CATALOGUE OF BINARY STARS. 



219 



^ BOOTIS. 



E. A. 14^ 45™ gK 



Dec. N. 19° 39' 48". 



Mags, a =2h ^ ~ ^i- 

 Colours : Smyth, 1 842, oran., purp. ; 

 Webb, 1850, clear yellow, reddish 

 purple; Main, 1862, straw-colour 

 aud reddish. 



Herschel. 



Struve 



Smyth.... 



Dawes 



Secclii 



Main 



Dembowski 



Secchi 



2;e. 



Epoch. 



P. 



D.- 



1780-28 



24-07 



3-42 



1829-46 



334-" 



7-22 



1831-53 



332-10 



7-30 



1842-42 



322-90 



6-90 



1852-38 



316-80 



6-50 



1854-46 



311-98 



6-26 



1856-88 



310-05 



6-01 



1862-33 



305-53 



5-68 



1864-91 



301-58 



5-44 



1865-77 



300-82 



5-41 



1866-48 



298-53 



5-C9 



Perihelion passage, 1779. 



44 BooTis. 



S 1909. 



E. A. 14^ 59^^ 21S. 

 Dee. N. 48° 10' 51". 

 Mags, a =5, 6 =6. 

 Colours: Smyth, 1842, white, grey; 

 Main, 1862, yellowish; Webb, 

 1865, pale yellow, tawny. 



Herschel 'i 78 1 -62 



Struve 1832-24 



Smyth [1839-62 



„ I1847-45 



Fletcher I1851-47 



Dawes 1854-74 



Secchi '1856-40 



Main 11862-42 



Dembowski ..'1863-31 



60-06 



1-50 



234-01 



2-86 



235-30 



3-50 



236-20 



4-10 



237-95 



4-26 



237-77. 



4-5« 



238-80 



4-55 



238-30 



4-61 



239"53 



4-75 



1 CoRONiE BOEEALIS. 



S 1932. 



E. A. (i860), 15^ 12" 18^. 

 Dec. N. 27° 21'. 

 Mags, a =6, b =6-^. 

 Colours : Secchi (1856), both white. 



Struve 1830-28 



Madler 1^39-52 



Dawes 1854-40 



Secchi 1856-40 



Dembowski ..|i 863.28 



273-85 

 278-47 

 284-07 



285-37 

 290-27 



1-62 



1-53 

 1-36 

 1-14 

 1-18 



ri CoEONi'E BOREALIS. S 1937. 



E. A. 151^ 17™ 37^ 

 Dec. N. 30° 46' 44". 

 Mags, a =6,b =6^. 

 Colours : Smyth, 1 842, white, golden 

 yellow ; Webb, white, yell. ; Dem- 

 bowski, 1863, white. 



D. 



Herschel. 

 Struve.... 

 Smyth..,. 



Secchi 



Dembowski 



Dawes. 

 Secchi. 



Epoch. 



P. 



1781-61 





 30-41 



1826-76 



35-16 



1832-63 



57-20 



1842-58 



151-30 



1852-43 



246-80 



1858-51 



359'i9 



1863-03 



19-04 



1865-49 



27-40 



1865-44 



27-52 



1865-50 



26-26 



1866-53 



33-13 



i-oc 



1-08 

 0-80 



0-50 



0-50 



0-53 

 0-81 



1-02 

 1-07 



0-79 



1-12 



Perihelion passage, 1830. 



11^ BooTis (P. XV. 74). S 193S; 



E. A. i5hi9m 25S. 

 Dec. N."37° 49' 18". 

 Mags, a =S, b =2i. 

 Colours : Smyth, 1 S'42, greenish wh. ; 

 Secchi, 1856, white, blue. 



Herschel. 



Struve 1829-73 



Smyth 1832-31 



1842-52 

 1853-60 

 1857-44 

 1863-63 

 1864-41 

 1865-46 

 1865-13 

 1866-57 



Perihelion passage, 



Secchi 



Eomberg . 



Knott 



Dawes 



Dembowski 

 Secchi 



357-14 



1-50 



324-05 



1-25 



321-40 



1-30 



306-10 



0-80 



255-00 



0-50 



231-33 



0-48 



195-80 



0-75 



193-64 



0-50 



190-07 



o-a8 



186-29 



0-50 



180-30 



0-30 



d Serpentis. 



S 1954. 



E. A. 15I 28™ 21^ 

 Dec. N. 10° 59' 32". 

 Mags. « =3, 6 =5. 

 Colours : Smyth, 1 842, bright white, 

 bl. white;, Main, 1862, both white. 



Herschel. 



Struve.... 

 South.... 

 Smyth.... 



Secchi 



1782-99 



227-12 



1802-10 



208-50 



1821-33 



199-13 



1842-35 



196-20 



1851-32 



196-50 



1855-88 



195-52 



3-00 



3-05 



2-80 



3-00 



3-06 



[Contivited. 



"q2 



