 8*7 o 26 81 6 8*78 3 511 571 79 >5 Z 9'3 4 32 o + 79 53 9 >9 1 76 190 6-7 5 o 30 + 76 21 6*19 2 7-5 1/4 6-3 32 8 76 25 6*73 I 75 ZI2 8'3 i 31 75 36 8*45 2 84 88 77 33 2 3 84 42 7*52 4 75 Z i3 8-3 2 48 75 3 8*31 2 84 87 9*0 33 5 85 6 9*13 2 77 187 8-5 4 Z 3 78 o 8-45 2 83 121 8-5 34 7 83 7 8*10 3 75 2I 7 7*6 4 44 75 5 8*15 2 81 162 9*2 34 2 5 81 19 8*92 2 83 137 8*7 4 53 83 43 8*45 2 85 68 34 26 86 o 10-00 I 78 179 8*8 5 7 78 56 9-09 2 86 64 9*2 34 45 86 18 9*10 9 78 180 8*0 5 Iz 78 16 7-96 2 75 189 6*0 35 2Z 75 4-5 6*18 2 8 5 77 9*0 5 59 85 10 9*12 2 85 69 9'4 35 3 86 o 8*97 6 79 l6 9 5' 2 6 4 79 7 5'54 2 548. RS C'ephei, 1911 Nov. 9 d *33i, 8 m *73 : 1911 Mar. 6 d *5;8, 8 m *5o ; Mar. r d '4 6 4> 8 m *52. 20 PHOTOGRAPHIC MAGNITUDES OF STARS. Dec. +75 to +90. B.D. R.A. Dec. Photog. \r No. of B.D. E.A. Dec. Photog. M_ No. of No. Mag. 1900*0. 1900 Mag. Plates. No. Mag. 1900 1 900 *o. "g- Plates. 581 641 O h m s o / O h m a o / 79 17 9-1 5 7 47 + 79 39 9-19 2 S^ 1 14 8-9 S 4 6 i7 + 84 6 8-63 3 75 220 7'5 8 42 75 5 7'93 2 85 85 9'3 46 52 85 i7 9-40 3 8 1 1 80 9-1 8 53 81 16 9-11 2 88 29 8-8 47 8 88 44 9-69 4 87 38 9-3 9 3 87 25 9-89 I 86 77 8-8 47 2 86 26 9'39 4 85 78 7'0 9 52 85 35 6-45 15 85 87 9-0 47 35 85 7 975 i 78 183 6-8 10 25 78 19 7-56 2 85 86 9'5 48 21 85 43 9'59 i 75 222 8-7 ii 15 75 54 8-67 2 84 117 9-0 49 12 84 7 8 74 3 88 26 9'4 1 1 20 88 34 io - 32 I 75 247 6-2 51 22 75 35 7'44 2 78 184 9-0 ii 27 78 46 8-95 2 80 190 87 52 5 80 2 8-80 3 78 185 8-9 ii 34 78 52 8-93 2 76 221 8-8 53 2 76 10 9-24 i 591 651 83 '4 1 7'i 5 ii 48 83 47 6-90 3 84 118 8-8 5 53 4 8 + 84 12 8-84 3 82 143 8'9 12 10 82 19 9'38 2 78 210 9-0 54 38 78 59 9-08 i 77 192 8-9 12 15 77 16 9-04 2 76 224 56 24 76.46 9-30 i 80 168 8'4 12 56 80 58 877 3 74 273 8-8 57 17 74 43 9-00 i 78 187 7-0 13 7 78 13 6-98 2 77 229 7'5 57 59 77 18 8-11 i 77 195 7-0 14 2 77 53 6-57 2 80 192 8-7 58 5 80 ii 8-86 3 81 183 8-6 H 25 81 37 8-87 2 78 214 8-5 59 ii 78 55 9-07 i 79 ! 73 77 16 41 79 46 7-20 2 80 198 8-5 5 59 44 80 o 871 3 76 198 8-5 1751 76 28 8-83 2 76 226 7*5 6 o 37 76 31 8-06 i 78 190 77 18 25 78 14 7-50 2 79 ! 9 6 7-8 o 38 79 21 7-83 2 6O1 661 77 198 8-0 5 18 44 + 77 7 9-21 2 80 202 7-8 6 211 + 80 23 775 4 81 187 8-6 20 25 81 19 8-57 2 79 i9 8 7'S 4 '5 79 49 875 2 77 199 8'5 20 36 77 5 1 9-28 2 80 204 8-1 4 35 80 10 9'oo 2 78 192 9 'o 20 43 78 31 9-14 2 76 233 8-6 4 4 6 76 48 8-87 1 78 193 77 22 10 78 18 7-88 2 85 91 9-1 4 48 85 24 965 I 75 228 8-8 25 10 75 9 873 2 76 234 7'5 4 58 76 52 8-94 I 7O 182 of 25 33 79 16 9 - 57 2 78 219 8-0 7 10 78 26 8-87 I /y ' oi I 25 34 79 l6 2 86 79 7-0 8 3 86 46 7-51 63 76 203 7'8 25 36 76 42 8-13 2 80 206 8-1 8 54 80 55 8-66 2 76 204 8-2 25 47 76 18 9 - oi 2 88 33 9'3 8 59 88 36 IO-02 I 611 671 77 201 8'3 5 26 18 + 77 28 7-65 2 83 164 8-9 9 39 83 49 9-06 2 76 205 9-2 26 39 76 9 8-87 2 78 220 8-1 9 53 78 50 878 2 76 206 8'3 27 43 76 24 7'93 2 75 253 7'9 10 10 75 4 2 878 2 77 205 8-2 27 44 77 3 8-97 2 76 237 8-8 ii 18 76 17 8-65 I 80 177 8-2 28 4 80 20 8-61 3 77 235 8-5 ii 44 77 3 2 8-40 2 77 206 9-0 28 18 77 39 9-21 2 80 207 8'3 ii 45 80 21 9-06 2 79 183 77 28 50 79 34 8-48 2 85 93 9'4 12 15 85 5 9-52 2 85 80 6-0 29 54 85 9 7-46 6 79 200 8-3 12 24 79 +3 8-95 2 83 '49 87 ' 3 19 83 34 8-60 i 78 224 7-8 13 I 78 i 8-54 2 78 197 8-2 30 28 78 12 8-60 2 77 237 77 13 25 77 58 8-32 2 621 681 86 75 9-0 5 3 5 1 + 87 o 9-38 8 76 240 7-8 6 13 30 + 76 4 8-43 I 76 208 8-6 31 7 76 2O 8-63 2 78 225 7"5 13 33 78 20 8-98 2 77 207 8-8 3i 29 77 34 9-01 2 82 168 8-5 13 37 82 36 8-93 2 77 209 8-8 3' 45 77 3 8-94 2 77 239 8-4 14 21 77 3 8-69 2 75 233 87 33 15 75 28 8-85 3 77 240 87 '4 35 77 20 8-56 2 80 181 7-9 33 4 80 34 7-82 3 8 5 94 8-9 15 18 85 6 945 2 85 81 8-0 34 38 85 16 8-24 6 79 2OI 7'S 15 S 2 79 32 7'97 2 81 192 8-5 34 59 81 45 8-51 2 77 242 9-1 16 6 77 6 9'33 I 84 1 10 9-0 36 36 84 49 9-36 3 Si 218 9-0 16 18 81 23 9'33 2 75 236 7'5 36 37 75 41 7.76 3 79 202 7-0 16 33 79 2 7-67 2 631 691 81 194 8-0 5 38 26 + 8l 20 8'43 2 80 210 7' 2 6 16 57 + 80 38 8-26 3 85 82 8'9 39 8 85 36 9'53 2 77 243 8-3 17 20 77 6 9-12 2 77 217 8-5 40 9 77 54 8-91 2 88 35 9-0 17 40 88 20 9-29 12 82 152 7-6 40 19 82 44 77i 2 78 226 7'5 17 41 78 14 6-83 2 76 211 8-1 4 3' 76 51 8-17 I 76 243 8-5 i7 53 76 1 1 8'39 I 85 83 9-2 41 i 85 58 9-38 6 79 205 8-6 18 14 79 15 872 2 79 188 9-0 42 36 80 o 9-32 2 77 244 8-8 18 49 77 45 8-48 2 84 112 9-0 43 38 84 59 8-92 4 76 244 7'5 20 57 76 56 8-48 2 75 240 9-1 44 i 75 18 9'44 2 77 247 7'5 21 7 78 o 7'37 2 87 41 7-9 45 35 87 20 974 3 86 86 8-9 23 86 3 8-99 17 ROYAL OBSERVATORY, GREENWICH. Dec. + 75 to + 90. 21 B.D. R.A. Dec. Photog. \r._ No. of B.D. E.A. Dec. Photog. - o - 1 900*0. 1 900 *o. Slag. Platj> 1900 o. I OOO'O. *'' pi o fi,c No. Mag. L Id LCb. No. Mag. 701 761 h m s o / o h m a O / 79 208 6-3 6 23 6 + 79 4i 6-65 2 76 268 9-2 7 5 49 + 76 I 9-14 2 79 209 8-0 23 18 79 l2 7'97 2 81 242 6-3 6 24 81 26 6-18 2 82 177 6-7 23 23 82 12 6-70 2 78 246 7-0 7 44 78 5 7-86 2 82 176 8-8 23 3 2 82 30 9-19 I 81 243 9-0 8 12 81 10 8-84 2 87 45 8-9 24 ! 