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Double Star Observations Made at the Lick Observatory in May, June and July 1889

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Double Star Observations Made at the Lick Observatory in May, June and July 1889 ASTRONOMISCHE NACHRICHTEN. NZ 2956-57. Double Star Observations made at the Lick Observatory in May, June and July 1889. By 5. w.BUl.lZhlZ7iZ. The following double star observations have been made since the preparation of the last preceding list (A. N. 2929-30), and principally in the months of May, June and July of the present year. Since that time the large telescope has been used the greater part of the time for other work. During the period mentioned, 62 new pairs have been discovered and measured; and measures made of 98 of the more interesting and difficult pairs from former catalogues; altogether comprising 628 separate measures. This work has been done with the 36inch equatorial with the exception of the measures of a few southern stars which could be more conveniently made with the smaller telescope. The present catalogue of new stars is the sixteenth in order of publication. These lists have appeared as follows : First Catalogue Nos. I to 81 Monthl. Not. March 1873 Ninth Catalogue Nos. 453 to 482 Monthl. Not. Dec. 1877 Second 8 > 82 L: 106 8 May 1873 Tenth )) )) 483 D 733 Memoirs R.bS Vol. 44 Third D D 107 m 182 > Dec. 1873 ~ Eleventh % B 734 B 775 Lick Obs. Publ. I Fourth D P 183 r 229 D June 1874 Twelfth B B 776 * 863 Washb. Obs. Publ. I Fifth )) P 230 D 300 D Nov. 1874 Thirteenth 3 B 864 a 1025 Memoirs R.A.S. VoI. 47 Sixth n )) 301 P 390 Astr. Nachr. No. 2062 Fourteenth B 1026 D 1038 Astr. Nachr. No. 2875 Sevenrh P P 391 m 436 D 2103 Fifteenth Y D 1039 P 1092 b a 2929-30 Eighth )) 3 437 P 452 hmer.;ourn. of Sc. J~ly1877 I Sixteenth 2 )) 1093 L) I 154 The present Catalogue, The places of the stars are given, as heretofore, for 1880. The instrument used in each observation is given .in the last column. New Double Stars. (Sixteenth Catalogue.) fl 1093. Lal. 375. p 1096. AOe. 534. R.4. oh I 4m43s Decl. + I ooI 9'. RA. 0~29~46~Decl. +57O51' 1889.630 i 55?8 , 0137 ~ 7 , 8 I 36 A and B. .633 57.8 I 0.42 7.5, 8 36 1889.594 2b5?2 .687 1 49.2 0.39 j 7.51 8.5 36 ' I .67 I 267.9 1889.65 543 039 7.3, 8.2 I I I I ,673 269.9 The following of three bright stars. /3 1094. Lal. 655. RA. oh 23ll13sS Decl. +59" 19'. 1889.526 ~ 242.8 0.60 5 , 9 36 .534 , 244.3 j 0.81 ~ 6 , 9.5 36 .537 I 246.6 0.70 i, 6 , 10 36 .~ .- 1097. Radcl. 159. 1889.53 j 244.6 0.70 I 5.7 , 9.5 RA. oh 3on13oS Decl. +57" 21'. .. 1095. 28 Andromedae. 1889.594 72.1 RA. oh ~3~47~Decl. +29O 5'. a597 69.9 .608 7 1.5 1889.509 0.4 2.37 , 8 '3 36 j 5-5 ; .61 I 7 2.8 .512 0.1 1 2.33 5.5, 14 : 36 -___. I 889.60 .5'5 1 359.7 __I 2.55 j 5.5, 13 1 36 71.6 O.57 I 8*4~8.4 I 1889.51 I 0.1 1 2.42 1 5.5 , 13.3 I The magnitude in Radcl. is 7.4, and in DM. 7.0. (Bd. 124, 4 2956 52 A and BC. I 889.583 265?3 60:'30 8.5, - I2 .58h 265.4 60.26 8.5, - 36 7889.594 I 7504 1 l2!'77 I 5 13.5 36 I 265.6 60.3 I I .608 i 12.61 6 13.5 36 _____.589 8.5 - I 36 ,611 I ;;.: 1 12.99 1 6 13.5 36 1889.58 265.4 60.29 8.5, - I The principal star is Radcl. 