Burnham: Measures of Proper Motion Stars 
The micrometer measures give for the proper motion of A: 
i "397 in I 94?7 
Or combined with A. G.: 
i ”399 in 195-2 
From meridian observations: 
Piazzi XVII. 368 ( 7 - 7 - ••lO.o) 
R. A. i8 h i m 7 * Decl. + 8° 52 ' 
A. G. 
1 "270 
in 
I 97 °i 
Porter 
1.296 
in 
196.8 
Schroeter 
1-350 
in 
196.7 
The catalogues find no proper motion in B. 
83 Herculis (5 S...9.4) 
R. A.17“ 
37 m 33” Decl. + 
24° 38 ' 
1909.340 
259?82 
I 57"67 
.342 
259-78 
157-37 
.378 
260.08 
157-57 
1909-35 
259.90 
157-54 
measures 
of this star are as 
follows: 
1886.63 
1894.69 
259-45 
259-57 
159-75 
I59-63 
2n 
2n 
Eng 
Eng 
From these measures we have for the proper motion of 83 
Herculis: 
o''129 in 233?o 
From meridian positions: 
Auwers 
o?i 3 4 
in 
2 l8?I 
Porter 
0.124 
in 
219.0 
Boss 
0.131 
in 
208.6 
DM (20°) 3646 (8.5...9.0) 
R. A. 17 h 57 m 3 s Decl. + 20° 58' 
A and DM (20°) 3647 
1912.353 
.389 
.408 
154-43 
I 54-63 
154-50 
145"06 
145-75 
145.89 
1912.38 
154-52 
145-57 
A and star 9.0 m 
1912.353 
284?23 
i 44'-94 
• 389 
284.05 
145-05 
.408 
284.00 
145-23 
1912.38 
284.09 
145-07 
In consequence of an error in plotting these stars on the DM 
maps, it was supposed that there had been considerable change 
in the relative position, but this is not confirmed. From 
meridian observations we have for AB: 
1865 154 ?7 I46"4 Bruxelles 
1875 154-3 144-9 A. G. Ber. 
1908.192 
240?13 
130"98 
-249 
240.13 
130.68 
•252 
240.03 
131.24 
• 331 
240.13 
131-47 
1908.26 240.10 
These are all the measures: 
1893.66 239?6o I32"i9 
1908.26 
240.10 
131-09 
131-09 
3 n 
4 n 
Eng 
P 
The former proper motion appears to be too large: 
Measures o"io9 in I93?5 
Stumpe 0.165 in 167.5 
Porter 0.157 in 170.2 
To make it certain hereafter that B has no motion, I have 
connected with it a 13 m star: 
1908.444 
.460 
-479 
B and C 
37-43 
37 -80 
37-53 
8 o "37 
80.46 
80.53 
1908.46 
37-59 
80.45 
T Herculis 
R. A. 18” 4 m 34 s 
(Var.. .10.3) 
Decl. + 31 0 o' 
1909.167 
321^07 
67 "08 
.186 
320.88 
66.80 
.227 
321.18 
67.08 
1909.19 
321.04 
66.99 
The principal star is variable. The early measures differ in 
distance; probably unchanged. 
1877.79 
1879.24 
1 321?90 
66" 9 3 
in 
320.78 
68.28 
in 
DM (23°) 3289 (7.5.. 
.10.8) 
R. A. i8 h n m 
31 s Decl.+ 23°2i' 
A and B 
1908.403 
3°38 
I28"9i 
.422 
3-20 
129.08 
• 425 
3.68 
129.30 
1908.42 
3-42 
129.10 
B and C (11.5) 
1908.403 
246?o 
is:'oo 
.422 
246.3 
17.82 
.425 
246.3 
17.82 
1908.42 
246.2 
17.88 
B 1 
B 1 
The only other measures are: . 
1877.72 3?77 I3o"62 
1879.27 3.49 129.19 
in 
in 
B 1 
B 1 
52 