9 87 23 9-08 27 75 296 7-0 8 46 75 16 6-74 3 75 258 7-6 24 5 6 75 47 8-ii 2 82 201 5'5 10 3 82 36 6-65 i 78 227 6-0 24 57 78 5 6-94 2 78 250 6-5 10 8 78 26 8-1 1 2 75 260 8-8 27 43 75 20 9-09 2 86 102 9-1 10 24 j 86 33 8-49 46 80 217 7'3 29 3 8O 20 8-07 3 78 251 7-0 n 7 78 14 7-37 2 79 212 5'5 29 10 79 40 5-81 2 86 103 8-2 n 29 86 35 8-n 4 6 711 771 75 263 8-5 6 29 n +75 5 8-49 2 77 284 8-5 7 i3 35 + 77 42 8-40 2 75 264 8-0 29 54 75 9 8-01 3 79 237 8-3 13 38 79 5 8-54 2 76 249 7'5 3 7 76 41 7-68 2 75 3 77 13 38 75 48 7-17 2 77 254 8-9 32 55 77 3* 9-03 2 84 152 8-0 13 44 84 24 8-88 3 77 255 87 33 29 77 29 8-52 2 78 253 8-7 14 42 78 24 9-04 2 86 92 9-2 33 58 86 o 9-72 2 82 204 8-5 H 55 82 12 8-52 I 77 256 8-3 33 59 77 5 9-03 2 81 252 7-0 16 27 81 6 7-20 2 84 '35 8-2 34 4 84 47 7-90 5 88 39 8-5 16 37 87 57 9-02 35 86 91 9-0 34 58 86 28 9-15 13 77 286 7-4 17 2 77 9 8-04 i 87 46 8-5 35 28 87 32 8-95 75 78 254 6-8 17 31 78 54 7-58 2 721 781 85 98 8-6 6 36 7 + 85 42 9 "49 3 75 34 7-6 7 17 48 + 75 o 8-34 2 78 233 7-8 37 10 78 12 8-27 2 77 289 8-9 18 29 77 1 6 8-91 I 77 259 7-8 37 26 77 20 7'55 2 75 35 8-0 18 56 75 32 8-04 2 78 234 7'3 38 44 78 7 7-86 2 82 207 8-9 20 6 82 53 8-62 I 89 9 9'i 38 56 89 28 lo'og I 77 290 8-0 22 2 77 3 9-15 I 81 227 8-8 39 28 81 3 9-01 2 80 233 8-0 2 5 II 80 47 874 2 85 101 8-9 40 4 85 20 8-86 5 76 284 7'3 25 47 76 , 7'97 I 83 172 8'5 41 6 8 3 45 9' 12 2 83 191 8-0 25 56 83 18 8-96 3 82 189 9-2 42 4 82 44 9-13 I 82 213 7'5 27 41 81 55 77 1 i 79 218 4 2 17 79 5 8-75 2 75 312 77 29 10 75 48 7-88 2 731 791 "5 272 9'4 6 43 26 + 75 i7 9'33 2 77 2 93 8-2 7 29 15 +76 59 8-16 I 81 228 9-1 45 2 81 9 9-25 2 83 195 9-0 30 6 82 57 8-88 2 75 273 7'5 45 6 75 19 8-00 3 76 292 8-0 31 24 76 18 9-15 I 77 266 47 45 29 77 6 5'94 2 76 293 8-5 32 4 76 2 8-3, I 79 222 8-0 45 59 79 18 8-56 2 77 297 8-0 34 29 77 H 8-31 I 80 225 9*2 46 27 80 8 9-38 I 76 296 8-6 35 4 -6 16 8-93 I 75 276 8-2 47 38 75 4 8-24 2 80 237 8-7 36 52 80 46 9'55 2 83 177 9-0 47 43 83 9 9-42 I 78 270 8-0 37 ii 78 28 8-13 2 89 10 9'5 49 ii 89 5 10-19 I 84 161 9-3 37 13 84 n 9-49 3 86 96 8-5 5O 12 86 29 8-92 45 81 257 7'2 38 55 81 36 8-25 2 7*1 801 83 178 8-9 6 50 23 + 83 9 8-97 2 75 3i 6 8-8 7 39 16 + 75 29 8-92 3 75 281 6-8 50 45 75 22 7-31 I 80 238 6-5 39 4 6 80 31 7-04 2 K 1237 7-8 5 47 75 23 9-36 I 84 163 9-0 40 4 84 ii 8-95 3 75 280 7-0 50 48 75 33 7-67 2 86 107 9-2 40 10 86 37 9-32 6 85 >5 8-2 5> 7 85 54 8-12 17 79 2 5 8 8-8 40 1 1 78 59 8-80 2 76 258 8-0 52 41 76 19 8'80 2 79 259 8-0 40 38 79 46 877 2 83 181 9-0 53 9 83 i 971 I 77 302 9-0 43 12 77 53 8-36 2 80 227 8-6 53 ii 80 42 8-03 3 80 240 6-5 43 21 80 7 7-91 2 87 51 5-0 53 44 87 12 6-55 70 77 303 7-0 43 29 77 50 6-89 2 82 194 8-0 54 37 82 36 874 i 84 168 7-8 45 4 6 84 4i 7-35 4 751 811 78 240 67 6 57 59 + 78 55 7-01 2 78 273 7-7 7 45 54 +77 55 8-54 2 89 ii 9'5 59 7 89 2 10-69 i 86 109 9'i 46 7 86 44 9 - 9 o 2 83 182 8-2 59 '3 83 39 8-34 3 86 no 8-7 46 56 86 40 9'59 3 77 276 8-5 f 59 3- 77 13 8-36 2 80 241 87 48 16 79 54 8-55 2 77 277 9-2 6 59 43 77 5 9'2I 2 82 122 9-1 48 59 82 41 9-17 I 76 263 9-1 7 o 27 76 33 9-06 2 79 265 5-8 49 4 79 45 5'49 2 81 239 7-8 2 17 8l 2 9-03 2 75 321 8-1 49 9 75 43 873 3 75 291 8-3 4 ! 75 22 8-25 2 80 242 8-9 49 22 ; 80 30 8-96 2 78 243 8-0 4 47 77 57 9-30 2 82 224 8-7 50 26 81 59 9-22 I 80 230 7'4 5 46 80 48 7'94 4 82 226 9-0 50 50 81 58 9-19 1 741-3. Images touching ; measures unsatisfactory. 22 PHOTOGRAPHIC MAGNITUDES OF STARS. Dec. +75 to +90. B.D. R.A. Dec. Photog. \Ke(f No. of B.D. R.A. Dec. Photog. No. of No. Mag. 1900*0. 1 QOO 'O. JYU". Plates. No. Mag. igoo'o. i 900 'o. Mag. Plates. 821 881 O h m s o o h m s o / 76 302 8-5 7 5> 5 + 76 50 8-97 2 80 267 8-3 8 35 6 + 80 50 8-57 2 76 303 8-8 5' 13 76 20 9'3 2 84 186 8-0 35 21 84 1 6 7-82 3 78 2 75 8-5 51 41 78 33 8-81 2 84 187 9-2 35 28 83 55 9-08 3 88 41 9'3 5i 5 1 88 40 9-80 5 78 292 8-6 35 55 78 12 8-85 i 86 113 7-2 52 26 85 59 8-00 23 80 268 8'3 36 31 80 22 8-61 3 82 228 9-2 52 33 82 45 9-14 i 78 293 6-5 37 3' 78 32 8-57 i 77.311 87 5 2 57 77 23 8-81 2 75 350 9-0 39 59 75 29 9'i3 2 84 169 6-0 53 i 84 21 6-32 4 80 272 7'3 40 51 80 24 7 - 33 3 84 170 9'3 53 53 84 3 6 9'43 3 83 232 7-0 41 48 83 6 7-91 2 81 263 8-1 54 28 8l 20 9-12 2 86 124 9'4 4i 55 86 49 10-04 I 831 891 82 231 8-3 7 55 8 + 82 3 8-38 2 81 273 7-6 8 42 47 + 81 40 7-80 2 78 278 7'5 57 4 77 5 6 8-10 2 87 72 9.3 44 > 6 87 10 9-69 2 79 * 6 7 8-5 57 29 79 3' 879 2 83 233 7-0 44 32 83 8 7-22 2 77 3i3 8-0 58 i 76 56 8 86 2 78 297 6-9 45 22 78 32 7-38 I 89 '3 7-0 58 3 88 56 7-03 89 80 276 87 45 4' 79 52 9-24 2 75 325 8-8 7 58 32 75 '5 871 2 86 126 8-0 47 i 85 57 8- 99 I I 75 3 2 7 8-4 8 o 45 75 40 9-12 2 85 132 8-2 48 16 85 6 8-34 5 79 269 7-8 i 6 79 48 8-54 2 83 236 8'5 49 8 83 34 9-04 2 K 1519 9-2 i 8 79 48 8-69 2 76 335 7'5 5' 44 76 48 8-24 I 76 307 7-8 ' 43 76 8 8-18 2 79 294 7-0 5' 47 79 44 7 "47 2 841 9O1 84 173 8-8 8 i 52 + 84 19 8-34 4 77 35' 9-0 8 S 2 29 + 76 51 8-83 I 83 207 8-2 3 36 83 24 7-81 81 278 7'9 S 2 41 81 26 7-89 3 76 308 7'5 4 H 76 3 7-91 2 76 336 8'3 52 47 76 5 8-28 i 76 309 8'3 4 55 76 3' 8-24 2 85 135 9-0 53 '9 4 53 8-99 3 82 235 6-5 5 '3 82 44 6-21 2 81 279 8-4 53 25 81 29 8-75 3 84 175 9-2 5 34 84 27 9-66 2 83 238 9-0 53 57 83 3' 8'99 2 76 310 6-0 6 59 76 4 6-36 2 75 359 8-4 54 2 75 5 8-83 2 88 43 9-2 7 43 88 41 9'47 9 84 196 6-0 54 32 84 35 6-68 3 76 315 8-3 8 28 76 12 8-90 2 76 338 9-0 54 48 76 44 9-25 i 87 63 9'4 8 33 86 56 9-98 2 81 282 67 56 18 81 14 6-48 3 851 911 76 316 8-2 8 8 48 + 76 41 870 2 84 199 8-6 8 56 34 + 84 2 8-38 3 75 334 6-5 10 9 75 8 7-00 3 83 240 9-0 5 6 47 83 >7 9'i3 2 78 284 7'5 10 46 78 15 8-10 2 83 239 9-0 57 2 83 45 8-82 3 77 327 7-0 ii 44 77 i7 7-91 2 77 355 87 57 S 2 77 3i 8-69 i 84 178 8-9 14 19 84 33 9 - 37 3 86 132 9-0 59 9 86 18 9-23 2 79 2 72 8-6 IS '3 79 44 8-96 2 75 362 8-9 8 59 46 75 3 8-95 2 84 179 8'3 15 28 84 47 8-43 IO 81 285 87 9 i 9 81 25 8-55 3 77 33 77 l6 22 77 23 7-86 2 75 365 7-0 2 51 75 4' 8-16 2 78 287 6-8 16 58 78 33 770 2 83 243 8-3 3 3 83 2 8-26 2 89 15 9-2 19 9 88 54 9-83 I 79 300 7'3 3 59 79 4 2 7-58 2 861 921 86 120 8-5 8 19 49 + 86 8 9-14 5 82 265 8-8 9 4 8 + 82 45 8-59 I 76 326 8-8 20 18 76 4 8-83 2 77 359 6-8 5 16 77 29 6-91 1 80 258 8-8 20 52 79 5' 877 3 78 301 9-0 6 14 77 53 9-41 I 75 34i 8-3 23 28 75 3i 8-34 2 83 H5 8-6 7 5 83 20 8-50 I 84 183 9-2 23 33 84 28 9'39 3 78 33 7'9 7 42 7 8 2 3 8-45 2 77 337 7-2 24 20 77 23 7-48 2 85 142 8-5 8 42 85 38 876 I I 78 288 9-0 24 36 78 41 9-08 I 80 287 7-8 10 14 80 33 8-49 3 75 34 2 6-4 25 10 75 4 6-45 3 77 364 8-3 11 20 77 39 8-57 i 85 128 7'5 25 20 85 24 7'55 12 75 37 7'3 I I 26 75 20 7'34 2 87 68 8-8 26 9 87 15 874 70 82 268 8-5 II 28 82 18 8-55 I 871 931 87 69 9-1 8 26 59 +87 i 9'53 8 83 248 8-4 9 H 32 + 83 7 8-46 I 87 67 9-1 27 ii 87 46 9 '47 7 76 348 8-1 ii 49 76 6 7-88 I 82 251 87 27 16 82 41 8-86 2 75 373 8-4 13 16 75 24 9-08 2 85 129 8'2 27 36 ! 