Burnham: Measures of Proper Motion Stars 
The only other measure is: 
1879.38 291?6 
64"65 
in P 3 
As the comparison star 
is very faint, 
and the first position 
from a single night, no great weight 
can 
be given to this proper 
motion: 
Measures 
o'! 120 
in 
188? 1 
Auwers 
0.155 
in 
205.7 
Newcomb 
0.152 
in 
198.2 
Boss 
0.161 
in 
197.9 
18 Scorpii (5.6 
•••i 3 - 3 ) 
R. A. i6 h 9 m 6 s Decl. - 
- 8 ° 3' 
1910.225 
2i6?4 
23"40 
.260 
215-9 
23.64 
•395 
216.8 
23.61 
1910.29 
216.4 
23-55 
No other observations of the small star. The proper motion 
of 18 Scorpii is given : 
Auwers 
o "540 
in 
162? 1 
Boss 
0.564 
in 
156.2 
15 Herculis (7.5... 
9 - 8 ) 
R. A. i6 h io m 
35 s Decl.+ n° 43' 
A and B 
1907.197 
257?70 
64"89 
.217 
258.00 
64.92 
.258 
257-90 
64.97 
1907.22 
257-87 
64-93 
B and C (11.0) 
1907.258 
i7?8o 
io8"os 
• 293 
17.80 
107.80 
1907.28 
17.80 
107.92 
No other measures of C. 
For AB we have : 
1887.53 259?23 
66" 16 
2n 
Eng 
1894.54 259.37 
65-79 
2n 
Eng 
1907.22 257.87 
64.93 
3 n 
P 
From which the proper 
motion is: 
Measures 
0"104 in 
3io?6 
Auwers 
0.113 in 
294.1 
Boss 
0.058 in 
300.0 
Lalande 29917 (8.6. 
..10.6) 
R. A.i6 h i6 m 
30 3 Decl. + 67° 32' 
1908.118 
I 3°58 
63^42 
.156 
13-50 
63-52 
.192 
13-18 
63-39 
1908.16 
13.42 
63-44 
The proper motion of A is given in the star catalogues: 
Stumpe o" 482 in 283^4 
Porter 0.498 in 281.9 
Schroeter 0.519 in 279.7 
There is no third star near enough for the micrometer. 
1 * Coronae (5.0...12.4) 
R. A. i6 h I7 m 25 s Decl.+ 3i°io' 
1909.340 59?52 185"19 
•342 59-45 185.05 
•378 59-45 185.03 
I 909.35 
59-47 
185.09 
No other measures of the small star. 
, The proper motion of 
§ Coronae is given: 
Auwers 
o"i38 in 
326?3 
Boss 
0.132 in 
3 I 4 -I 
Newcomb 
0.121 in 
326.6 
Lalande 29836 (8.3 
...11. 3) 
R. A.i6 h I7 m 
36 s Decl.— 13 0 21' 
1909.381 
28l?20 
I 03"43 
.458 
280.78 
102.82 
.496 
281.03 
102.65 
1909.44 
281.00 
102.97 
No other measures. The proper motion of the large star is 
given: 
Porter 
o "333 in 
224?6 
Paris 
0.314 in 
220.8 
Anonymous (10.7. 
• . 13 - 3 ) 
R. A. i6 h 20 m 
35 s Decl. + 48° 38' 
A and B 
1911.260 
283?40 
70 " 4 i 
• 337 
283.38 
70.64 
• 375 
283.78 
70.94 
1911-32 
283.52 
70.66 
This small star is given 
a large proper motion by Kapteyn: 
i"23i in in'; 
'2 
No other micrometer position in verification of this motion. 
The nearest A. G. star is sf: 
A and DM (48°) 2399 (8.9) 
1911.29 AR. A.+ H3?i6 
A Decl. — io6"85 
p Herculis ( 3 . 0 . ..IO. 3 ) 
R. A. 16" 25'" 4 s Decl.+ 2i°45' 
It will be seen from the measures, that whatever the proper 
motion of the larger star is, it is sensibly the same for the other. 
1893.67 I 3°35 64"oo 211 Eng 
1908.16 13.42 63.44 3n P 
1909. 
112 
274?60 
255^65 
. 148 
274.40 
255-29 
.164 
274-50 
255.01 
1909. 
.14 
274-50 
255-32 
49 
