Burnham: Measures of Proper Motion Stars 
10033. 3 Capricorni. P 294. (5.7...14.0) 
R. A. 20 h 9 m 44 s Decl. — 12 0 42' 
A and B 
1912.678 
34-6 
26T94 
•695 
34-0 
26.98 
.698 
36.1 
26.89 
1912.69 
34-9 
26.94 
From the three positions by A and P (1891-1912) the proper 
motion of 3 Capricorni is: 
o"o30 in H7?7 
Further measures of the faint star will reduce the error in 
the value given. The meridian positions make the components 
of the movement very uncertain: 
Auwers o"o20 in 275% 
Boss 
0.015 in 
169.0 
10040. 
P 983. (6.1.. 
.10.2) 
R. A. 20 h 
io ra 11 s Decl.+ 25°i4' 
A and C (12.0) 
1912.581 
83?20 
115-24 
.583 
83-17 
115.87 
.619 
82.83 
116.35 
1912.59 
83.07 
115.82 
For the proper motion of the close pair. No other measures. 
The only proper motion found for the large star in the star 
catalogues is: 
Boss o"oo3 in 233^6 
10044. 22658. (7.0...9.1) 
R. A. 2o h io m 29 s Decl. + 52 0 45' 
1911.449 
.471 
.487 
A and B 
H 5-4 
116.9 
114.8 
5-77 
5-36 
5-65 
1911.47 
H 5-7 
5-59 
A and C (10.2) 
1911.449 
209?38 
46"o8 
.471 
210.00 
46.10 
.487 
209.80 
46.25 
1911.47 
209.73 
46.14 
From the measures of AC on 15 n by 2 , A, Hu and p (1832- 
1911) the proper motion of A is: 
o"i 87 in I3?8 
The apparent motion of A from the measures of AB on 20 n 
by 2 , A, HI, Hu and P (1831-1911) is: 
o"oi3 in 2i3?8 
Therefore the real motion of B is: 
oT 175 in I 2?3 
A system of the 61 Cygni type. 
Some of the determinations of the proper motion of A from 
meridian positions are: 
Groombridge 
o"i 75 
in 
16 °6 
Porter 
0.152 
in 
8.2 
A. G. Harv. 
0.169 
in 
i 5 -o 
Bossert 
0.166 
in 
15-8 
10048. 
H 2944. 
(8.4...11.8) 
R.A. 20 h 
io m 39 s 
Decl.+ 6 o° 1' 
I 9 H -375 
19H2 
25"25 
• 392 
190.5 
25-57 
• 395 
190.9 
25.21 
1911.39 
190.9 
25-34 
No other measures. 
10054. a' Capricorni. H 607. (4.5...9.0) 
R. A. 20 h n m o s Decl. —12° 53' 
1911.468 
A and C 
22H35 
45 ”°i 
• 471 
220.90 
45.18 
• 509 
222.03 
44.72 
•529 
221.05 
44.99 
1911.49 
221.78 
44-97 
Comparing this with my measures in 1879, we have for the 
proper motion of a' Capricorni: 
o?025 in 74°5 
Some of the values from meridian positions are: 
Auwers 
o"oi4 
in 
328?4 
Newcomb (Stand.) 
0.005 
in 
48.7 
Newcomb (F. C.) 
0.014 
in 
69.1 
Boss 
0.016 
in 
67.7 
The measures of both companions should be continued. 
10057. a 2 Capricorni. 
R. A.20 h 
n m 24 s Decl. 
— 12° 55' 
A and D (10.7) 
1909.512 
156^92 
I 54"67 
• 5 i 5 
156.97 
i 55 -i 6 
• 531 
156.83 
I 54-76 
1909.52 
156.91 
154.86 
From this and the P measure of 1879, the proper motion of 
the large star is : 
o"o53 in 5 o?6 
This from meridian positions is given: 
Auwers 
o'.'o40 
in 
7 i°i 
Boss 
0.059 
in 
85.1 
Newcomb 
0.045 
in 
89.6 
The measures of the faint star should be continued. 
254 