85 33 9-17 4 75 374 8-9 14 9 75 40 8-68 2 82 253 7-0 28 20 82 36 6-63 2 79 35 7'4 H i3 78 52 8-59 2 89 12 9-1 3 32 89 32 9-85 2 Ki794 8-0 H IS 78 5' 8'93 2 8 7 7 I 9-2 32 16 87 13 9-22 20 84 206 8-0 H 53 84 10 8-87 3 80 266 8-4 32 4' 80 i 872 2 75 377 6-2 17 22 75 32 6'2O 2 8 1 270 8-0 33 48 ' 80 51 8-39 2 87 78 8-0 1 7 5 8 87 1 8 8-21 71 78 291 7-0 35 2 i 78 3 7-64 I 77 370 8-5 19 2O 77 3i 8-49 2 ROYAL OBSERVATORY, GREENWICH. Dec. +75 to +90. 23 B.D. E.A. Dec. Photog. M ., if No. of B.D R.A. Dec. Photog. No. of No. Mag. 1900 I9OO'O. .Mag. Plates. No. Mag. 1900 'o. 1900 Mag. Plates 941 1001 o h m s / O h m s / 85 147 8-5 9 i9 3i + 85 32 9-50 3 76 377 8'3 10 5 32 + 76 42 9 -22 2 83 256 20 29 83 22 7-24 I 79 328 6-7 5 49 79 27 6-82 2 88 54 9'3 21 14 88 45 9'94 I 76 380 8-3 7 34 75 56 874 I 78 310 8-2 22 l8 78 8 8-88 2 75 409 8-5 8 17 75 42 9-08 2 81 302 4'3 22 51 8 1 46 5-65 2 76 381 8-8 8 18 76 21 9'3 ! I 84 212 8-5 24 I 84 17 8-40 2 76 382 9-0 9 o 76 10 9-17 I 78 312 8-7 26 8 78 41 8-83 2 85 158 9-0 10 51 8 5 24 9-33 3 75 3 8 i 9-0 26 15 75 28 9-00 2 79 329 8-0 ii 7 79 l6 8-05 2 83 262 7'5 26 27 82 49 7-52 I 83 287 6-8 ii 43 83 18 77 3 88 55 9'i 27 o 88 13 9-90 I 83 289 9-1 12 34 83 5 9-12 2 951 1O11 76 358 8-0 9 27 25 + 76 37 8-87 2 79 330 7'3 10 13 30 + 78 51 8-24 2 V 87 79 8-5 27 57 87 34 9-11 29 76 385 87 13 55 76 8 9 - 39 75 386 6-8 28 28 75 39 7'44 3 82 300 8-1 14 38 82 i 8-75 8 1 308 8-9 28 34 81 7 8-93 2 82 301 8-6 14 52 81 47 9-02 87 80 8-5 28 56 86 54 9-42 9 84 2 34 5-0 15 9 84 46 5-85 80 295 8-6 30 16 80 34 9-07 2 77 399 9-0 15 20 77 10 9-28 79 316 7'5 30 29 79 17 7-99 2 76 386 77 15 57 76 ,i 8-63 76 360 7*3 3 37 75 53 8-09 2 75 412 8-2 16 6 75 17 8-58 2 84 213 8-3 3 47 84 14 9-26 2 84 237 8'5 16 44 84 4 8-93 3 78 315 8-2 3' 7 78 o 878 2 81 337 7-9 17 13 8 1 42 7-98 2 961 1021 84 216 8-7 9 3 1 3i + 84 12 9-07 2 83 296 8-4 10 18 18 + 83 ii 8-84 2 83 263 8-0 32 34 83 47 8-02 2 76 387 9-0 18 22 -6 13 9-40 I 77 378 7-8 32 5 2 77 41 8-69 2 86 152 8-4 8 34 86 34 8-39 42 84 218 8-3 33 24 83 58 9-03 2 87 89 9-3 18 46 86 52 9-66 5 78 317 6-8 34 ii 78 35 7-28 2 83 297 5-2 18 55 83 4 5-63 2 75 389 6-8 34 38 75 3 6-78 2 76 388 8-0 18 59 76 25 9*13 I 85 150 8-0 34 44 84 57 8-51 5 88 60 8-5 19 25 88 23 8-86 88 77 379 8-4 35 2 5 77 1 8-38 2 85 160 8-5 19 55 85 45 8-56 1 1 79 3'9 6-0 35 27 79 36 6-32 2 85 161 7'5 20 45 84 55 7-89 5 76 363 8'5 3 6 49 76 45 8-63 2 82 305 8-9 20 50 82 7 9-05 2 971 1O31 81 313 9-0 9 37 5 + 81 25 8-98 2 78 349 7'3 10 22 53 +78 i 8-62 I 85 151 8-5 37 29 84 51 8-56 4 82 307 8-2 23 26 82 32 779 2 78 321 9-1 38 5 78 17 9-18 2 8 1 343 6-2 25 44 81 i 7-25 2 87 81 9-2 38 17 87 45 9-50 8 77 44 7-8 26 2 77 i5 8-45 I 78 322 9-2 39 55 78 23 9'io 2 76 393 5-0 26 3 6 76 14 5-92 I 87 82 8-9 40 23 87 37 9'2O 23 82 308 77 27 38 82 6 8-48 2 75 394 8-8 40 29 75 26 9-18 2 78 354 7-8 28 21 78 36 8-26 I 75 395 9-0 41 38 75 4 9'2O 2 76 396 9-1 2 9 15 76 14 9-40 I 83 270 8-5 43 23 83 i 9'ig I 85 165 8-9 29 25 85 8 9-22 3 87 83 77 43 57 87 3 8-50 69 77 45 8-3 30 45 76 58 8-22 i 981 1O41 84 222 8-0 9 44 15 + 83 57 8-44 2 85 166 8-4 10 31 7 + 85 16 9-04 4 78 327 7'i 46 4 78 25 8-35 2 81 347 8-4 32 20 81 45 8-62 2 76 368 8-9 46 30 76 37 9-40 2 77 4 6 8-0 32 39 77 45 8-04 I 81 319 7'4 46 52 80 51 8'39 2 75 420 9'5 33 27 75 2 9'45 2 77 389 7 '4 47 44 77 5 8-19 2 82 313 8-9 33 29 82 5 875 2 84 223 8-8 47 46 84 6 9 -I 4 2 81 349 6-2 33 38 80 57 6-63 2 81 320 8-4 48 32 80 53 8-95 2 79 34 9-0 34 20 79 43 9' J 3 2 76 3"i 7-8 5 47 76 31 9-22 2 78 359 7-0 34 30 77 5 6 7;39 I 84 225 6-5 5 2 37 84 24 7-69 3 75 424 8-4 39 42 75 3 2 75 399 7-2 52 39 75 H .7-69 2 86 154 8-2 40 40 85 54 8-25 21 991 1051 86 143 8-6 9 58 ii + 86 19 8-14 35 77 41 8-3 10 40 53 + 77 24 879 I 83 280 7'i 59 35 82 53 8-63 i 80 335 8-8 4 2 59 80 6 9-19 2 85 154 8-9 9 59 36 84 56 9-62 i 75 425 8-6 43 27 75 34 3 83 281 8-5 1005 83 8 9-14 2 76 402 7-0 43 27 76 31 7-16 i 76 375 8'4 IO 76 17 8-80 2 80 338 7'5 45 47 79 53 8-56 2 7 8 337 8-5 o 58 77 58 8-71 2 80 339 8'5 46 38 80 44 8-92 2 86 146 8-9 2 2O 85 56 8-95 II 85 170 8-6 46 43. 84 53 9-08 3 87 85 8-5 3 59 87 4 6 8-96 81 6-8 47 ii 77 37 8-29 i 85 155 8-7 4 i 85 47 9' 2 3 6 80 344 8-6 49 2 5 80 19 9-07 2 80 313 9-0 5 '2 79 58 9'49 2 80 347 7-8 50 41 So 13 7-50 3 24 PHOTOGUAPHIC MAGNITUDES OF STARS. Pec. +75 to +90. B.D. R.A. Dec. Photog. ~\Jl n it No. of B.D. R.A. Dec. Photog. \r No. of No. Mag. 1 yoo 'o. IQOO'O. Mag. Plates. No. Mag. 1900*0. 1900*0. Mag. Plates. 