'. A\^^r*n'f iliiiUiAMiiiK«2 CIHM Microfiche Series (Monographs) ICIVIH Collection de microfiches (monographies) Canadian Institute for Historical Microreproductions / Institut cana ■'ien de microreproductions historiques ^V^C Technical and Bibliographic Notes / Notes techniques et bibliographiques The Institute has attempted to obtain the best original copy available for filming. Features of this copy which may be bibliographically unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming are checked below. 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Tous les autres exemplaires originaux sont filmAs en commenpant par la premiAre page qui comporte une empreinte d'impression ou d'illustration et en terminant par la derniAre page nui comporte une telle empreinte. The last recorded frame on each microfiche shall contain the symbol — ^ (meaning "CON- TINUED"), or the symbol V (meaning "END"), whichever applies. Un des symboles suivants apparaitra sur la derni^re image de cheque microfiche, selon le cas: le symboie —^- signifie "A SUIVRE". le symbole V signifie "FIN". Maps, plates, charts, etc., may be filmed at different reduction ratios. Those too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. The following diagrams illustrate the method: Les cartes, planches, tableaux, etc.. peuvent etre filmAs i des taux de reduction diff^rents. Lorsque le document est trop grand pour etre reproduit en un seul cliche, il est film^ A partir de Tangle supArieur gauche, de gauche ^ droite. et de haut en bas, en prenant le nombre d'images n^cessaire. Les diagrammes suivants illustrent la mAthode. 1 2 3 1 2 3 4 5 6 tr^.^^L-'-Zst' . w -^ ■- i Ss?-:^jC^xfe^faM^v?aiiv5iM-a^i^^^ MICROCOPY RESOIUTION TEST CHART ANSI nrd ISO TES' CHART No 2 1.0 I.I 1.25 ^ .7,: mil 2.0 1.4 1.6 ^ ^PPLIEDJUjGb Jnc: ~"-— ■ N«" "Ofh '*6Q9 USA FrHLICATIOXS *>v Till; dominion ^sitropljpgical (Dliserbatorp \ ICIORIA \'..l. 1, Nn. IS ' IINIV'? 7^\ ' " 'f^* UcB ci'^JH^^j UF^ OVAMV OF lili; Sl'l.( 'II!(»S(()|'|C HI\\i!N II. K. lilO't nv i(h;\Mii,i) K. voiNi; II. K. tUC.'.i K. A. 111(10. Iti' :{(! ()'". 5 ~ i 17 i:.'. u:i> aiiiiuuiicMl m- a hinaiy in I'.M'.t li\' tiir writer Iriini I >iiij;!c-|)i'i>iii plaii'-. TiirM' ~prctia >lius\c(l a caiitiL' ot' about (1(1 kiici(iit't('i> ami llic line-- liMiki-d laiii> -liarp. Tliirt v-cit;lit ailditioiial ohsciAatidiis ha\i' liccii M'cuicil with a \u-\\ Im ilclfiiniiiinjr the oiiiiial cicniriit-. On iiiaiiv tif the later jilales ttie >ee(in(lary eoiniioiient is plainly visible tlidUjih ver\- niiicli fainter than the primary, the ratio of intensities lieinn about 'A to 1. When the lines are super- imposed, the ~peeiriim >ho\\> a fairly {lood .