Burnham: Measures of Proper Motion Stars 
DM (35°) 4013 (8.0...io.3) 
R. A. 20 h 6 m 2/" Decl.+ 35° 46' 
1909-515 
•531 
io9?8o 
109.90 
53"35 
53 -o 6 
1909.52 
109.85 
53-20 
other measures are 
discordant in 
distance 
1878.90 uo?o8 
53-94 
in 
1879.40 109.95 
52.56 
in 
DM (38°) 3957 (8.2. 
..7.2) 
R. A. 2o h 
9™ 2 s Decl. + 38° 22' 
A and B 
1909-493 
354 ° 8 o 
i 3 i '-92 
• 5 i 5 
355-07 
132.40 
•531 
355-15 
132.13 
1909- 5 i 
355-01 
132.15 
A and C (9.3) 
I 909-493 
io6!o7 
I 55"50 
•515 
106.10 
155-73 
• 531 
106.10 
155-91 
1909-51 
106.09 
155-71 
B 1 
B 1 
The primary is a red star; the other is DM (38°) 3956. For 
these stars we have the following positions: 
1879-15 355-24 I32"65 2n B 1 
1881 354-8 133-0 A. G. Lund. 
There is an obvious error in one of the former distances of 
the small star: 
1878.90 io6?02 i56"99 in B 1 
1879.40 106.52 155-92 in B 1 
A and C (10.0) 
1908.266 
22 ?73 
222"6o 
.383 
23.08 
223.09 
.403 
23.22 
222.82 
1908.35 
23.01 
222.84 
A and a (12.2) 
1908.266 
341-32 
38 > 
.383 
34 I -83 
38.93 
• 403 
341.18 
38.91 
1908.35 
341-44 
38.85 
B and D (10.6) 
1908.422 
I20?20 
2 I 7 -I 5 
.425 
120.25 
217.22 
1908.42 
120.22 
217.18 
The proper motion of the principal star is given from me- 
i ridian observations: 
Auwers 
o"io6 
in 
n?8 
Porter 
0.106 
in 
33-9 
Boss 
0.094 
in 
43-8 
B is Bradley 2599 with a small proper motion: 
Auwers o"o44 in 334? 2 
For comparison we have the following with the micrometer: 
A and B 
1887.82 
I 53°°7 
2 I2"o4 
in 
Eng 
1908.35 
153-27 
212.45 
3 n 
P 
A and C 
1887.82 
23?40 
225"16 
in 
Eng 
1894.84 
23.22 
225.00 
in 
Eng 
1908.35 
23.01 
222.84 
3 n 
P 
B and D 
1894.85 
I20?42 
2 i 6"54 
in 
Eng 
1908.42 
120.22 
217.18 
2 n 
P 
DM (36°) 3956 (8.0...9.8) 
R. A. 20 h io m 2 s Decl. + 36° 18' 
1909.493 H7°87 113" 12 
.496 117.80 H3-74 
• 4 i 5 H 7-73 II 4 -Q 3 
1909.47 117.80 113-63 
This star is 8 's of 29 Cygni. It appears to have no sensible 
proper motion. 
1878.16 ii7?69 113^63 2n B 1 
The measures of AB show no sensible change. A mean of 
the first two positions of AC compared with the last gives for 
the apparent movement of A: 
0" 148 in 50?6 
It is not likely that a star of this magnitude has any sensible 
motion, and the larger value may be due to errors in the 
measures. The early positions are all derived from single 
nights, and therefore subject to some question. All these stars 
should be re-measured after a suitable interval. There are 
many stars in the field; I have measured one of the nearest to A. 
29 Cygni (5.0...7.0) 
R. A. 2o h I0 m 2 s Decl. + 36° 26' 
A and B 
1908.266 
I 53°05 
2I2"50 
•383 
153-52 
212.51 
.403 
153-25 
212.35 
1908.35 
153-27 
212.45 
Groombridge 3127 ( 8 . 0 ... 9 . 5 ) 
R. A. 2o h i3 m 28 s Decl. + 49 0 55' 
A and B 
1908.370 92?03 57"24 
.383 91-68 57.23 
.482 91.77 57.07 
.518 92.02 57.12 
1908.44 91.88 57.16 
62 