1061 1121 o h ra s O / o h ni s o / 82 320 8-8 10 51 28 + 81 48 8-91 2 84 260 8-4 1138 + 8 3 59 8-67 3 76 406 7'3 5' 2 9 76 15 775 2 83 336 77 38 4 82 53 8-58 i 78 367 6-2 S I 5 8 78 18 7-01 2 86 171 8-6 38 26 85 54 9-00 16 83 31* 8-5 52 o 83 46 8-56 3 80 363 9-0 39 27 80 34 9-24 2 82 321 8-8 52 3 82 43 9'3' i 86 172 8-2 40 8 86 5 8-61 35 78 368 8-0 52 14 78 14 8-04 2 77 44 8-6 4i 37 77 36 8-97 i 77 417 8-5 52 26 77 o 9'32 I 77 44' 8-5 4> 57 76 47 8-90 i 82 322 8-5 52 51 ^2 13 9-14 2 85 190 9-0 44 35 85 21 9-40 4 75 43i 8-0 52 59 75 '9 8-21 2 85 191 8-4 44 57 85 33 8-61 16 79 34 8 7'3 53 H 79 25 8-09 2 83 339 8-0 45 12 83 ,3 8-41 i 1O71 1131 76 411 8-0 10 56 5 + 75 59 8'2 3 2 76 434 7'3 n 45 23 + 75 55 8-15 i 8' 359 8'2 5 6 39 81 35 872 2 87 99 8-8 47 26 86 47 8-65 58 86 159 8'3 57 o 86 5 8-21 30 8z 348 8'3 48 26 82 30 9-14 i 77 4i9 8-4 57 44 76 59 8-00 2 79 378 8-9 49 46 78 51 9-29 i 86 1 60 9-2 58 13 86 26 lO'OO I 81 388 8-0 52 45 81 ii 8-28 2 83 .18 8-2 10 58 50 83 17 8-50 2 87 100 9-0 54 19 87 33 9-36 2 81 360 8-6 II O 26 80 59 8-88 2 80 370 7'S 54 32 80 9 8-06 2 89 17 9-0 o 26 89 18 9'54 9 87 101 8-0 54 36 87 33 i 7'9 84 82 325 7-0 2 13 82 17 7'6o 2 81 389 6-2 55 6 81 25 7-58 2 78 375 6-5 2 26 78 20 8-42 2 78 402 9-2 55 '4 78 27 9-50 I 1081 1141 86 161 7-2 II 2 30 + 86 ii 7-26 35 79 38i 8-5 n 56 7 + 79 39 8-65 I 81 362 8-2 2 35 81 29 8-09 2 87 102 9-0 56 32 86 55 9-52 6 88 64 7'S 4 '3 88 n 7-19 9 1 76 437 8-8 56 36 75 45 8-97 i 79 352 8-0 5 5 79 27 9-09 2 78 404 8-8 57 44 78 15 8'95 i 78 378 8-0 5 57 78 10 8-80 2 82 355 7-6 58 17 82 15 8-21 i 78 380 8-3 7 2 78 17 8-88 2 76 439 77 58 50 76 37 7-60 i 79 35 6 7-2 8 48 78 51 7-89 2 77 458 8-8 58 59 76 54 9-38 i 80 350 8-0 9 80 5 8-86 2 86 176 57 ii 59 43 86 8 6-64 40 76 421 7-6 10 17 75 54 8-65 2 77 4 6 7'4 12 O I 77 19 7'47 i 78 381 8-5 10 20 77 5 8-85 2 77 461 5-8 O IO 77 28 676 i 1O91 1151 84 252 8-4 II IO 56 + 83 54 9-40 2 75 467 8-6 12 i 34 + 75 '4 879 2 81 366 8-3 II 15 81 31 9'35 2 77 462 8-0 3 59 76 51 8-82 I 75 439 7'8 12 40 75 38 874 2 75 4 6 9 67 4 5 6 75 '3 6-60 2 76 423 8'3 12 46 76 43 8-41 2 78 406 7-0 5 5 77 57 7-66 1 86 163 8-9 13 o 86 36 9-25 H 78 407 9-2 5 24 77 55 9'35 I 77 432 8'3 15 2 7 77 37 8-94 2 78 408 9'3 5 38 78 2 9'39 1 78 385 6-8 I 5 5 8 77 55 7-68 2 78 409 9-0 6 17 77 59 876 1 77 433 8'5 17 I 76 53 878 2 82 356 67 6 31 82 16 7-32 1 86 165 9-0 17 18 86 n 9'3 6 6 85 196 8-2 6 33 85 38 8-48 16 88 65 9'3 19 9 88 26 9-90 i 85 '97 8-9 6 40 : 85 30 9'57 2 1101 1161 81 369 9-0 ii 19 33 + 81 6 9''3 2 86 177 8'5 12 6 53 +86 16 8-76 39 80 356 8-4 20 43 80 19 8-46 2 78 410 9-0 6 55 78 5 8-21 i 82 332 8'3 22 59 82 39 8-99 I 82 357 8-9 7 2 82 16 8-27 i 81 371 8-0 23 3 81 35 8-54 2 78 411 7'3 7 6 78 o 6-66 i 85 '83 7'5 24 23 85 15 7'93 13 78 412 5'i 7 3i 78 10 5-63 i 8" 373 6'2 24 48 81 41 6-25 3 87 104 8-2 88 87 29 8-85 80 86 169 9-1 25 8 86 4 9-28 IO 79 386 9-2 8 30 78 57 9-48 i 84 256 8-6 26 1 1 8 4 '4 9'3<5 2 84 269 7'5 8 47 84 4 8'39 3 85 184 9'3 27 16 85 n 9'47 2 80 377 9'3 8 53 79 58 9-23 2 81 375 9-0 28 o 81 22 9-25 2 79 387 9-1 9 6 79. o 9'23 I 1111 1171 86 170 7-0 ii 28 19 + 86 10 7-38 39 80 380 8-4 12 II 48 + 80 41 7-92 3 82 338 9-0 29 23 81 51 9-46 80 381 8-3 II 52 80 41 7-30 3 78 392 6-2 31 26 78 9 7-96 2 78 416 9-0 13 43 78 6 9-36 i 78 393 8-9 32 15 78 i 8-95 2 87 107 6-5 13 56 86 59 6-54 81 82 342 8-0 33 16 82 38 8-96 I 75 470 5-8 14 21 75 43 5'59 2 75 455 7-8 33 37 75 35 8-92 3 88 71 6-5 14 23 88 15 6-49 91 81 381 9-0 33 48 80 53 9-19 2 88 72 9'3 15 15 88 20 9-56 9 89 1 8 8-9 35 i 8 9 29 9-42 86 87 108 9-2 16 26 87 6 9-69 5 81 384 8-5 35 55 81 8 8-54 2 80 383 8-5 16 29 80 34 9'37 2 82 343 8-6 36 45 82 3 8-88 ' 84 274 7-2 16 32 83 56 8'54 2 ROYAL OBSERVATORY, GREENWICH. Dec. +75 to +90. B.D. R. A. Dec. Photog. No. of B ' D - R.A. Dec. Photog. No. of No. Mag. igoo'o. 1900*0. Mill.'. Plates. No. Mag. iyyu u. 1900*0. Mag. Plates. 1181 1241 o h m s o h m s 83 352 8-4 12 18 52 +83 13 ; 8-87 2 80 398 8-3 12 55 29 ; + 8o 27 8-06 3 86 1 80 8-4 20 22 85 52 ' 8-66 16 76 473 6-0 55 5 76 i 6-92 2 8 1 397 8-5 20 25 ~ 8 1 23 9-04 2 77 49 s 8-8 57 21 76 59 9' 2 3 2 8 4 276 7'9 20 45 83 59 8-37 2 87 115 8-4 58 7 87 12 873 86 83 354 8-6 21 ii 83 13 8-85 2 76 474 8-8 58 12 7 6 38 9-14 2 76 449 8'2 22 2 76 16 8-92 2 79 4 10 9' 58 21 79 27 : 9-47 2 77 474 8-1 22 28 76 56 8-26 2 81 412 7-0 58 38 8, 25 7-67 2 78 420 9-0 22 53 78 30 8-61 2 86 187 7-0 59 43 86 25 7-87 47 82 363 8-9 23 17 82 2 9-31 I 83 373 8-3 12 58 53 83 28 8-n 2 79 393 8-6 24 12 78 47 9-24 2 85 213 8-5 13 o 27 85 7 9-18 2 1191 1251 87 109 9'5 12 24 22 +87 39 lO'OO I 85 214 8-6 13 i 17 , + 84 4 8 9H3 3 82 365 8-0 25 14 82 33 8-1 1 I 78 446 8'5 i 57 77 59 9-29 2 77 475 7-5 27 2 77 14 ' 8-26 2 /8 447 8-0 3 34 78 '4 9-07 2 78 423 9-0 28 i 78 18 9-04 2 75 49 8 9-0 3 46 75 '7 8-79 2 75 473 7-0 28 i 75 22 8-00 I 77 501 9'3 3 4 8 7 6 50 977 2 75 474 87 28 9 75 2 8-89 3 77 502 8-7 3 58 76 50 9-23 2 76 454 6-7 29 48 75 46 8'ii 2 88 76 8-0 4 30 88 ii 8-65 9" 81 399 8-1 30 15 81 30 8-83 2 84 296 | 8-6 4 35 84 10 9-20 3 76 457 8-5 30 58 76 34 8-94 I 87 117 9-1 5 49 86 46 9-33 9 81 400 6-8 31 7 80 48 7-30 3 75 500 8-0 ! 6 41 75 43 8-20 2 12O1 1261 85 202 9-0 12 32 4 +85 14 971 i 76 478 8-8 13 7 27 +76 7 9-12 i i 79 396 8-8 32 4 79 28 9-12 2 78 451 87 8 5 78 34 9' 2 9 I 80 389 : 6-7 34 8 79 46 7-31 2 80 403 8-8 8 57 80 33 8-83 3 86 182 6-5 34 36 86 17 7-18 38 86 1 88 j 9-1 ' 9 40 86 15 9-85 2 76 462 7-2 36 58 76 27 8-28 2 84 301 8-8 9 52 84 12 9-40 3 75 480 ; 8-7 37 4 75 33 879 2 77 506 7-6 10 20 77 43 7'47 2 80 390 9'2 37 6 79 50 9-05 2 77 55 8-3 ' 10 24 76 49 8 84 2 76 463 8'i 37 36 76 44 9-04 2 80 404 ' 7-5 i 12 80 ii 8-20 2 79 4 co ! 8-7 37 44 79 34 8-38 2 84 302 87 , i 13 83 55 9'io 4 84 z86 7-0 37 46 8 4 12 770 3 8 4 303 9 - o i 24 , 84 42 9-30 5 1211 1271 76 464 8-3 12 38 20 + 75 54 8-59 2 81 416 6-3 13 i 32 +81 o 6-94 4 79 403 9-0 4 I 3 78 48 ; 8-70 2 79 4 l8 7'5 3 35 79 H 8-26 2 87 112 9-1 40 39 87 3 974 4 87 118 8-6 3 36 87 39 9-58 7 80 393 8-3 4 4 2 80 9 9-26 2 75 54 9'i 5 S 2 75 5 9-38 2 80 394 9-2 40 50 80 8 9-64 2 82 390 8-4 16 31 82 2 8-42 2 75 483 8-9 40 52 75 33 8-34 2 84 305 8-5 17 24 84 26 9-38 4 75 4 8 4 8-7 4! 20 75 I0 9-3 3 85 222 7-0 18 39 85 17 7'45 7 8 1 402 6-3 4i 54 81 10 6-35 3 79 419 8-5 18 48 78 51 8-80 2 87 113 8-9 42 8 87 2 9-43 9 80 409 8 '9 19 22 79 58 9-28 2 89 21 8-8 42 9 89 14 9'33 86 87 121 8-9 20 14 86 51 9-42 10 1221 1281 80 395 7'4 12 42 19 + 80 28 8'47 3 84 307 8-0 13 20 30 +84 26 7-65 4 79 404 9'3 42 24 79 25 9'22 I 85 224 8-8 21 33 85 29 9-82 76 466 85 43 24 75 47 8-91 ! 