Burnham: Measures of Proper Motion Stars 
There seems to be a proper motion in one of these stars of 
about o'T7. The relative change is confirmed by the meridian 
positions in the A. G. Stras. and Warsaw Catalogues. To show 
whether or not the smaller component has any motion, I have 
connected a star n.8m: 
A and C 
1910.260 
340?10 
68? 4 6 
.26 3 
340.30 
68.00 
.299 
340.18 
68.20 
1910.27 
340.19 
68.22 
1911.414 
340?10 
68" 52 
• 430 
340.25 
68.53 
• 433 
340.45 
68.54 
1911.43 
340.27 
68.53 
B and C 
1910.260 
243-86 
68785 
.263 
244.28 
68.77 
.299 
244.45 
69.35 
1910.27 
244.20 
68.99 
1911.414 
244-57 
69" 19 
• 430 
243-83 
69.65 
•433 
244.22 
68.83 
1911.43 
244.21 
69.22 
7596. y Herculis. Sh 227. (3.5...9.5) 
R. A. 16" i6 m 38 s Decl. + 19 0 26' 
B and C (12.2) 
7612 . 23 Herculis. (6.4...9.0) 
R. A. i6 h i8 m 20 8 Decl. + 32 0 37' 
1911.411 i8?6o 34'' 08 
.430 18.08 34.13 
•433 18.25 33.96 
1911.42 18.31 34.06 
The four positions by 02, A and (5 (1840-1911) give for the 
apparent motion of A: 
o"o26 in 22? 1 
02 calls the companion 8.5m; and A 9.0m. It is possible, 
though not probable, that.this has some motion of its own. 
The catalogues give for A: 
Auwers 
0"020 
in 
146^2 
Boss 
0.022 
in 
144.9 
Newcomb 
O.O36 
in 
141.2 
54 . co Herculis. (3 625. 
(5.0...12.0) 
R. A. i6 h 
19™ 53 s Decl. 
+ 14° 19' 
A and C (11.5) 
1907.444 
IOI ?2 
3i"73 
• 463 
101.7 
32.11 
.482 
102.0 
31.70 
1907.46 
IOI .6 
31-85 
The six positions of the distant companion (1879-1907) give 
; for the proper motion of A: 
o'.'o84 in I32?6 
1910.225 
297?60 
84"59 
.260 
297-33 
84.94 
.263 
298.00 
84.59 
1910.25 
297.64 
84.71 
It is very probable that B has no sensible proper motion; and 
that the value of the movement of A derived from the measures 
From meridian observations: 
Auwers o'.'06s in I59?i 
Boss 0.078 in 146.1 
A later set of measures will not sensibly change the result 
given above: 
(1844-1903) is more nearly correct than 
that from meridian 
1912.353 
ioi!o 
31 "41 
observations. 
For greater certainty I have connected a faint 
.389 
100.8 
31-53 
star with B. 
.408 
101.5 
31.48 
Measures 
o'.'o66 in 
340°3 
1912.38 
IOI. 1 
31.47 
Auwers 
0.083 in 
308.6 
Rechenberg 
0.080 in 
305.3 
Newcomb 
0.060 in 
307.5 
Boss 
0.062 in 
309.0 
7633. 
2 2048. (6.3. 
•9.o) 
R. A. i6 h 
22 m 20 s Decl. 
— 7° 52' 
7597. Ho 
402. (8.5... 
12.0) 
A and C (11.7) 
1910.263 
299-30 
I3i"78 
R. A.i6 h i6 m 
47 s Decl. — 
12 0 52' 
• 397 
298.80 
132.21 
9"47 
.414 
299.37 
132.07 
1910.452 
230.7 
■ 458 
229.3 
9-31 
1910.36 
299.16 
132.02 
1910.45 
230.0 
9-39 
For the proper motion of AB. 
Wrongly identified in Ho; the SD number is 4499 instead of 
Bossert o"ii4 in 
195° 1 
4497- 
Porter 0.079 in 
228.8 
211 
