distances and positions of 3&0 double and triple stars , &c. 309 
a Lyras continued. 
parallel in the np quadrant, and therefore making an angle of 
84° with the position of the small star. Its velocity is 01375 
per annum, or 15" in 40 years. The change observed in the 
angle of position of the small star is in the same sense there- 
fore as that which would result from the proper motion of a, 
the small star remaining at rest, and its quantity (reckoning 
from the year 1792, the observations of that year being of 
course to be preferred from the great superiority of the instru- 
ment employed) 15 0 54', is almost precisely that which such a 
supposition would give it (15 0 47'), while the small decrease in 
the distance, since 1792, is also conformable to the same 
hypothesis. There is therefore every presumption : 1st, that 
the proximity of the large and small stars is merely apparent 
and accidental, no connection existing between them ; and 
adly, that the proper motions assigned to « are not very re- 
mote from truth. 
No. CCLXXIII. R. A. i8 h 36“ ; Deck 34 0 32' N. 
IV. 94 ; Struve, 584 ; 
Double ; 6 and 7 magnitudes ; large, white ; small, bluish. 
Position. 
6. 2 I 
6.30 1 
6. o 
5-n 
Mean ~ 5.5 
June 1 6, 1823. 
Five-feet Equatorial. 
nf 
Position = 5 0 51' nf 
Distance = 24". 630. 
Distance. 
Parts. 
78. 4l 
77. 2 
78. 5 
78. 2 
7 «- 5 , 
Mean — 78.16 
Z - — 0.17 
SS 
77-99 
1783.63; Pos. 5° 24' nf; Dist. 22190 ; H. Catal. of 1785. 