2 77 509 8-3 22 41 76 49 9-09 86 184 8-8 44 5 86 o 9-16 14 77 510 8-4 23 5 77 26 8-68 82 374 8'5 45 6 82 15 9-24 i 76 486 8-0 23 3 76 3 8-44 88 75 9-0 46 i 88 31 9-16 25 78 462 : 8-3 24 56 78 '4 8-85 81 407 7-6 46 36 80 57 8 - 2o 3 87 122 8-8 25 8 87 5 8-39 I 89 83 365 8-6 47 48 82 58 9-19 2 79 422 6-0 26 6 79 I0 6-45 2 84 289 6-5 48 16 83 58 6-25 2 86 191 9-0 26 13 86 18 9-29 14 84 290 5-5 48 23 83 57 571 2 84 311 7-5 26 43 83 49 7-68 4 1231 1291 75 4 8 9 8-5 12 50 40 + 75 12 8-39 3 88 77 : 8-5 13 26 45 + 88 4 8-56 91 77 49 1 77 6f n 5 53 77 29 8-30 2 79 424 9'3 27 2 79 3 9-29 I 470 6-8 5 1 7 75 57 7-65 2 75 57 7'5 27 43 75 24 8'53 2 89 22 87 5' 33 88 54 9-97 I 82 395 8-5 28 25 81 47 8-58 2 79 47 7-0 5 2 45 79 3 8-59 2 76 491 67 3' H 76 35 7-86 i i 85 209 8-5 53 4 85 "4 9-38 3 82 397 8-6 32 5 82 30 8-69 2 83 369 7-5 53 9 83 4 /95 2 86 193 7-5 32 25 85 47 7-96 17 82 378 8-5 53 22 82 42 8'93 I 77 5 1 5 7'5 32 36 76 4 8 8-82 I 77 495 8-5 54 6 77 45 8-67 2 76 492 7-0 32 36 76 19 773 i 85 211 8-7 54 5 6 85 40 9'57 4 77 516 6-0 33 23 77 3 7-82 i i 1195. As one mass. Components 8 m- 2, io m '3. PHOTOGRAPHIC MAGNITUDES. 26 PHOTOGRAPHIC MAGNITUDES OF STARS. Dec. + 75 to + 90. B.D. R.A. Dec. Photog. N o { - B.D. E.A. Dec. Photog. Tlf- No. of No. Mag. 1900 .900-0. Mag. pl tes No. Mag. 1900*0. 1900*0. Mag. Plates. 13O1 1361 _ h m s O / O h m s o / 87 124 9' '3 34 47 + 87 I 9-42 13 81 477 8-6 14 26 35 +81 2 8-99 2 76 493 7'8 ! 35 7 76 25 8-52 i 76 527 5'0 27 44 76 8 5-88 2 80 417 7'5 36 39 79 52 877 2 8 1 479 9-0 27 48 81 30 9'35 2 78 464 8-0 37 13 78 24 8-05 I 79 447 6-8 28 18 78 57 7'49 2 8 1 440 87 37 47 80 59 8-85 2 76 528 8'3 29 18 76 13 8-79 2 77 519 6*2 39 42 77 21 6-52 I 86 211 8-5 30 2 86 3 9-02 16 87 125 9-0 39 5' 86 50 973 3 82 423 9-0 30 59 82 24 8-86 i 75 5i6 8-0 40 22 75 7 8-51 3 77 54 8 8-2 3i 52 77 8-30 2 8 1 443 8-5 41 23 81 34 8-88 2 75 539 7-8 32 13 75 43 9-13 2 82 402 9-0 41 52 82 12 9'39 2 84 326 8-6 32 38 i 84 10 9-19 2 1311 1371 78 466 5-8 13 42 13 +78 34 6-89 2 8 1 482 6-7 H 32 57 + 81 15 7-29 2 80 421 7-1 42 1 6 80 42 8-35 2 83 417 87 33 2 83 o 9-25 I 8> 233 8-5 42 33 85 46 8-96 9 81 483 87 34 16 81 o 8-72 2 83 397 6-5 45 10 83 15 676 2 82 427 8-8 35 1 81 53 9-45 I 76 500 7'5 46 20 76 5 8-16 I 75 54i 8-0 35 u 75 8-82 2 77 522 8-9 46 47 77 39 9-17 I 84 328 8-6 36 19 83 55 9-25 2 87 127 9-0 46 55 87 4 978 3 84 327 8-5 36 21 83 54 9-26 2 76 501 9-2 48 17 76 2 9-23 i 80 448 6-3 36 2 3 80 6 7'59 2 76 502 7-0 48 27 76 4 7-68 i 85 242 8-0 38 4 85 43 9'49 3 80 422 7'4 49 55 80 25 8-02 2 81 485 87 38 21 81 8 9-08 2 1321 1381 79 43 i 6-6 13 50 22 + 79 2 9 7-65 2 86 212 9-0 H 4 37 + 86 13 9-63 2 87 129 8'5 51 15 86 59 974 I 80 451 7-0 4 1 57 80 13 871 2 83 234 7-0 51 2 9 85 i 8-69 7 83 423 8-5 42 57 82 54 8-77 I 89 25 9-0 51 32 89 29 9 -6 3 6 87 141 9'3 43 45 87 44 9-91 2 81 452 6-8 5 2 27 8 1 16 7-56 2 85 247 8-5 47 10 85 17 9*16 3 84 317 8-8 52 36 84 37 9-40 3 86 215 8-6 47 32 86 35 I 9'43 7 88 80 8-6 53 38 87 48 8-86 9 76 536 7'5 48 8 76 27 7-52 i 76 504 8-3 54 4 76 45 9-14 2 86 217 6-8 49 38 86 22 77i 57 77 523 7'3 54 3 76 59 9-17 2 78 497 8-4 53 4 77 53 8-85 i 86 199 8-5 54 39 86 i 9-05 27 78 498 8-0 53 36 77 49 8-70 i 1331 1391 87 130 87 13 54 49 + 87 6 9-80 I 8 1 495 6-8 H 54 5 8 + 81 9 6-95 3 79 434 77 55 1 79 28 874 2 78 501 6-5 55 25 78 35 7-40 i 79 433 77 55 i5 78 53 7-58 2 78 501 6-5 55 25 78 35 7-40 i 79 435 8-1 56 15 79 ii 8-13 2 75 545 7-2 55 4i 75 i7 8-43 2 85 235 8-8 56 21 85 41 9'53 3 85 248 8-6 55 5i 85 42 8-83 15 82 407 8-2 59 7 82 6 8-26 i 83 431 6-0 57 3 82 55 6-21 2 86 201 7'5 J 3 59 24 86 14 7'35 39 76 544 8-8 57 5 76 42 8-90 I 75 526 8-4 14 4 8 75 3 8-33 2 80 459 8-2 57 3i 79 5 6 8-31 2 77 528 9-0 4 15 77 9 8-85 2 75 547 7-0 14 57 32 75 18 7-70 2 75 527 7'5 4 4 75 12 8-32 3 77 5 6 5 77 15 o 20 76 55 8-23 I 1341 14O1 77 529 7-8 14 5 21 + 77 27 779 2 84 335 7'5 15 i 41 + 84 20 8-07 3 75 529 67 6 9 75 4 3 88 90 8-9 4 5 88 24 9-50 12 87 133 8-8 7 16 86 58 976 2 76 548 8-0 6 9 76 45 9-09 I 78 478 5-0 9 '4 78 i 6-19 2 86 221 8-1 6 19 85 54 7-88 34 8 1 464 8-8 9 59 81 38 9-02 2 77 57 > 7-8 6 19 77 45 775 I 88 85 9-1 10 35 88 20 10-05 I 77 572 8'3 6 45 77 i 8-80 i 76 515 87 H 39 76 5 9-09 2 84 339 8-4 7 13 8 4 25 9 33 2 76 518 9-2 15 57 75 54 9-08 2 79 45 s 8-6 7 15 79 34 9-02 2 8 1 469 9-2 16 38 81 37 9'39 2 84 342 8-9 8 21 84 20 9'59 2 80 432 8-3 17 37 80 28 8-67 2 76 551 8-0 8 24 /6 22 8*20 I 1351 1411 88 86 8-5 14 18 6 + 87 52 8-58 92 75 554 9-0 15 8 27 + 74 58 9'35 2 79 443 7-8 18 8 79 48 9-28 2 86 222 8-8 Q o 86 17 9-23 19 76 520 7-8 '8 32 76 8 8-50 2 85 249 8'0 9 9 8 5 31 8'08 ! 19 75 53i 8-5 !9 54 75 20 9-02 3 7 H3 7-0 9 21 87 37 8-05 ! 91 77 54 8-5 20 13 77 9 9-14 2 82 443 8-8 10 57 82 44 9-29 j i 75 532 7'5 21 II 75 3i 8-48 3 83 440 8-5 n 43 83 12 8*86 : 2 85 239 8-5 22 I 85 i 9'02 7 83 441 8-8 12 18 83 48 9-46 2 77 54i 8'9 23 26 77 7 9'33 2 88 91 8-4 '5 32 88 9 9-88 i 87 138 9'3 24 40 87 46 10-04 I 78 507 8-3 15 33 78 46 8-66 2 85 240 9-0 26 22 85 46 971 I 8 1 504 8-9 16 55 81 4 8-96 2 ROYAL OBSERVATORY, GREENWICH. Dec. +75 to +90. B.D. R.A. Dec. Photog. ^ . \Xnrr B.D. R.A. Dec. Photog. M7 7-65 2 80 607 7-2 14 22 80 34 8-05 2 75 7'i 8-5 50 8 75 37 9-09 2 87 1 80 8-0 14 31 87 10 8-25 84 79 6 4 8 7-0 51 42 79 12 8-22 2 80 608 87 '4 35 80 48 9'3 2 76 758 9-0 52 28 77 o : 8-99 2 80 609 7'' '5 3i 80 35 7'49 2 80 633 9-1 S 2 49 81 3 9-49 I 76 721 9-1 '5 37 77 i 9-14 I 75 7H 8-5 53 25 75 8 9'O2 2 87 181 8-0 '5 45 87 4' 8-35 9 1 8 4 445 8-5 53 47 84 3i 7-93 7 76 722 8-3 16 1 1 76 42 8-10 i 87 185 8-9 53 5 87 53 9-27 24 76 725 7-8 18 6 76 8 9-05 i 88 115 8-8 54 4 88 34 8-90 9' 79 6z 3 8-8 19 22 79 43 9-18 2 76 761 9-0 55 22 77 2 9-08 2 18O1 1861 81 655 8-3 19 2O 23 + 81 6 8-45 2 78 694 7'5 '9 55 35 + 7 8 22 9-1 1 2 86 290 8-8 20 28 86 35 9-12 '9 81 687 77 56 i Si 19 7-94 2 76 726 9-1 20 4 2 76 3' 9-26 i 79 649 9-0 56 14 79 20 8-69 2 84 436 9-2 21 21 84 26 ' 9'5 3 79 6 5 8-8 56 44 79 26 9-08 2 76 73 1 7-6 21 2 3 76 26 7-67 i 86 303 8-7 5 6 45 86 23 9'32 4 88 112 6-5 22 29 88 59 7-69 92 84 446 8-5 56 51 84 28 870 7 79 625 9-0 22 32 79 '9 9-05 i 87 186 9-0 56 52 87 42 9-51 5 76 732 7'3 22 36 76 36 8-21 i . 