CATALOGUE OF BINARY STARS. 



331 



a ScoEPii (Antares). 



E. A. 1 61 21™ 7S. 

 Dec. S. 26° 7' 50". 



A: a. 

 Mags, a =i,b =S. 

 Colours : Secchi, red, blue. 





Epoch. 



P. 



Dawes 



1848-02 

 1856-40 

 1857-40 

 1858-34 

 1861-09 

 1864-43 

 1865-56 

 i866-oo 





 273-17 

 273-48 

 270-00 



275-5^ 

 271-90 

 275-71 

 270-43 

 272-90 



Secchi 



Smyth 



Morton 



Powell 



Dembowski .. 

 Secchi 



D. 



3-45 

 2-99 



3'5o 

 3'29 



3-67 

 2-99 

 2-92 



X Ophiuciii. S 2055. 



E. A. 1 651 24"! 6=. 

 Dec. N. 2° 16' 53". 

 Mags, a =4, b —6. 

 Colours: Smyth, yellowish, smalt- 

 blue ; Webb, yellowish, tawny. 



0-50 

 0-84 

 i-oo 

 i-io 

 I -20 



1-31 



i'33 



Herschel. 



Struve 



Smyth 



Dawes 



Secchi , 



Dawes 



Secchi 



Dembowski 



1783-18 



75-30 



1825-51 



331-80 



1834-48 



351-20 



1842-50 



1-40 



1853-25 



15-50 



1854-14 



14-00 



1857-50 



19-88 



1860-36 



19-58 



1864-58 



22-18 



1865-49 



25-26 



1-25 

 I-5I 



Perihelion passage, 1798. 



Z Heeculis. S 2084. 



E. A. leii 36°! 12S. 



Dec. N. 31° 50' 41". 



Mags, a =3, 6 =6. 

 Colour: Smyth, 1842, yellowish wh., 

 orange; Dembowski, 1863, ayell. ; 

 Secchi, 1858, yellow, violet. 



Herschel. 

 Struve.... 

 Smyth.... 



Secchi 



Dembowski 



Secchi 



Dawes 



1782-55 

 1826-63 

 1835-68 



1842-57 



1852-53 

 1858-47 

 1863-49 

 1865-55 



69-18 



i-oo 



23-24 



0-91 



190-00 



0-50 



136-90 



1-20 



83-80 



1-30 



54-59 



1-06 



342-45 



wedg'd 



86- + 



single 



229-22 



0-83 



Perihelion passage, 1825. 



S 2106 Ophiuciii. 



30'. 



E. A. (i860) i6>'44" 

 Dec. N. 9° 39'. 

 Mags, a =6-2, b =7-8. 

 Colours: Secchi, 1856, yell, wh., bl. 





Epoch. 



P. 



D. 



Struve 



1827-31 

 1856-45 

 1863-53 



337-50 

 328-40 

 321-30 



1/ 

 i-oi 



Secchi 



Dembowski .. 



0-84 



0-50 



Heeculis 167. 



S 2107. 



46™ 18s 



E. A. (i860), 16 

 Dec. N. 28° 54'. 

 Mags, a =6i,b —S^. 

 Colours: Secchi, 1856, yellow, blue, 



Struve.. 

 Madler 



Dawes 



Secchi 



Dembowski 



1829-91 



148-63 



1842-10 



161-70 



1852-85 



176-36 



1856-59 



175-43 



1865-08 



189-28 



1-03 



i-i6 



0-97 

 0-93 



P. XVI. 270 Ophiuciii. 



2 2114. 

 i8^ 



E. A. fi86o), 16^ 55 

 Dec. K 8° 39'. 

 Mags, a =7, b =S. 

 Colours: Smyth, 1832, both white 

 Morton, 1859, whi., bluish white. 



Struve 1830-97 



Smyth 1832-41 



Dawes 1847-63 



1856-84 



1859-30 



Secchi . 

 Morton 



135-40 

 137-00 



143-38 

 145-25 



147-38 



■34 

 -50 



1-25 



I-3I 



Hercijlis 210. 



S 2120. 



R. A. (i860), i6>i 59^" 6^. 

 Dec. N. 28° 17'. 

 Mags, a —6\, 6 =9. 

 Colours: Secchi, iS 56, yellow, blue. 



Struve.. 

 Madler 



Morton 



Secchi 



Dembowski 

 Talmage 



1833-25 



3-80 



3-44 



1842-30 



345-48 



2-73 



1848-55 



322-72 



2-31 



1855-61 



298-50 



2-57 



1856-75 



290-45 



2-48 



1865-09 



272-89 



2-98 



1866-44 



272-94 



3-5«' 



