Burnham: Measures of Proper Motion Stars 
B 
and C 
1911.720 
69?02 
45"53 
•775 
69.17 
45.62 
•777 
68.77 
45-22 
1911.76 
68.99 
45.46 
Some of the proper motions from 
star catalogue positions 
are: 
Auwers 
o''23i in 
i 85?9 
Boss 
0.237 in 
180.4 
Newcomb 
0.229 in 
179.2 
1217. 9 Per sex. 
P 875. 
(5.5...12.3) 
R. A. 2 h I4 m o ! 
’ Decl. + 55° 18' 
1911.813 
i62?8 
iT'23 
•931 
161.5 
II.41 
• 942 
161.4 
II.51 
1911.89 
161.9 
11.38 
If the principal star has 
any proper motion, it is very un- 
certain. There is no material change 
in the place of the faint 
companion. 
Auwers 
0"023 
in 242?1 
Boss 
0.005 
in 90.0 
Groombridge 
0.013 
in 212.1 
1224. 2254. (8.5. 
..10.0) 
R. A. 2 h I4 m 48 s Decl. + 23 0 5' 
1912.619 
35 I ° I 
12" 12 
.638 
352.9 
12.10 
.678 
352.2 
12.08 
1912.64 
352.1 
12.10 
The measures of the small star give 
the proper motion of A 
with the greatest accuracy, as the time base is more than eighty 
years. The four positions by 2, A and (3, on 11 n (1831-1912) 
give for this movement: 
o"o5i in 27 o?6 
1239. 
A.G.38. (8.7. 
.8.9) 
R. A. 2 h 
i6 m 45 s Decl. + 14 0 52' 
A and B 
1908.709 
260?58 
34"44 
.728 
260.73 
34-53 
.766 
260.90 
34.48 
1908.73 
260.74 
34-48 
A aiid C (1 x. 5) 
1908.709 
l 8 o?I 2 
126"16 
.766 
180.63 
126.10 
1908.74 
180.37 
126.13 
The larger components are supposed to have some proper 
motion. So far the measures of B show no change. No other 
measures of the distant star. 
1260 . 0 517. (7-5 --12.5) 
R. A. 2 h i8' n 54 s Deed. — 4 0 26' 
A and C (11.5) 
1912.675 289?38 55^83 
•695 289.57 56.35 
.717 290.60 56.18 
1912.69 289.85 56.12 
It is evident from the measures of both companions that the 
principal star (Lalande 4486) has no material proper motion. 
1262. 1 
Cassiopeiae. 
2 262 
R. A. 2 h I9 m 
10 s Decl. + 66 ° 52' 
C and D 
1908.520 
56?90 
2o6"l2 
• 537 
56.88 
206.20 
• 556 
57-00 
205.83 
1908.54 
56.93 
206.05 
rison we have: 
2 56?7o 
205"66 
2n 
r motion of 
the large star, if any, 
meridian positions: 
Auwers 
0"028 in 
270?0 
Boss 
0.014 in 
345-9 
Newcomb 0.010 in 
350.5 
1269. 02 (App.) 27. (6.7...7.7) 
R. A. 2 h 20 m 19 s Decl. + io° 2' 
A and B 
1910.950 
31-90 
73"42 
10.971 
31.97 
73.19 
11.088 
31.83 
73-76 
1911.00 
31.90 
73.46 
A and a (11.4) 
1910.971 
I54°85 
62" 12 
11.088 
154-65 
62.22 
1911-03 
154-75 
62.17 
. change in AB since 1875. 
1280. 
2270. (7.2.. 
.9.0) 
R. A. 2 h 22" 
" 21 s Decl. + 55 0 T 
A and C (10.6) 
1910.739 
337°9 
36" 18 
.742 
338.2 
36.46 
.760 
337-9 
36.27 
1910.75 
338.0 
36.30 
B1 
Since the proper motion, if any, is common to both stars, only 
measures of the third star are needed. 
A. G. Harv. o"i38 in I27?6 
107 