\o type -peetruin, many of the iron lines, such as 4(l4."), hid:-!, 4(171 and other inetailie line> beini: \isible. .\t other times only the calcium line and the hydrojien seiie.-. ami magnesium 44M could be measured. TIic magnesium line in the eoinponei., peelruni seems to be weaker than the other lines for under all circumstances this line is fairly slKirj). The jieriiid \va> soon found to be approximately ti-n and one-half days and wlieii the obser\a1io)i> are plottecl on a single revolution they show that the orbit is (juite eccentric anti that the observations of the two components are clearl\- resohcd only on one-half of the orbit. The jireat difference in inten>ily of the two com|)onents make.s the mea>ures of the bU:nd follow the orbit of the jjiimary. In the solution for the elements all those obseiAatlons which showed siiifjle lines were a>sinned to the primary cur\'e and ■liven >inaller wei«:ht than tjiose obser\ations where the two >|)ectra could be measured. Two plate> taken near the cidssinn point but blended so a> to make the lilie> dilYuse were rejected entirely. The measure^ of the -econdary were also included in the >olution and fjiveii weifrhts as indicated in the table of obser\ations below. The columns tin- in older, the plate number, the dale of (ib-ei\ation and the .luliali I'ay. the M'locities obtained for comi)onents (uie and twd. the number of lino mea>ureil and the weights as^i^ned. the phase of the ob>er\ation u.-iiii; the linal period and finally the residuals which the linal elenient> }ii\e for the obsei\alion. Tlie-e were (.ietermined jiraphically. IDJiiT L^i^M^iisssmL^m^immsmmBm^^m^' •■y- j=T ^4.* ,c 234 niK ii\ \sri«ii'iivsii \i. i>nsi;ii\ \T'>K'i . w rmtiv I'liii.' Mioi i(\ \-||c>N< I ii II I: i.i'.'i VcllKllV Jul, 111, |l:it. 1 I I'i;s ■js.-. Miilv 1 l^il'.i IMS April L'l ■.'(li.J .lutii- 1 ■j:u:! .Inly i:! )(ir_' 1 \pril .") tIKil) ■■ 7 l(l."iO " ',t ■KHill ■■ III ■IdT'.i ,. |._, 4))'.ll •■ i:i iiiri .J J iir,7 ■• Jl •iiiiii 1 •• j:. ■liss " ;;(! 41".M> M;iv 1 121 !>< J fJls :! IJ 1 1 " .'■ ■r.'T!' 1 •• 1-' l.'Mt •■ 1.; i:ii)i 1 ■• 1.-, , ■t:!ll •• I'.i i:t;!i " 21 .i:!t:'. 1 " --'1 -i:i.-.i ' " -j: i:>r,(i •■ M) i:itis •• :il y.iW.i .hiiic -' . 