CATALOGUE OF BINARY STARS. 



315 



2 1157 MONOCEROTIS. 



E. A. (i860), 7'^47»^ 30S. 

 Dec. S. 2° 26'. 

 Mags, a =8, b =8-3. 

 Colours: Secchi, 1856, both white. 





Epoch. 



P. 



D. 



Struve 



1831-20 

 1856-47 

 1863-11 





 267-27 

 256-44 

 256-77 



n . 



1-59 

 1-30 



1-29 



Secchi 



Dembowski .. 



85 Lyncis. S 1187. 



E. A. (i860), 8'io"i42s. 

 Dec. N. 32° 37'. 

 Mags, a =8, 6 =7-^. 

 Colours : Secchi, both white. 



Struve 



Madler , 



Secchi 



Morton 



Dembowski .. 



1829-50 



1837-69 

 1858-21 

 1860-28 



71-00 



68-25 

 61-65 



55-28 



1863-15 



56-28 



I-6I 



1-62 



i'75 

 1-83 

 1-83 



Z Cancel 



S 1196. 



E. A. 8I1 4"! 28S. 

 Dec. N. 18° 3' 14". 



A-.B. 

 Mags. « =6, 5 =7. 

 Colours: Smyth, 1843, yel., orange; 

 Webb, 1849, yellow. 



Herschel. 

 Smyth.... 



Fletcher 



Secchi 



Dembowski . 



Dawes 



Knott , 



Secchi 



1781-90 



3-28 



1832-23 



1853-17 

 1853-30 



28-30 

 322-70 

 321 -o'6 



1857-28 



303-92 



1864-15 



255*02 



1865-30 



243-42 



1866-26 



233-63 



1866-28 



234-62 



I -00 



1-30 



0-90 

 i-io 



0-77 



0-50 

 0-63 



0-78 



0-40 



Perihelion passage, 1853. 



A:C. c=7i. 



Herschel.... 



Smyth 



rietcher .... 



Smyth 



Dawes 



Dembowski 

 Secchi 



1781-90 

 1832-23 

 1852*49 



1853-17 

 1854-07 

 1865-17 

 1866-28 



181-44 

 149*40 

 143-68 

 144-10 



140-47 

 139-72 

 14070 



8-05 

 5-40 

 4-84 

 4-80 



5'OS 

 5*46 

 5-61 



P. VIII. 13 Cancel 



S 1202. 



E. A. (i860), S^i 5™ 54S. 

 Dec. N. 11° 16'. 

 Mags, ffl =8, 6 =10. 

 Coloiirs : a white, h ...1 



Epoch. P. 



Struve 



Dawes 



Secchi 



Dembowski .. 



1829-55 

 1848-24 

 1856-17 

 1863-12 



335-93 

 328-57 

 325-27 



327'45 



2'35 

 2-22 

 2-06 



2-50 



e HYDEiE. 



S 1273. 



E. A. 8^1 39™ 38=. 



Dec. N. 6° 54' 53". 



Mags, a =4, b =8^. 

 Colours : Smyth, 1843, p. yel., purp.; 

 Webb, 1857, yel., ruddy; Main, 

 1863, yellow, pale purple. 



Struve 



Smyth 



Dawes 



Fletcher 



Main 



Dembowski 

 Secchi 



1830-60 

 1837*11 

 1851-32 

 1852-96 

 1863*17 

 1863-13 

 1865-27 

 1 866-14 



i95'58 

 198-40 

 208-48 

 208-52 

 200-53 

 212-90 

 215-60 

 213-83 



3-33 

 3 '40 

 3-44 

 3"57 

 3 '40 

 3-47 

 3 '47 

 3'87 



Orbital periodabout45o'yrs.(Smyth). 

 157 Lyncis. 2 1338. 



E. A. (i860) 9I1 I2ni 12^. 



Dec. N. 38° 46' 42". 



Mags, a =6^, 6=7. 



Colours : Secchi, both white. 



Struve 



Madler , 



Dawes 



Morton 



Secchi 



Dembowski .. 

 Talmage 



1829-53 

 1838-10 

 1854-20 

 1854-24 

 1856-30 

 1863-28 

 1866-10 



121-14 

 127-10 

 134-64 

 137-30 

 137-18 

 140-95 

 142-48 



1*76 

 1-69 

 1-65 

 1-92 

 1*63 

 1*59 

 1-71 



w Leonis. 

 E.A. 9I12: 



Smyth. 



Dawes 

 Secchi 



S 1356, 



13^ Dec. N. 9° 38' 36" 

 , a =64,6 —j^. 

 Cols. : Smyth, 1843, p. yel., greenish, 



Herschel 

 h... 



!S..., 



i . . . 



Perihelion passage. 



1783-26 

 I832-II 



110-54 



160-00 



1843-14 

 1854-23 



1856-42 



1866-29 



193*00 



346*23 



o*99 

 32*92 



0-40 



0*50 

 0*30 

 0*55 



0-35 

 0-30 



