distances and positions of 380 double and triple stars, 171 
No. CL. R. A. i2 h 33 ra ; Decl. o°27'S. 
7 Virginis ; Struve, 420 ; III. 18 ; 
A very beautiful double star ; both white and equal 
Position. March 22, 1821. 
*4 
*4 
*4 
H 
Mean — 14.42 
Position. 
O or 
90—76.45- 
78.55 
78.50 
78. o 
76.45. 
75 - 5 °' 
77. 2 
77- 2 3 
77. 6 
77 
Mean — — 77-23 
Five-feet Equatorial. 
s f 
Position = i4°»42 / 5/ 
Distance = 
April 10, 1823. 
Five-feet Equatorial. 
very nearly equal. 
s f 
Position = 12° 37' sf 
Distance = g".42 7. 
Distance. 
Parts. 
12. 7) 
* 3 - °> 
15. o) 
14 - 9 ) 
14. 2 S 
! 4 - 4 > 
H 
Mean ~ 
Z — 
» 4 - 3 
0.08 
1 3-95 
Mean — 1 1.58 
Z = — 0.73 
10.85 
Mean Position 13 0 24' sf Distance 3". 794. Epoch 1822.25. 
Other measures are, 
1720.31 Position 49 0 7' np; Cassini, by an occultation of y by the moon, com- 
puted by M. Walbeck. — Zach. Corr. Ast. viii. 517. 
1756. o 54 22 np; H. Account of Changes, &c. computed from the right 
ascension and declination in Mayer’s Catalogue. 
1781.89 40 44 sf; H. Catalogue of 1782 
1803.20 30 19 np; Ditto, mean of 6 measures in 1802, 1803. 
1820.20 15 15 np; Struve, Additamenta, 178. 
