223 



MK. ALFRED BROTHERS S 



/i Dbaconis. 

 E. A. 17 



S 2130. 



33^- 

 Dec. N. 54° 39' 7". 

 Mags, a =4, b =41. 

 Colours: Smyth, 1839, both white ; 

 Main, 1862, both wliite. 



Epoch. P. D. 



4-35 

 3-23 



3-30 

 3-00 

 2-92 

 2-74 

 2-83 

 2-63 

 2-84 

 2-79 



Herschel 1781-73 232-22 



Struve 1832-22 205-06 



Smyth 1839-53 200-30 



„ 1854-58 190-70 



Morton 1854-67 *8-22 



SeccM 1857-50 188-37 



Dawes 1859-73 185-47 



Dembowski .. 1863-14 ^2-42 



Main 1862-41 



Secchi 1865-59 181-84 



Orbital period, about 600 years 



(Smyth). 



^' These measures should evidently 



be -j-180. 



36 Ofhiuciii. 



E. A. 17I1 7™ i^ 



Dee. S. 26° 23' 28". 



Mags, a =4i, b =6^. 

 Colours: Smyth, 1842, ruddy, pale 

 yellow; Webb, 1854, both golden 

 yellow. 



Mayer. 

 South . 

 Smyth. 

 Dawes. 

 Smyth. 



)j 

 Secchi . 

 Main . 



1780-00 



360-00 



1825-17 



228-28 



1835-33 



221-40 



1841-59 



219-26 



1842-46 



2i6-6o 



1857-39 



213-80 



1857-55 



211-30 



1862-43 



212-47 



13-00 

 5-20 



5-00 



4-78 

 4-90 



4-60 



4-29 



4-22 



S Herculis. 



S 3127. 



' 29^ 



E. A. 1711 9" 



Dec. N. 25° o' 3". 



Mags, a =4, b —S^. 

 Coloiu-s: Smyth, 1839, greenish wh., 

 grape red; Main, 1862, straw-co- 

 loured, reddish; Webb, 1865, pale 

 yellow, lilac. 



Herschel 



Struve 



1779-61 

 1829-77 

 1839-62 

 1857-50 

 1862-38 

 1863-14 

 1866-72 



162-28 

 173-42 

 175-10 

 177-97 

 177-59 

 179-39 

 179-61 



Smyth 



Secchi 



Main 



Dembowski .. 

 Knott 



33-75 



26-11 



24-50 



21-92 

 20-02 

 20-50 

 2o-i8 



p Hehculis. 2 2161. 



E. A. 17I1 19™ 2S. 

 Dec. N. 37° 16' 23". 

 Mags, a =4, b =5-|. 

 Coloiirs: Smytli, 1839, bluish white, 

 pale emerald; Main, 1862, both 

 bluish white. 



Epoch. P. D. 



Herschel 

 Struve... 

 Smyth... 



Dawes... 

 Morton 

 Secchi . . . 

 Main ... 



1779-66 



1830-35 

 1839-74 



1853-39 

 1854-73 

 1855-65 

 1856-60 

 1862-37 



300-21 

 307-22 

 308-90 

 310-50 

 308-83 



309-45 

 309-71 

 309-50 



2-97 

 3-60 



3-70 



3-50 

 3-91 



3-84 

 3-83 



3-61 



2 2173 Ophiuchi. 



E. A. (i860), 1711 24™ 12^ 



Dec. S. 0° 58'. 



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

 Colours: Secchi, 1858, yell., orange. 



Struve . 



Dawes. 

 Secchi . 



1830-84 



323-80 



1836-71 



single 



1848-45 



158-45 



1858-56 



325-92 



0-62 

 I-II 



0-84 



Jul Herculis. 2 2220. 



E. A. (i860), i7i'4i™os. 



Dec. H. 28° 48'. 

 B:C. 



Mags. (Knott),o = 10-5, 0=10-7. 

 Colours : Knott, bluish white. 

 Dawes.. 



Knott 



Dembowski 



1858-77 



59-91 



1864-43 



.77-5.9 



1865-43 



79-61 



1865-44 



81-98 



1-83 



1-20 



T Ophiuchi. 2 2262. 



E. A. 1 711 55=^^3^ 



Dec, S. 8° 10' 36". 



Mags. « =5, 6 =6. 

 Colours : Smyth, 1 842, pale white. 



Herschel 1783-37 331-60 oblong 



Struve 1836-62 199-90 0-44 



Smyth 1842-52 227-00 0-90 



„ 1855-34 238-80 i-io 



Dawes 1854-67 238-05 1-22 



Dembowski ..1863-05 244-57 1-40 



Knott 1863-59 246-84 1-20 



Secchi 1866-70 248-05 1-60 



Orbital period, about 130 years 

 (Smyth). 



