Burnham: Measures of Proper Motion Stars 
The first measures arc too discordant in distance to be used 
for proper motion: 
1879.30 274!3 256M5 in 3 3 
1879.34 274.3 257.74 m p 
Comparing the last, which seems to be entitled to the largest 
weight, with the recent position, we have for the proper motion 
of P Her cults: 
Measures 
o"o86 
in 254?o 
Auwers 
0.110 
in 266.4 
N ewcomb 
0.109 
in 256.9 
Boss 
0.107 
in 257.1 
12 Ophiuchi (6. 
0.. .13.7) 
R. A. i6 h 30 m 
3 s Decl. —2° 4' 
1909.381 
244!80 
ioo"34 
10.414 
245-67 
100.42 
10.436 
245.20 
100.04 
1910.08 
245.22 
100.27 
No other measures. The proper motion of 12 Ophiuchi is i 
given in the catalogues: 
Auwers 
o"490 
in 
129? 1 
Porter 
0.527 
in 
128.0 
Paris 
0-539 
in 
128.3 
Boss 
0.546 
in 
125.6 
SD (2°) 4230 (7.0. ..12.5) 
R. A. 16” 34 m 52 s Decl. — 2° 37' 
1909.378 
62? 18 
9 i" 5 o 
.381 
61.45 
91.84 
.400 
61.64 
91.36 
1909.39 
61.76 
91-57 
No other measures. The proper motion of the principal star 
is given from meridian observations: 
Porter 
o"432 in 
i88?6 
Paris 
0.481 in 
180.0 
Bradley 2134 (7.5 
...9.0) 
R. A. i6 h 40 ra 
51 s Decl.+ 2° 28' 
A and B 
1909.227 
2 i 9?04 
150"10 
.304 
219-38 
150.33 
.378 
219.52 
150.02 
1909.30 
219.31 
150.15 
These stars 
are DM (2 0 ) 3174 and 
3173. We have the fol- 
lowing from meridian and micrometer positions: 
1880.8 
220?0 
148" 1 
A. G. Alb. 
1887.51 
219.67 
150.48 
2n 
Eng 
1894.51 
219.62 
150.35 
2n 
Eng 
I 894-5 
219. I 
149.8 
Porter 
The proper motion from meridian positions appears to be too 
large unless the smaller star has some motion of its own. For 
determining this hereafter, I have connected a very faint star 
with C. 
B and C (12.5) 
1909.227 173?18 76V07 
.304 172.80 75.96 
.378 172.83 _ 75-51 
1909.30 172.94 75-85 
A comparison of a mean of the two positions by Engelhardt 
with the present measures of AB gives for the proper motion 
of the principal star : 
o"o50 in 292!6 
The proper motion of the principal star is given from the 
star catalogues: 
Auwers 
o"i67 
in 
291 ?o 
A. G. Alb. 
0.128 
in 
290.1 
Porter 
0.081 
in 
280.7 
45 Herculis (5.3... 10 .5) 
R. A. i6 h 4i m 52 s Decl. + 5 0 28' 
1911.395 83?98 I22?67 
.411 83.87 122.59 
.414 83.90 122.85 
1911.41 83.92 122.70 
No other measures. The proper motion is apparently small. 
Auwers o''o75 in 234?3 
Boss 0.051 in 208.0 
DM (4°) 3265 (8.3...8.3) 
R. A. i6 h 44 m 7 s Decl. + 4 0 56' 
I 9 H -395 353°8o 52"44 
.411 353-66 52.53 
.414 353-20 52.36 
1911-41 353-55 52.44 
B is DM (4 0 ) 3264 (9.0). No other measures. From me¬ 
ridian positions: 
1879 352?9 52"3 A. G. Alb. 
30 Ophiuchi ( 5 - 0 ... 9 . 8 ) 
R. A. 16" 54 m 44 s Decl. — 4 0 2' 
1907.258 
6 9 °6 5 
92"74 
-331 
69.03 
92.63 
-351 
68.92 
92.69 
1907-31 
69.20 
92.69 
The prior measures are: 
1887.51 
69?8o 
91 "82 
2n 
1894.48 
69-63 
92.52 
2n 
1907.31 
69.20 
92.69 
3 n 
Eng 
Eng 
P 
50 
