Burnham: Measures of Proper Motion Stars 
1911-334 
.411 
.414 
AB and a (13.0) 
I02?6 
104.3 
102.7 
28'.'oo 
27.50 
27-51 
1911-39 
103.2 
27.67 
C and D (9.7) 
1911.334 
261°02 
I 2 S"oi 
■356 
260.77 
124.74 
•373 
260.75 
125.28 
1911 -35 
260.85 
125.01 
The proper motions are given by Auwers: 
A o"o30 in 270?0 
B 0.223 in 148.5 
9118. 21 Aquilac. H 879. (5.3...12.3) 
R. A. I9 h 7 11 ' 39 s Decl. + 2 0 5' 
1912.526 
286?35 
36"39 
•545 
287.03 
36.21 
.562 
287.55 
36.36 
1912.54 
286.98 
36.32 
The proper motion of 21 Aquilae, if 
certain from the meridian positions: 
any, is small and un- 
Auwers o!'oi8 in 
3 o 6?3 
Newcomb 0.003 hi 
327.2 
Boss 
0.007 in 
206.6 
The only other measures of B are my own. These measures, 
continued for the proper time, will give 
the real movement of 
the large star. 
9123. 
22483. (7.2.. 
.8.3) 
R. A. i9 h 
7 m 44 s Decl. + 30° 9' 
A and B 
1907 -523 
3 i 8?4 
9 "67 
7-542 
317.6 
9.96 
8.249 
317-5 
9-93 
1907.77 
317-8 
9-85 
A and C (8.5) 
I 907-523 
236?5 
7 o" 8 3 
7-542 
236.5 
71-45 
8.249 
236.5 
70.69 
1907.77 
236.5 
70.99 
No material change in either. 
9135. 
H 1377 - ( 7 - 0 .. 
.12.9) 
R. A. 19" 
8 m 5i s Dccl.+ 47° 10' 
1912.411 
356?2 
36"50 
■ 427 
356.8 
36.03 
•430 
357-3 
36.03 
1912.42 
356.8 
36.19 
The prior measures are too recent to show whether or not 
the small proper motion given in the General Catalogue belongs 
to the companion. 
9137. Cygni 6. 22486. (6.0...6.5) 
R. A. 19" 9 m o s Decl. + 49 0 37' 
A and C (12.7) 
1910.436 
-452 
.471 
6?6o 
7.00 
7.40 
55 " 9 i 
55-82 
55-83 
1910.45 
7.00 
55-85 
A and D (10.8) 
1910.436 
84° 75 
I 72"59 
•452 
84.67 
173.07 
• 471 
84.87 
173-41 
•473 
84.65 
173-45 
1910.46 
84-73 
173-13 
For the proper motion of AB. The stars AB appear to make 
a system of the 61 Cygni class. An earlier measure of AD is: 
1881.52 78?3i i7o"69 37n Bl. 
From the two measures of this star we have for the proper 
motion of A: 
0*671 in 344?3 
As the first position is the mean of a large number of 
measures, the resulting movement, with a thirty-year interval, 
should have the highest degree of accuracy. 
Other values from meridian observations are: 
Porter 
o"6 5 8 
in 
34 i °9 
Paris 
0.602 
in 
342-0 
Groombridge 
0.644 
in 
344-6 
Boss 
0.654 
in 
343-1 
This star is frequently erroneously called 6 Cygni, which is 
No. 9374 of the General Catalogue. 
9144. 4 Lyrae. 22487. (4.0...8.1) 
R. A. I9 h 9 m 40 s Decl. + 38° 56' 
A and C (10.6) 
1909.340 15O18 i6i"53 
.342 151-32 161.59 
.378 151-28 161.28 
I909-35 151-26 161.47 
The only other measure is : 
1880.00 15O78 i6i"c>9 in Bl. 
No sensible change in AB. If the large star has any proper 
motion at all, it is wholly uncertain. 
Auwers 
0"O2O 
in 
299 -7 
Groombridge 
0.006 
in 
108.9 
Boss 
0.003 
in 
270.0 
9149. 02 (App. 
) 178. 
( 5 - 
5 --- 7 - 5 ) 
R. A. 19” 9 m 52 s 
Decl. + 
14 ° 53 ' 
1911.583 267°. 20 8g".gi 
.602 267.75 89.75 
.622 267.60 89.60 
1911.60 267.52 89.75 
No change since 1875, and the stars have a common proper 
motion if any. 
Boss o"o2Q in I7i?7 
241 