1 KM •• 1 1 Hl'.i •■ 17 H2.S i " IS ii;!."i ; " i!i. 111! " --'(I 1 I.V.I 1 •• -'■'' llMl ] ■■ Js ll'.is 1 '■ -'',1 l,"i(ii; ' ■• :;ii 1,",lis ■' .111 I.MI 1 ■• :;n l.VJ.! .Inlv 1 ii„-.r. •• Jl .|7ln ■■ :H 1 2.121,771. 7-.: 2 (1711 'i.lii 2 111 s:;i; 2, I.".:; 7: 12 2. 1211 :ilir, 2 122 'Xii 2 121 s77 2. 12.". !i7(l 2. 127 M.:; 2, 12s^M,.; 2, l-is nil.", 2, 1.1' I •>■'<■'. 2, 110 V2I 2. II.'. ss7 2. 111. '.I2.'i 2, 117 '.Hir, 2 lis Ml 2. l."ill s.">2 2, I.'i7.s7s 2. I.'.s s:il 2, Hill s|:; 2. llilM7 2. nil'. v22 2. ir.'.l 7."iS 2. 172 MS 2. 17.'>-7i;(l ' 2. 1711. 77it 2 17s s (I) I 2, Is7 SI I ! 2. l!i:i 7!t."i 2. Ill 1.77s j 2. l'.l.Vsi:{ j 2. 1!M1.72I 2..'illl 7s(l 2. "ill I 7 Is 2..".ll."i 7.".s 2.. "I II. 71.". 2. '.I II. 7.". I 2 .".I M . s I I ' 2..MI7 7.;i 1 C.nip. 1 ( iiiiip . 11 j i ' '21 ' • 1 . . » .".il (i 2 s s 17 ". 211 t. IS 2 I". 2 :;."p.:i I'.I II I 17 1 I.", I , .". 1 :i I.". I I'.I 2 ; -iMi; I - :;:!. 1 '< I - 2sii j tliii'S : 211. s 1 •.7 I . 112 I'.I II 11.:) - 2:i o 1 1 '• 12'.! . si :i .".il Hi 11 1 1 . 12 • s7 II . Sll 2 • 20 7 . 7s 1 |-.",2 - I III I •,l I II s .".2 11 127 I 1 ;i:( 2 hi:; II l|:i 1 IiMi :{ :!'.! s I HI .". nil :i Ul'.i 2 s2 .'. l,",l Ii 1211 .'. I ; I i na.-»- I!. -I. lil:iK 2,122,420 Ci.liip 1 -).-) 1 i.ttip II •)) IMIS • ."l 11 s Ii 1 - 1.-, s s 2'.t • 111) II 1 I 7 I II (NHl 2 '.i:i I I s77 .". 1170 7 .sti:{ s (Hi;! s :ii.". 2 ! (I :!!t:i :! j 10 :!r.2 j 1 7117 i . so,", 1 :; II I I I. I ■ I 1 I 2 I I I 1 2 :i :l 1 .", :t 1 .i 2 1 '.I II 12 1 2 2 1 11 7sH 7 721 i '.I.7.T2 1 II I'.is 7 I". I '.I i:i:i 2.177 I .l..->s2 7r,\s \ oois 2. '.II 10 j :{.!l7i| I liOIII j 11.-. 1 10 ^r. i o..s.>s ! I '.r'H j 2. SOI j 7..S(10 I ii.2r.s 2:i II 12 f 2 :i r Ml .■. . 11 II 11 I . 'I Ii • 21 '.I - '.1 .". -OS . 10 S i -r s.l I ills t si - I 11 - ;io 12 I - 1 .", - :; 11 -II II -- 2 .*) - :{.(! + 2 -27 !l , + '.i-:i ; - 2.S - nil - '.i.r. ! 11 1 1 2 1 27S ^ ..... .12 '.\ '2 2 2:!.". — .-. :! 7 7 t - 2 271 - so 7 -Il I -' 2 :i:il r 2 11 .". :l 1 J :; 2.-|| i:i 11 .". 1 J 2. 1117 - (1 s 7 i 1_ •> 11127 — .". . 7 12 r '.I -1.1 rll -17 -ir. 'I'lir early (.liMMvatiiin- aiv very iionrly situatod for (lotcnnininn the period aeciirately. Tliey are >lin\\ii as M.lid tiiclr^ i.ii tlie nidial vehicity lurve ^^l\■^^\\ at the end nf tlie paper, and it can lie seen tlial the laM lliree tiave siaicely any \vei-:lil wliile the (irst is near a in,>rinii point. Tiiis ol.Mr\ation has to be lirmijiht I'orwaril siNly-i.ne revohitioiis. The ^^^^^ oiinir OK iiiK sPKcruost one minakv if.u. tiiti'i '.:\-> (tl)sciv!itioii- ill l'.»'