75 7i7 8-5 57 47 75 '9 8-91 2 76 733 8'0 22 46 76 17 8-22 I 82 598 7-6 58 55 82 1 1 8-41 2 81 659 7'9 24 6 81 28 8'06 2 88 117 var. 59 2 88 50 876 9 1 1811 1871 78 676 8-1 19 24 7 +78 56 8-79 I 75 718 7-2 19 59 23 + 75 26 8-48 2 8 1 660 8'o 24 14 81 45 8-03 2 79 6 52 8-3 20 113 79 " 8-82 2 80 614 8-1 24 35 80 17 8-53 2 79 6 53 9' I 26 79 4i 8'94 2 7 6 734 6-5 25 7 76 22 8-80 I 76 769 8-5 I 31 76 44 874 2 77 728 7-8 25 26 77 58 775 I 76 771 6 - o 2 25 76 12 7'47 2 81 665 8-8 27 17 81 56 9-09 2 79 6 55 : 8-3 2 2 7 79 '3 8'95 2 80 618 8-8 27 26 80 38 8-62 2 85 337 8-5 3 2 85 36 8-61 23 77 730 8'3 2 7 44 77 4 2 9-06 I 8 1 691 8-9 4 '4 Si 52 9-21 2 79 628 6'3 27 45 79 24 6-19 2 79 657 7-8 5 i 79 l6 8-65 2 83 552 6-0 27 57 83 16 6-61 2 84 448 8-8 5 27 84 26 875 5 1821 1881 81 666 7'5 19 28 46 + 81 36 9-17 2 83 569 9-0 20 6 25 + 83 59 9-23 4 81 668 8-3 3 27 81 32 8-91 2 75 72i 8-8 6 30 75 '3 8-92 2 79 629 8-0 30 27 79 34 8-21 2 85 339 87 7 18 85 46 9'45 2 76 742 87 32 47 76 31 8-91 I 79 660 6-5 7 38 79 2 4 7-28 2 79 6 3 2 9-0 33 20 79 57 8-92 2 80 644 8'3 8 23 80 24 8-93 2 8 5 3 2 9 8-4 33 54 85 53 876 3 76 778 9-1 9 20 76 21 9-17 2 83 556 87 34 3 84 5 8-58 4 82 608 8-5 9 58 83 8 8-22 3 77 734 7-0 34 9 78 3 8-01 i 77 762 77 ii 27 77 32 7-I9 2 K333 9-0 34 1 78 3 8-14 i 75 726 8-0 12 8 75 57 8 7 2 2 75 701 8'9 34 24 75 28 8-64 3 77 764 -4'8 12 l6 77 25 4-41 2 1831 1891 78 683 9-0 '9 34 52 + 78 12 9-20 i 82 609 8-5 20 13 8 + 82 32 8-43 3 74 829 8'5 35 29 75 7 7-52 i 8 5 34 7'5 13 37 85 28 9'O2 13 85 33 8'9 35 43 85 S3 9 -I 3 26 84 451 7-0 14 o 84 23 671 6 75 702 8'5 35 45 75 2 3 9-20 3 8 1 698 8-6 15 3 1 81 9 8-92 2 ?6 745 87 36 47 76 15 8-92 i 8 1 699 7'5 i5 33 81 55 7-54 3 77 736 7-8 37 54 77 50 9-03 i 84 455 9-0 15 37 85 3 9-08 6 79 638 7'5 40 o 79 5 6 8-58 2 80 648 7-8 17 58 80 9 771 2 86 297 9-0 4 55 86 44 9-23 '9 79 668 7-0 18 ii 79 20 8-18 2 76 750 f 8'4 42 1 1 76 ii 8-69 i 83 57* 8-5 18 27 83 53 9'"3 2 76 751 8-5 42 28 76 19 8-15 i 76 792 8-6 18 51 77 6 8-98 2 1814. UX Draconis, 1912 Apr. i d '54Z. 1870. E Cephei. No evidence of variability in the observations. 1872. Components not separable ; mags. 9 % io m 'z. ROYAL OBSERVATORY, GREENWICH. Dec. + 75 to + 90. 31 B.D. R.A. Dec. Photog \ r j. f No. of B.D R.A. Dec. Photog. \\ , , ' No. I of No. Mag. 1900*0. 1900-0. Jftag. Flaws. No. Mag. I ^OO 'O. I^OO'O. Mag. ; Plates. 1901 1961 h m s O h m s O 1 77 77 7'8 20 19 9 + 77 43 8-12 2 85 357 8-8 20 59 o + 85 II 9-26 3 80 650 6-8 20 9 80 13 6-55 2 81 725 8-0 21 o 39 8l 25 8-22 2 75 735 8-5 2O 17 75 27 8-83 3 76 824 8-2 i 37 77 4 7-69 I 8c 651 87 20 26 80 1 6 7-92 2 78 736 8-2 2 28 78 54 8-40 2 79 6 7 8-9 20 37 79 43 9-24 2 79 694 9-0 3 4i 80 6 9'35 I 9-0 22 12 75 47 9-04 2 78 737 9-0 3 59 78 55 9-46 2 84 461 8-5 22 49 84 47 8'49 10 74 9 02 8-0 4 o 75 8 8-36 2 80 652 8-4 22 57 80 50 8-50 3 75 77 8-0 4 4 75 3 8-06 2 84 46 z 7-0 24 28 84 14 7 29 4 78 738 8-5 4 22 78 54 9'II 2 84 463 7' z 24 31 84 49 7'33 10 78 739 9-0 4 28 79 9 9-I9 2 1911 1971 75 739 7'3 20 24 50 + 75 43 9-09 2 87 192 9'3 21 4 43 + 87 52 10-00 2 82 61 1 9' 1 24 5 1 82 44 8-91 2 82 636 8-5 5 28 82 35 8-00 2 8; 187 8-0 25 8 87 38 8-93 9 1 87 193 9-2 6 27 87 54 9'33 13 76 799 9-0 26 50 76 19 874 2 8 5 359 8-1 6 30 85 29 8-24 24 85 347 8-0 27 10 85 57 8-99 '9 77 800 6-1 7 3 77 43 573 2 76 802 8-5 27 48 76 ii 874 2 75 774 8-2 7 55 75 59 8-07 2 78 7'4 8'2 28 41 78 46 8-65 2 80 679 7-0 8 7 80 45 7-03 1 8 1 706 7 '4 28 44 82 2 7-07 3 77 801 9-1 9 3 78 o 8-80 2 85 348 9'3 28 57 8 5 3 6 9-50 3 80 682 7-0 i 4 80 37 8-41 I 79 6 73 9-0 29 1 6 79 53 9-27 2 81 728 8-8 ' 5 81 53 8-83 2 1921 1981 82 613 8-5 20 29 25 + 82 31 7-98 3 80 683 8-9 211 II + 80 59 9 14 I 75 "4 2 8-5 29 42 75 49 9-0 1 2 81 729 8-7 1 '5 81 56 8-57 2 79 6 75 7'3 30 34 79 53 7-14 2 78 74* 7'5 I 22 78 15 7-22 2 88 118 9-0 32 39 88 15 9-61 5 75 778 6-8 '2 57 75 54 6-80 2 83 586 9'3 '33 i 83 14 9-17 2 78 744 6-8 !3 49 78 34 6-87 2 80 657 7"5 33 9 81 6 7-28 4 79 699 8-5 15 20 79 56 8-41 2 82 617 TO 34 23 82 51 7-44 3 76 831 8-9 15 23 76 ii 9-01 2 80 659 5-8 34 32 81 5 6-25 4 76 832 8-8 15 48 76 13 8-80 2 80 660 6-1 35 15 80 44 6-68 2 86 318 8-0 l6 22 87 8 8-48 8 9 80 662 9-0 36 1 1 80 47 8-87 3 75 78i 8-4 16 29 76 7 7-85 2 1931 1991 Si 710 8'5 20 38 38 + 81 35 8-85 3 80 688 6-5 21 l6 46 + 80 23 7-05 2 75 752 7-2 3 8 4 2 75 H 8-n 2 76 833 6-0 16 48 76 35 7-07 2 83 588 6-2 39 5 83 17 6-38 3 80 689 8-4 6 53 81 o 9-15 I -8 716 6-9 39 57 79 5 6-42 2 80 690 6-3 17 31 80 49 6'2O I 80 664 9-1 40 10 80 33 8-93 3 77 811 7-0 '7 34 78 ii 7-19 2 76 809 7-1 40 10 -6 28 7-10 2 77 810 9-2 '7 39 77 H 8-96 2 75 753 7-8 4 33 75 3' 9-15 2 75 782 8'9 18 49 75 4 9-06 2 78 718 8-5 41 o 78 56 8-31 2 86 319 7-0 '9 35 86 37 7-21 78 81 712 7'5 41 36 81 39 8-09 4 78 749 9-0 21 18 78 18 8-87 2 80 66- 9'i 45 16 80 27 9-10 2 79 / OI 7-8 21 32 79 55 7-48 2 1941 2001 74 884 8-8 20 45 40 + 75 3 9-22 I 83 603 7'5 21 21 33 + 83 5 7-83 2 75 755 8-7 45 59 75 13 9-02 2 81 735 7-8 21 43 Si 20 871 2 85 35* 9'3 47 58 85 4 o 9-58 2 87 195 9'3 22 IO 87 29 9-45 5 82 627 8-6 48 6 82 41 8-24 3 81 736 7 - 9 22 46 81 36 8-30 3 75 75 6 87 48 6 75 37 9-21 2 81 737 7'5 23 o 82 5 8-00 3 78 727 7-8 48 32 78 52 7-96 2 76 836 6-5 23 17 76 40 6-44 2 81 718 6-0 49 5i 82 10 5-72 3 85 361 9-0 23 21 85 15 9-16 8 85 354 8-0 So 5 85 18 9-03 12 75 787 6-7 23 26 76 7 7-08 2 80 670 8-8 5 33 80 42 9-21 2 75 788 6-8 24 46 75 32 7'97 2 75 76o 8'3 5 44 75 23 9-10 2 81 739 9-2 25 38 81 37 8-97 2 1951 2O11 85 355 9-i 20 52 5 + 85 28 9^5 7 80 695 8-9 21 26 2 + 80 29 8-46 ' 1 80 672 5'3 52 8 80 ii 6-27 2 83 608 9-0 26 59 84 12 8-84 5 84 474 8-4 53 24 84 15 8-23 4 78 752 8-8 2; 27 7 8 24 8-90 2 83 594 8-8 53 54 83 21 9-10 2 79 707 6-0 27 47 80 5 6-66 2 7' 793 8-0 54 3i 77 49 7-98 2 82 648 8-0 27 53 82 33 8-04 2 75 764 6-0 55 55 75 32 673 2 75 79 1 7'3 28 54 75 58 7-55 2 77 795 8-0 56 35 77 52 9-10 I 83 609 9-3 29 9 83 47 9'35 I 78 73i 8-6 5 6 37 79 5 8-85 I 77 823 7-2 2 9 55 77 3 8-16 2 75 765 6-6 57 H 75 20 7'53 2 82 650 8-6 30 4 82 51 8-76 2 83 59 6 77 58 58 83 33 7 - 37 3 79 7o 9-0 30 16 79 52 9'33 2 . 