Burnham: Measures of Proper Motion Stars 
Comparing these with the recent positions we have the proper 
motion of the large star from the several companions: 
AB 
R. A. + o"o52 
Decl. + 0H59 
AC 
.060 
.127 
AD 
.066 
.097 
+ 0.057 
-f 0.128 
Hence the mean proper motion is: 
0H40 in 24?o 
There is no evidence of any relative change in this group of 
small stars. For a verification of this hereafter, I have con¬ 
nected them directly. 
The proper motion of in Herculis from observations on the 
meridian is given: 
Auwers 
0" 127 
in 
2 I?7 
Newcomb 
0.116 
in 
28.6 
Boss 
0.123 
in 
30.6 
Porter 
0.130 
in 
23.2 
E Aquilae (4.3...10.2) 
R. A. i8 h 54 m 11 s Decl. + 14 0 54' 
A and B 
1909.304 
i86°7o 
i 3 i ?65 
•340 
186.65 
130.80 
.400 
186.85 
131.09 
I 909.35 
186.73 
131-18 
A and C (10.3) 
1909.304 
163?13 
I 48 " 2 5 
• 340 
162.82 
148.10 
.400 
163.38 
147.83 
I 909.35 
163.11 
148.06 
B and C 
1909.400 
ioo?7i 
59"89 
• 455 
100.80 
59-32 
.458 
100.58 
59-44 
1909.44 
100.70 
59-55 
These stars have been measured as follows: 
AB 
1887.59 
iS7°25 
I32"43 
2n 
Eng 
1894.71 
187.35 
132.75 
2n 
Eng 
AC 
1887.58 
163.67 
148.57 
in 
Eng 
From the positions of AB the proper motion of e Aquilae is: 
o"105 in 229?9 
The measures of AC give substantially the same value, but 
as the early position depends on a single observation, it can 
add nothing to the other, and for the present should be re- 
j ected. 
The movement of the large star has been given from 
meridian positions: 
Auwers 
o"i03 
in 
229?4 
Newcomb 
O.IOI 
in 
216.8 
Boss 
0.100 
in 
219.6 
DM (33°) 3295 (7.1...12.6) 
R. A. i8 h 57 m 22 s Decl. -F 33 0 47' 
1911.162 
I 77?8 
25 " 7 i 
.184 
178.8 
25-44 
.200 
178.8 
25.64 
1911.18 
178.5 
25.60 
Faint companion noted by Jonckheere; no other measures. 
No proper motion found in the star catalogues. 
R Aquilae (Var...II.l) 
R. A. i9 h o m 36 s Decl. + 8° 3' 
A and B 
1910.397 
• 452 
• 455 
296^13 
296.12 
296.48 
74"35 
74.42 
74-57 
1910.43 
296.24 
74-45 
A and C (10.8) 
1910.397 
258^85 
iSo"4i 
• 452 
258.83 
180.16 
•455 
259.08 
180.13 
1910.43 
258.92 
180.23 
Change doubtful. 
1878.55 294!73 73-51 2n B 1 
The more distant star is DM (8°) 3968 (9.5). The prior 
measures are uncertain in distance: 
I 877.75 258?78 
X 78:'93 
in 
B 1 
1879.33 258.52 
180.60 
in 
B 1 
Lalande 35851 (5.5.. 
• 9 - 5 ) 
R. A. I9 h 2 m 34 
s Decl. + 16° 40' 
1908.192 
275? o 8 
ii9"62 
.252 
274.88 
119.96 
.288 
275-05 
120.31 
• 331 
274.97 
119.52 
1908.26 
275.00 
119-93 
B is DM (16 0 ) 3751. The 
measures are: 
1893.67 273?22 
H 9-57 
2n 
Eng 
1908.26 275.00 
119-93 
4 n 
P 
The several values of the proper motion are: 
Measures 
o"257 in 
I78?6 
A. G. Berlin 
0.297 in 
I 7 I -4 
Porter 
0.314 in 
165.7 
Paris 
0.337 + 
162.1 
DM (18°) 4011 (6 3-- 
10.9) 
R. A. I9 h io ni 14 s Decl. + 18 0 18' 
1909.496 
i 65?38 
i36"96 
.512 
165.41 
136.60 
•515 
165.30 
136.97 
1909.51 
165.36 
136.84 
55 