430, and is 1~41~f. d Cassiopeiae, and 2'58" n. @ I 103. 44 Cassiopeiae. RA. 1~35~12'Decl. +59" 56'. 1.63 1 6.5, 12.5 I 36 1.81 j 6 , 13.5 1 36 p 1104. Groombridge 370. RA. 1~35~~51'Decl. +52"17'. p I 100. Lal, 21 55. RA. I 7"sS Decl. 4-60" r 8'. 1889.589 1 199.1 .6x1 I 195.2 1889.526 1 45.3 I '0.5' I 7.5 t 7.5 ! 36 ,616I 197.4 0.41 I 7.31 7.3 1 36 1889.60 1 197.2 Found with the 12inch. 1889.54 I 43.6 I 0.48 I 7.4 I 7.4 I @ 1105. Pleiades. 1x01. p Cassiopeiae. RA. 3h41m26s Decl. +23"49', RA. ih17~~27~ Decl. +67"30'. 1889.589 1 60.2 A and B. 034 ! 9.5, ro 36 ,594 I 58.4 0.33 1 8.8, 10 I 36 36 .689 j 54.6 II .__-___________0.31 9.5, 1 36 36 1889.62 I 57.y 0.33 I 9.3, 10.3 i 36 a534 1 40.6 I 3 24 36 Rather difficult pair 1~4'f. and 413 n. of Alcyone. It 1889.52 I 41.2 I 3.19 is DM.+23?554. /3 I 106. Pleiades. A and C (= 2 R.4. 3h42m58s Decl. +23" 5 1'. 107.3 1 28.21 1889.594 51.7 I 0.40 I 1.5, 11.5 36 .526 I 107.2 ' 27.84 Difficult pair; too faint for the DM. Place from the .534 ~ 107.4 I 28.10 Paris map of the Pleiades. It is 55' f. and 416 n. of 1889.52 I 107.4 , 28.01 28 Tauri (Pleione). p 1107. AOe, 12884. C and D (= 2' 117). RA. 13~20~36~Decl. -2 1'44'. I 1889.515 255.6 I 2.83 9-51 9.7 36 1889.35 I 1.36 8.5 ! XZ 255.0 ~ 8.5, .523 1 2.87 9.5 1 9.7 36 - 8.6, 8.6 12 .526 I 254.5 2.87 9.8, 10 36 -373 *375 -_ - I2 .534 253.9 2.88 9.5 I 9.7 36 1 I i 1.18 .378 8.5 8.5 i 36 1889.52 I 254.7 I 2.86 9.6, 9 8 .38I 0.98 -> - 136 The new star is not difficult. I 887.3 7 1.1 7 8.5 I 8.5 I p 1102. AOe. ;lo, p I 108. B.A.C. 4631. RA. 13~46~32~Decl. -3594'. A and B. 1889.583 335.6 0.93 10.5, 10.5 12 1889.373 81.3 1.48 : 6 I 6 12 .586 335.3 0.82 10.5, 10.5 36 ,383 1 86.9 1 1.14 I 6 6 ' 36 .589 338.0 1 0.77 1 10 I0 --36 .386 I 83.9 1.21 1 -, - 1 36 1889.58 I 336.3 I 0.84 1 10.3, 10.3 1889.38 I 84.0 I 1.28 I 6 6 I 53 54 A and D (= HIV.24). #lr113. B.A.C.4886. 1889.383 35901 1 65125 -, 8.5 36 RA. 14~41~21~Decl. +2"32'. .386 I 359.0 1 65.18 -,-- - 36 _____.__- - 1889.397 ~ 13701 4!'63 6 , 11.5 36 1889.38 359.0 65.21 - , - .400 I 136.7 4.42 6.5, 12.5 36 A and C. ---.4O3 137.6 4.58 I 6 , 11.5 36 1889.386 168.2 27.5a -, 12 I 36 1889.40 137.1 I 4.54 I 6.2, 11.8 Magnitude in DM. 7.7. /3 I 109. DM. +502846. KA. 14~3~18~Decl. +5O14'. A and B. #l I I 14. B.A.C. 5090. RA. 21~42~Decl. -28O 27'. ,I 889.38 I 321.3 1.83 1 -, 13.5 ish .386 322.6 1.62 - 1 I4 A and B. 321.8 1 1.88 - , 13.5 .. - -397- . __ __ 12 1889.373 3'9.7 ' 0.73 , 7 9 7,s 1889.39 321.9 I 1.78 - I '3.7 -383 3253 I 0.52 , 7 * 7-3 36 A and C. .386 I 331.5 0.69 i 7 , 7 36 __ - -__ - - - - - I I 889.38 I 356.0 53.02 ' 9 , 9 1889.38 325.7 I 0.65 I 7 9 7.3 1 .386 356.1 , 53.02 ~ 9 1 9 .397 356.8 I 53.08 j 9 1 9 AB and C (= H, 4774). 1889.39 356-3 53.04 I 9 9 9 9.28 1 - , I1 1889.373 5.8 j 12 .383 6.2 ' 9.27 1 - , 9 I 36 8 I I 10. Taylor 6665. .386 7 . ~ k5 ' 9.09 - ~___9.5 I 36- KA. 14~I 2"'2gS Decl. -36O 18'. I 889.38 5.8 1 9.21 -, 9.8 I 1889.389 127.7 3.82 6.5, 12 1 I2 There seems to be no change in the angle of the 1310 4.00 I 7.5, 12.5' 12 .392 I wide pair, as Herschel found 8?5 in 1834. .408 133.3 1 4.02 1 7 1 12-51 12 1 889.39 130.7 I 3.95 1 7 01 12.3 #l I I 15. Lal. 29840. ,f I I I I.
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