Burnham: Measures of Proper Motion Stars 
12019 . 15 Laccrtac. |3 451. 
(5.1...12.0) 
A and C (10.5) 
R. A. 22 h 46 
m 37* Decl. + 12 0 40' 
1907.638 
279°9 
24-33 
.695 
279.6 
24-34 
A and B 
•731 
280.0 
24.36 
1908.518 
132^23 
28"34 
•750 
281.0 
24.17 
.520 
132.78 
28.08 
1907.70 
280.1 
24.30 
• 537 
132.28 
27.93 
Probably unchanged. Measured by Doolittle in 1906. 
1908.52 
132.43 
28.12 
The five measures of 
B (1888-1908) 
give for the proper 
motion of 15 Lacerlae: 
12036 . 
3 382. (6.0.. 
8.0) 
o'.' 
126 in 76? 2 
R. A.22 h 4S m 
18 s Decl. + 44 0 7' 
From the star catalogues: 
AB and C (10.7) 
Auwers 
o!'o 97 in 
S 5°9 
Boss 
0.106 in 
81.3 
1911.720 
354°8 
27 " 4 i 
.736 
355-5 
27.35 
A 
and C (11.9) 
•775 
354-8 
27.35 
1908.518 
309^89 
102786 
I 9 II -74 
355-0 
27-37 
.520 
310.00 
102.91 
The apparent change appears to be due to a very small proper 
• 537 
309.67 
102.89 
motion in AB. Further measures are necessary to give this a 
1908.52 
309.85 
102,89 
definite value. 
Groombridge o!'o20 in 
246 °4 
A and D (12.3) 
Boss 
0.016 in 
270.0 
1908.518 
227?75 
127740 
.520 
227.85 
127.92 
•537 
227.70 
127.78 
12037 . 2 2952 rci. (7.5 
..10.5) 
1908.52 
227.73 
1.27.70 
R. A. 22 h 48'" 
28 s Decl. + 27 ° 2V 
No other measures of C and D. 
1911.698 
136-8 
i 7"44 
.720 
136.9 
17-45 
• 736 
136.7 
17-35 
1911.72 
136.8 
17.41 
12021 . 
2 2950. (5.7. 
.7.0) 
Probably fixed. 
R. A. 22 h 46 
m 40 s Decl.+ 61 0 3' 
A and C (10.6) 
12038 . 02 (App.) 238. (6 
.5...7.2) 
1910.720 
354-23 
39 "o 3 
•739 
353-83 
39.17 
R. A. 22 h 48™ 
28 s Decl. + 67° 21' 
.742 
354-58 
39 • 12 
1910.815 
280^63 
6 g':o 6 
1910.73 
354-21 
39 -11 
.818 
280.80 
68.95 
.838 
280.88 
68.96 
for the proper motion of AB. 
Bossert 
o"n6 in 
69? 8 
1910.82 
280.77 
68.99 
A. G. Hels. 0.115 in 
71.2 
Unchanged since 1875. 
A third star 
should be connected. 
Boss 
0.119 in 
69-3 
The principal star is given 
a small proper motion. 
Auwers 
0.117 in 
71.6 
Schroeter 
o"o7o in 
T04?o 
12042 . 2 2955 rej. (7.7 
••II.1) 
12031 . 
Ho 191. (8... 
11.7) 
R. A. 22“ 48" 
41 s Decl. + 6° 37' 
R. A. 22" 47 
m 53 s Decl. + 30° 7 ' 
1908.537 
337°7 
22"86 
A and B 
• 556 
337-8 
22.95 
• 559 
337-5 
23.04 
I 907 - 73 I 
9 i °7 
3 -'i 4 
• 750 
87.9 
3-17 
1908.55 
337-7 
22.95 
1907.74 
89.8 
3-15 
Change doubtful. 
294 