_'() in\(i tell ri'viilulinii-. 1 1' \\i' >hil'l tlif cailx oIimtn iitiini fnnviinl to tlic ullicr (■ii>--iliti: |Miilil -iilin' III' tlw l;illrr iiliMivat ioli- wniilil lie ^lllt■t(Ml hiickwinl nearly h:ilt' a ilav ami tlii- i> not |)tiiiii~-ililc. Ilciirc itic early i>li~(i\ at inn i- a>^it{iii'(l t(i it> cciiitct |ila<(- ami inxirly -iliiatnl a> il i>. it lia> iiinrr ^scinlit in (IctcriiiiMinK tlic pcrind ihaii the iil.-i r\ at ion- in I'.fJtI. At'lrr alluwinn for tlir pro'ialil'' ctTict of lil'mlinic tlif jxrioil wa- tixcil at Id .")t'i day- ami not inclinlcd in tlic Ira-t - ucic ui"ii|> 7 s.'iJ II s .'» '1 ■..'II'.' ■Jll s ■.i HI 017 l!l 1 •» 1 I.J7 i-'ii :. 1 1 ■.'7s s7 ■ .'i 1 1 !ij:i -li:i 1 1 ~ " 1 ; 1 1 ■.' iisll - 1 .1.1 ■ ll lis 1 t ■> J '.i."il Uir, 1 - :;■.'.",! sj .", 1 7 171 ■ 1 ■-'■'■ 1 W. IL^Ill 1 nil I .'iiiil I I IKI III 1 ( ■ 1 ("•■ i ,r' I'll lllllll- 1 li:il I'rilini r>ir.i .iry . .; iis .1 ss IJ |:i • .'17 . ."l lili 'J Hi '1 ;il .'l till .Ml Hi • •> Jl 7 si( 1 1 .11 . ;; is 1 m Jl ll ■ 1 .-ll :v ■u » II ■ ;i Is II 7.! ll II 1 :is 1 (Ml 1 s (1 :(.' r 7'J 1 1 '» -1 1 l*> - ■J J ■ ( 1 - 1 ' 1- .1 - II 7^1 . 1 II II 1 11 .'.i II IIS II II . 7 1.". t li '.M :i."i :iii . 7 ll."i ._ r> t:i ;is lit . II s.-, .' c7 II 1 , -.'lit .-.li ■J 11 . 1 7!l . ISII 1 1 - s :;,'i 1 :il 70 ■ I - 1 17 t 7 11 s ■Jii 17 "ll - 7!I7 II. "l 1 -"' .'.' iiii Hi :i-.' l-'S I---, - :; 711 .-, :;i i " II I'Ull.l.MlN.VKV KI.KMKNT.s I'cliod i'lcccntricity Longitude of pcriastron S('ini-an)])litud(' N'clocity of system Periastron jiassa^e 1» = lOotJdays < = (1-43 w = and ISO K = (>:? knn. and 9S km. 7 = +17 km. T = J.I). 2,422,422 112 00925710 .*!•■ »VI-'-,V" '■TSu.;. ,^4i!^ 23(1 nil i.ipmimiin \sini>i'iiv>iiAi, oii^Kia \iiMiV. vnroiuv •||,.. |„,lnnin.',l\ .l.mrnl- |r;,vr ll,r n-Mlu:.l- h-l"l ni tl,r ImI.I.- ..I nnVIMMl |i1m.-.- „,„1,,, ,|„, |„:m1iiii: (1 C |.tvli,,iin,ii\. 1/-' t-r tt"' pinnary .■..in|.'.ii..nl I-IUO :,li,l i.ir thr -.■,•.,11,1:. r\ .V.W (•!,-,. rv :, I i,,ii .•.|ii:il l..ii- u.'i.' ii.aI Inriii.'.l. Ih.iIi K ali.l K: Im-IIih cdliil'lliril 111 ill'' -anil- -oliiti,,!, :i- -i-IKllalr uiikli. 'Un-. .,11-1 l:\ \l |.,N I ,.'i \l li'N- 1 2 3 4 5 (> S «> 10 11 12 13 14 15 16 17 18 19 20 21 22 IlilHx I II Ml 11(1(1 (1(1(1 ( l( l( I ( II H I I II l( I III in I II II I (1(1(1 U(ll) (KH) (1110 . ( l( II I I II 11 ) (1(10 (1(10 1100 '000 •000 (100 •000 (l7^\ s(i;i ■ I i:,s . 1 :;s;; • I i(i;'. ■ I (11,7 7 '.IS + ISO J'. II :m nciii n:. •_'liC> - so:?