32 PHOTOGRAPHIC MAGNITUDES OF STARS. Dec. +75 to + 90 C B.D. R.A. Due. Photoa. N ?' ' nf ot B ' D - R.A. Dec. Photog. IVtnrr No. of No. Mag. igoo'o. 19000. Mag. p] ates No. Mag. 1900 o. 1900*0. "* i Plates. 2O21 2081 . o h in s o / O h m s o / 75 79 2 8-0 21 30 28 +75 52 8'60 2 78 78* 8-4 zz ii 39 +79 9 8 73 Z 8 1 742 8-0 30 51 81 18 8-48 z 88 131 87 12 6 88 58 870 9 1 82 651 8-5 30 58 83 8 8-52 j 2 83 626 9-0 12 iz 83 35 9 -2I 3 81 744 9-2 33 34 81 45 8-92 2 82 682 8'5 12 47 83 5 877 i 78 758 8-8 34 '3 , 78 28 8'80 2 8 4 505 8-0 13 42 84 55 8'43 7 83 613 8-6 35 24 . 83 24 8-45 Z 83 627 9-2 14 6 83 18 8-94 3 80 700 8-2 37 23 80 43 8-72 I 79 732 15 58 79 25 9-11 2 79 713 9'3 38 4 6 : 79 25 9-21 2 75 820 6-8 17 8 75 59 6-44 Z 83 614 8-4 39 3 2 83 30 8-u z 75 821 8-9 17 30 75 51 9-02 2 75 797 8-8 4> " 75 53 8'92 2 79 733 8-5 17 42 79 16 8-85 2 2O31 , 2091 82 657 8-5 21 41 51 + 82 28 8-61 2 75 822 7-3 22 17 44 +75 31 7-32 2 81 752 9-2 42 48 81 33 9-10 2 79 735 8-9 18 25 So 6 9-52 2 77 832 87 43 39 77 46 8-73 2 75 823 ; 7-8 18 27 75 37 7-51 2 87 196 9-2 45 33 87 19 9-92 I 79 734 8-3 18 30 79 2 4 8-36 2 83 616 8-8 45 44 83 5i 8-04 2 78 785 8-0 '8 33 79 - 1 9'io 2 75 8o1 8-5 46 22 76 o 9'35 Z 76 857 8-2 '9 '3 77 4 8-04 I 86 324 8-2 46 26 86 33 8-18 6 7 75 825 87 20 33 75 3 8 875 2 ' 77 834 7-0 4 6 33 77 4 6 6-86 2 83 630 7-0 20 54 84 o 7-22 5 78 761 8-9 46 44 78 36 9'34 2 85 383 5-0 21 19 85 36 5-26 29 78 762 7-8 47 7 78 33 965 2 85 384 . 6-5 21 4 I 85 43 7-46 28 2O41 21O1 78 764 9-2 21 47 10 + 79 9 871 2. 86 332 9-0 22 22 I + 87 5 i 9-11 35 83 617 8-9 47 19 83 52 895 2 78 79 1 8-6 22 8 78 22 8-05 i of. ,, 7 - 47 38 86 25 973 I 82 689 8-3 2215 83 2 878 4 60 325 I 47 43 86 25 10-12 I 77 860 6-8 22 51 77 44 6 '39 i 86 326 8'3 47 5' 65 25 9-83 I 81 775 7-0 23 43 81 26 ?'oi 2 80 706 8-2 48 17 80 15 8-27 2 76 859 7'3 23 59 76 55 7-32 I 82 663 8-5 48 56 82 37 9'37 2 75 828 8-9 24 10 75 40 8-88 2 87 199 8-8 49 l8 87 58 9-46 8 87 205 7'5 24 '4 87 34 7-25 9) 79 717 8-0 50 7 80 12 8'47 2 78 796 6-0 25 58 78 17 5-95 I 83 618 7-2 50 24 83 34 7-28 2 79 739 7'5 26 9 80 ii : 7-51 2 2051 2111 76 847 8-5 21 50 46 + 76 14 8-96 2 77 862 8-8 22 26 27 + 77 5 1 876 I 85 367 8-5 5 53 85 59 8-62 34 77 863 8-0 26 44 78 3 8-24 I 77 836 7'5 5 57 77 ' 8 9-15 2 75 832 77 27 8 75 43 8-93 2 77 837 8-5 52 44 77 5 2 8-64 2 84 509 7-2 27 3 84 33 : 7-80 5 78 768 6-<; 53 19 79 5 7'87 2 78 801 57 29 o 78 19 5-51 i 77 838 8-6 53 24 78 3 8-37 2 81 781 8-5 29 7 81 39 8-52 2 79 720 8-2 53 27 79 2 9 7'99 2 76 863 87 29 '7 76 29 i 8-40 I 82 667 87 54 37 82 59 9-08 i 75 836 57 30 31 75 43 5' 6 9 3 85 370 9-0 55 1 6 85 3' 9'4 4 88 133 9'2 3 53 88 44 9-48 6 83 620 9-0 55 26 83 34 9'12 2 76 864 9-0 32 9 76 51 i 9-07 2 2O61 2121 85 371 8-5 21 55 48 + 85 26 9-16 7 77 866 8-5 22 34 24 + 77 43 7'97 2 78 771 f-4 55 52 78 23 873 2 75 840 9' 1 34 34 76 14 9-01 3 79 72i 6-4 55 55 79 5 7-78 2 75 841 9 '4 35 6 75 22 9-19 3 88 130 8-6 56 57 88 23 9-22 22 75 8 42 87 35 36 76 13 9-02 3 75 808 7'5 57 20 75 3 6 8-56 ! 2 87 206 9-2 35 56 87 17 9-41 16 /8 775 8-5 59 8 78 30 872 2 77 867 8-8 3 6 5 1 78 o 8-60 i 87 201 8-2 59 H 87 19 8-40 8 9 81 786 8-8 37 12 81 32 9-12 2 84 500 9-0 59 32 84 21 | '/2S 2 74 9 8 8-2 ; 37 14 75 8 7-64 I 77 841 87 21 59 33 77 4 8-88 .2 85 389 9-2 37 50 86 i 9-36 I 76 849 8-0 22 O 38 76 50 7-97 2 77 868 8'i 39 8 77 3 7-65 2 2O71 2131 82 672 8-2 22 1 30 + 8 3 i . 772 2 80 731 67 j 22 39 12 + 80 52 7-26 3 82 673 7'5 i 49 82 23 7-50 2 75 847 9-0 ' 39 14 76 9 9-17 2 82 674 8-0 1 56 82 23 8-16 2 79 749 39 4 6 79 4 1 8-47 2 85 376 8-5 2 3 85 23 870 12 76 870 7'5 39 4 8 77 5 7-09 2 83 622 9-0 3 48 83 S 2 877 5 79 74 s 9'3 39 4 8 79 36 9'45 2 75 814 8-0 7 9 75 59 8 '64 2 78 806 8-9 40 o 78 19 9-01 I 81 767 77 8 58 82 10 771 2 75 8 49 9-0 40 1 6 75 3 6 8-93 2 78 780 8-8 9 29 78 22 8-83 2 75 850 9-1 4 55 76 5 9-19 2 74 955 8-8 9 56 75 9 8-82 I 76 872 9-0 41 24 77 4 9'io 2 75 818 7-0 ii 29 75 58 8-04 ' 2 82 698 9'4 4 1 43 82 15 9-3i 2 ROYAL OBSERVATORY, GREENWICH. Dec. +75 to +90. 33 B.D. R.A. Dec. Photog. \t a - No. of B.D. R.A. Dec. Photog. Vacr No. of No. Mag. 1900*0. 1 900 'o. ilag. Plates. No. Mag. 1QOO O. 1 900*0. jiag. Plates. 