/ - 1 i.'ii; -1 ;is:! -1-(K'.7 - •7'.is - rit.' + •.')7il \XU[ ■_'l ll 1 I.M ins — SI III — '.MS — 1 '.!.'. 4 \v.\ + 1,0.') + (■.(« . 1 f 1 r I (lis :',:in 7i:; ■ SL'S ci:. ■jct '.ISO .M.-.s :;i;u\ , ;; (IS -- .",7.") 771 J 17 \2:> - ■:x\ » 't '.H Iss - ■M\ - .-) -Jl 1 \.\ \ •_'s7 - :r 4s I7S t- ■77i'i - \ -A S77 I ' 1 J •> - :ms lilS -•t- r,ti.' i r:5s 1S7 1- •_'ii:i f :r_' 2M\ t- (isr, t J 71 nti'.t ■\ •0_'J - 7S 07.") — .(i_'.') i ()•_':< :?o(> - 117 - 7 4.") H.-) — ■_'io - 7 0.") no't -+ 1 ■JJ 1 - OS.") (■)7J + 1 i.'.'.i - •_• 1)4 •J'. IS .V.rj - 1 70 •_"-':? — • -».-)() + s.:?,") 7.')() -1 •."Jil + 4 17 on - 1 . •)■)•> 4 17- .")4 '.177 -1 (147 4 ■_>•_>■(•)(•) O'Jl -+ •007 1 :< 7(1 wllCI'l' \ y / 11 \ w •h ,1K .IK. 100 .j. 100 .la' 100 ju .IT mill I 111- nil. -I'fi iitosc (>i'i< . HIS Mt^ ii.ii. ''."i' I'lulll lll(-i' Wr Ki'l llir Inlluwiliu lii.||li:ll (■( jllMl Inn- I.-, 7.-,(iN , ;! 7:,s\ -J 'ii:./. mi jsTu t ii (hi.>\ ♦ s ,v_'((\ n iHMi, ^.Mu n '*-:!\ ♦ :< '.iT'.i/. i> l-'iiii (I tVKK Hi :V-'"'ii KMlsiU 4 :M)s:'.-. . (I i:i7\\ . 1 .'liJw f I IIIHUv t I (I7(U\ ;', irj."i\\ f I '.MISw . Ill :t:.7 !• <• li»j 'I I'l |S(I I) t » i:(7 • tk, .IK iir -ft ■-'-• ( iiili;(lil<' iTnn- lifcuiiii' ti I'cliu.l 1' I •'•">•> 'lllV- llccciit licit y ( (I i:{(l l.iiMnitiicIc iif prii:i«1riiii cui = t • 1- 1^,= isr 1.' Semi uiiiplitudc K- = •>'_' U km. (l(l."( i-liiu;itiil OiJ ■J I ill •_' (ill 1 (IS km. Nclncity of sy>tciii l'cri!i>tr(iii passap' K., 101 :{(i km. ' 1 (>•» km. y -'.I ss km. ' OS.") km. T ,1.1). •_>,4J_'.t_'-' .^^li * (t (iKi (ia\>. II, fill 1 = S.lSO,(MMt km. II 2 sin i - Ki.'JSO.CKMI km. //// sin'^ i ini,->r iih>'' - 1 '.Mi III, si 11^ i •_' I'.t III: sill' i - 1 :?.')' !/)(■ \\a> iciliiccd to l(i(i for tiic primary ami to \'.\A for llir M'coiiilar> jiroliablc error for a plate of averane weight \va.- •• '_' km. for tlie iirimaiy for the secoiiilary. wliiie the ami • 4 :{ 2r?s TIM loMisios \^n(i)cin-»ii \\, OIIHKI«\ Mur{Y, VH TOIII » fSO oo km •60 h \ .q -, \ ^ o Q 7 1 \ /■ w- ^^ k I / ♦■20L. / \ / r 1 \ / / A / ^ \ / ./ ^ X .1 "A / i N ^ • o. ^ y \ -40^- \ ■ / ; ^v^ \ I jf^ 1 \ / \ ^^^^ ^— « • \ -sol \X — -J tTT -V 100 ■ ' \ ■ P — 1 \ - 120 ; 1 »4»-4_ — ■i 140 160 \l l\ V , nmgM] i 1 ( ) 1 2 3 4 5 6 7 8 9 10 11 Kiiliil V.^l.i.ity c 'u V,. "( 11,1!, ',ii;:i. l)()iiiiiii(iii .\>ln(|)liv>i( ;il ( »liscr\at(.ry. \ ictdiiu, li.C S( pt. I'.t:. (1. iiT\ZJlt~'-X^^.y:r7i^-- _ ^ ^i ^_= ' .>r-.~-'7^>; i:^fy_^^li.'^i^ !~'^iJiI^]x_-S-^^