2141 22O1 h m s o / O h m s / 77 7' 7-2 22 42 15 + 78 o 7-02 2 80 752 9 -0 23 8 48 + 80 28 8-54 2 86 335 8-0 42 19 86 46 7-87 83 Si 812 8-3 9 3 81 16 8-24 2 76 874 8-5 42 53 76 41 8-12 2 80 754 9-0 9 7 80 49 874 2 81 788 77 4 2 55 "81 22 8-49 2 78 823 8-5 9 21 79 5 8-39 2 79 75 7-0 43 ii 79 55 7-56 2 78 824 8-8 9 3 6 78 29 8-97 2 81 789 8-0 43 ii 81 58 8-60 3 77 894 8'3 9 48 77 3i 870 2 85 39 87 43 '8 86 8 9'02 29 81 814 8-0 10 23 81 51 779 2 76 876 87 43 45 76 49 8-44 2 80 755 8-5 10 32 81 14 8-53 2 82 700 8-0 43 54 82 45 7-24 3 79 772 87 io 53 79 20 8-32 2 78 808 9-0 43 59 78 22 9-30 i 89 38 9-0 10 57 89 16 9-50 H 2151 2211 8 1 790 9-0 22 44 10 + 81 24 9-19 2 77 895 8-4 23 ii 16 + 77 24 8-59 2 74 985 9-0 46 12 75 6 9-15 I 76 904 7-8 12 23 76 14 7-96 2 74 9 86 9-0 46 2 9 75 2 8-60 I 78 825 7'5 12 46 78 41 7-66 2 82 703 5-0 47 53 82 37 5-98 3 77 896 7-3 13 9 77 3 6 7-36 2 76 879 8'5 48 ii 76 32 8-82 2 83 647 8-0 13 II 83 42 7-42 4 76 880 8-0 48 18 76 42 8-02 2 76 905 9-0 13 24 76 30 8-99 2 79 756 7-2 48 26 79 5 7-59 2 82 712 9-0 13 28 82 54 9'3 I 82 704 8-0 48 3* 83 10 8-12 3 75 876 9-0 13 32 75 59 8-86 2 8, 795 8-9 48 32 81 25 8-39 3 79 776 8-5 14 20 79 35 9*02 2 85 392 9-2 48 57 86 5 9-37 6 83 648 9-2 H 55 83 59 9-42 I 2161 2221 M 5'3 7'3 22 50 6 + 84 15 7-72 5 80 758 8-9 23 15 4 + 80 53 8-97 2 - - ttf-fl 7} 8 3 8 77 51 41 75 4 8 7-28 2 79 777 7'8 15 10 79 20 6-93 2 7 8 8l 3 77 5' 43 78 22 8-26 2 81 815 8-8 15 35 Si 38 9 '49 2 7 8 8l 4 8-5 51 50 78 32 8-03 2 Si 816 8-1 15 35 81 46 8-32 2 77 77 8-0 52 18 77 19 8-69 2 78 826 77 16 15 78 27 8-u 2 79 758 7-8 52 26 79 42 8-60 2 76 908 8-5 16 37 76 22 8-88 2 76 885 8-3 52 31 76 58 8-38 2 76 910 8-5 17 2 7 6 31 9 14 2 80 737 8-9 53 10 81 8 8-79 2 76 911 8-0 17 19 76 31 7-69 2 75 862 8-0 53 23 75 H 873 2 Si 818 8-5 18 i 81 18 8-38 2 84 516 8-0 53 29 84 3i 8-44 5 74 1018 8-0 18 14 75 H 8-44 2 2171 2231 84 517 6-5 22 53 29 + 84 50 6-99 7 85 398 8-5 23 19 9 + 85 3' 9-28 4 81 801 8 739 8-0 7-9 53 3i 53 5i 81 24 80 45 8-24 8-03 3 5 76 914 S 7 { 20 17 20 18 76 31 76 31 9-12 9*16 2 2 88 134 9-1 54 H 88 50 9-67 i 76 915 7-9 20 26 76 58 7-88 2 75 863 9-2 54 27 75 22 9-19 2 80 764 9-1 22 59 80 23 9-10 I 77 879 7'3 54 36 77 58 7-98 2 76 917 9-2 23 4 76 19 9-07 2 83 640 5-0 55 '3 83 49 6-05 5 79 78i 8-8 23 8 79 37 8-92 2 8 1 802 9-1 55 z> 81 35 9-09 2 80 766 8-7 23 29 81 8 9''5 2 76 890 87 55 58 77 3 8-92 2 78 834 8-0 23 5i 78 59 8-23 2 80 743 9-0 56 31 80 45 8'99 2 78 835 7'5 23 58 79 -5 7-50 2 2181 2241 78 818 9-3 22 56 42 + 79 '2 9'37 2 82 720 9-2 23 24 ii + 83 13 9-09 2 82 707 8-5 5 6 43 82 31 9-i3 2 85 399 7'5 24 23 85 52 6-64 27 75 865 9-1 5 6 54 75 47 9-25 2 75 880 8-8 25 16 76 5 8-62 2 79 759 7'5 57 24 79 48 7-96 2 74 1023 9'5 25 16 75 i 9-20 2 75 867 7'5 58 n 75 35 7 '94 2 85 400 S-o 26 17 85 27 8-07 21 76 892 7'3 58 25 76 20 7-62 2 79 782 9-0 26 20 79 ZI 9-04 2 76 893 8-2 59 18 76 24 7'95 2 77 908 7-0 26 50 77 21 6-99 2 79 761 7"* 59 3 2 80 15 6-68 2 83 657 9'3 26 56 84 o 9-05 2 75 869 8-7 z2 59 42 75 58 9-05 2 76 924 8-5 27 10 77 o 8-63 2 79 763 9-2 23 37 79 45 8-90 2 80 770 8-2 27 18 80 27 8-03 2 2191 2251 76 764 9-2 23 i 23 + 80 12 9-15 2 85 401 8-0 23 27 30 + 86 o 7'32 3 2 8 1 806 8-5 i 36 81 19 9-18 2 75 881 9-2 27 36 75 26 9-04 2 74 1002 7'3 3 ' ' 75 2 6-53 2 86 344 6-0 2 7 49 86 45 575 80 77 891 8-5 4 22 77 22 8-90 2 77 99 6-8 27 51 77 i 6 6-82 2 79 7 68 77 5 '5 80 6 7-56 2 75 882 9-0 29 26 76 4 8-92 2 79 769 rs 5 29 80 2 7-10 2 79 784 9-3 30 19 79 28 9*20 2 84 5 2 3 8-4 7 18 85 ii 8-59 '4 85 403 7-8 30 23 85 38 6-94 26 81 810 8-1 7 28 82 3 8-21 3 75 885 9-2 31 iS 76 6 9-12 I 76 900 8-9 7 3 76 38 877 2 78 841 9-0 31 31 79 7 9-10 2 75 7i 8'5 7 4 75 29 8-91 2 79 7 8 5 8-8 31 41 80 2 8-80 2 2176. As one mass. ( Components S m -5, 9 m -2. PHOTOGRAPHIC MAGNITUDES. 34 PHOTOGRAPHIC MAGNITUDES OF STARS." Dec. +75 to +90. B.D. E.A. Dec. Photog. \Tarr No. of B.D. R.A. Dec. Photog. \t oft No. of No. ' Mag. 1 900*0. I OOO 'O. Mag. Plates. No. Mag. 1900*0. 1900*0. Mag. Plates. 2261 2301 o h m s o / o h m s o / 79 786 8-2 23 32 12 + 79 54 9-46 2 76 934 6-9 23 47 9 + 77 3 6*72 2 80 776 8'3 32 2 9 80 57 8-61 2 81 838 8-0 47 23 81 17 8-51 2 83 660 9-0 33 7 83 36 8-78 4 76 935 8-7 47 53 77 8 8-47 I 82 728 7'5 33 H 82 39 8-27 i 79 796 8-3 48 7 79 '7 7-98 2 79 787 9-0 33 30 79 22 9-64 2 88 141 9'5 48 43 88 59 10-05 I 8 4 533 87 33 58 ' 84 37 8-20 5 75 896 87 48 52 75 22 8-42 2 80 778 8-5 34 5 80 47 9'34 2 75 897 8-4 48 55 7 6 2 8*12 2 76 926 9-0 34 76 16 9-03 2 85 406 8-8 50 52 85 21 8*44 18 76 927 8-8 34 Z 7 76 54 8-52 2 77 929 7-8 50 52 77 22 8'47 i 79 788 9-1 34 28 79 26 8'99 2 85 47 9'5 5o 54 86 13 9*60 i 2271 2311 74 I0 3 9-0 23 34 3 6 +-75 10 8-62 2 82 743 var. 23 5' 45 + 82 38 6-58 i 76 928 3'5 35 H 77 4 4-58 2 78 851 7-8 52 12 79 12 777 2 77 9'4 9-0 35 21 77 18 9-05 2 75 9' 7-8 S 2 27 75 45 7*58 2 74 I0 33 8-0 35 33 75 12 7*41 2 76 941 8'3 S 2 38 77 o 8*31 I 79 790 8'2 35 45 79 16 777 2 88 142 9 '4 S 2 4 88 53 9'93 I 75 889 8-3 35 59 75 20 9- 1 6 2 80 791 8-4 S 2 55 80 48 9-04 2 81 827 8'3 36 35 81 26 9-52 2 75 902 9-1 S 2 55 76 15 9*17 2 74 I0 34 8-0 36 53 75 2 8-05 2 76 942 8-6 53 4' 76 42 8-94 I 82 733 8-5 37 24 82 19 9*01 I 78 852 9 '4 53 59 78 26 9*23 I 80 780 7-8 38 49 80 45 7-50 2 76 944 9-0 54 44 7 6 45 8-84 I 2281 2321 75 891 8-3 23 39 8 + 75 28 8-03 2 85 409 8-0 23 54 4 6 + 86 9 6-59 37 84 536 8-2 39 2 5 84 55 8-28 II 76 947 9 '4 56 2 76 39 8-99 i 75 893 8-6 4 39 76 7 7-96 2 76 948 9-0 56 12 77 5 9-22 i 77 9 22 8-9 41 o 78 o 8'68 2 86 347 8-6 57 19 86 29 773 49 84 538 9-0 4' 5 84 46 9-22 3 82 748 7-0 57 35 82 2; 7'3 i 82 735 8-2 41 21 82 15 8-48 i 79 799 7'5 57 37 79 44 776 2 80 783 87 4' 23 80 38 9'49 2 75 9 6 8-5 58 4 75 45 8-24 2 86 346 9'3 4i 53 86 48 9'55 3 81 841 9-2 58 7 82 6 8-88 2 80 784 8-0 42 21 So 49 7-82 2 78 854 9-2 58 25 78 44 9'3 I 83 663 9-1 42 29 83 3 8-96 2 2291 76 93' 9-0 23 42 45 + 77 I' 9*10 2 87 217 8-5 42 52 87 47 8-71 91 79 793 8'3 43 4 80 i 8-13 2 8 4 539 8-1 44 2 84 3' 8-26 4 81 832 8-8 44 2 82 14 8-67 2 88 139 9-0 44 '3 88 17 9'37 H 82 736 8-5 44 38 82 26 8-41 i 74 1042 8-5 44 48 75 12 9-24 2 82 740 9*0 4 6 35 82 21 9-23 I 77 926 8-9 46 43 77 3 9' Z 3 I 2311. V Cephei, 1912 Jan. Z7 d '^gz. UNIVERSITY OF CALIFORNIA LIBRARY BERKELEY Return to desk from which borrowed. ThisbookisDUE on the last date stampedl -z =, 4 / ~" LD 21-100m-U,'49(B7146sl6)476 701268 ?/xj(y UNIVERSITY OF CALIFORNIA LIBRARY * Y ASTRONOMICAL SOCIETY ROYAL PHOTOGEAPHIC MAGNITUDES OF STABS BRIGHTER THAN 9 m -0 BETWEEN DECLINATION +75 AND THE POLE.