Burnham: Measures of Proper Motion Stars 
This appears to have been measured from some other part 
of the nebula: 
1890.76 340? 5 6 "73 in Kobold. 
9531 . x Aquilae. 02 380. (7.0...7.2) 
R. A. I9 h 36'" 55 s Decl. + 11 0 33 ' 
AB and C (13.0) 
1912.430 48?53 81"41 
.465 47.98 81.63 
.487 48.27 81.92 
1912.46 
48.29 
81.65 
For the proper motion 
of the close 
pair. This does 
appear from the meridian positions: 
Auwers 
o"o3i in 
302? 7 
Boss 
0.013 in 
180.0 
9560 . 16 Cygni. 
2 46, App. I. 
(5 -1 -•- 5 - 3 ) 
R. A. i9 h 38™ 38 s Decl. + 50° 15' 
1909.438 
134-90 
38"52 
•455 
134-95 
38.16 
.458 
134-78 
38.51 
1909.45 
134-88 
38.40 
The large stars have nearly the same proper 
motion, and 
make a system of the 61 Cygni class. 
A Auwers 
o"228 
in 229?2 
Paris 
0.263 
in 228.8 
Porter 
0.222 
in 227.9 
B Auwers 
0.199 
in 220.2 
A. G. Harv. 0.161 
in 228.5 
h 2050 and star 9.5 
m 
1909.458 
I 94 ?o 8 
96" 11 
.476 
194.09 
95-65 
• 493 
194-18 
96.31 
1909.48 
194.12 
96.02 
This is 2 m 55 s directly following 16 Cygni. The 
prior meas- 
ures are: 
1876.90 i94?5 
97'-'9 
2n 
Wn 
1887.79 195.1 
96.8 
in 
Eng 
1891.75 194-2 
96.16 
2n 
P 
9582 . 0 
2 384. (7.0. 
•- 7 - 3 ) 
R. A. 19" 39 m 32 s Decl. + 38° 2' 
A 
and C (9.4) 
1909.496 
297 ?o 
5 S :'94 
•512 
297-5 
59-31 
• 5 i 5 
296.9 
59.46 
1909.51 
297.1 
59-24 
The only other measure 
is: 
1856.83 298?! 
5 S '.'50 
in 
Se. 
9601 . 
Da 13. (7-2.. 
.11.4) 
R. A. 19" 
40 m 58 s Decl. + 44 0 38' 
A and C (10.7) 
1909.340 
289?58 
I 53"45 
• 342 
289-55 
153-07 
.381 
289.70 
153.56 
I 909-35 
289.61 
I 53-36 
Near 8 Cygni. The other measures are: 
1877.85 289?75 i 53'-39 in B 1 
I 879-37 289.82 152.39 in Bl. 
9607 . 22578. (6.6...7.4) 
R. A. i9 h 4i m 15 s Decl.+ 35° 48' 
A and C (12.0) 
1908.463 
357°53 
45-45 
• 479 
357 - 6 o 
45-42 
.482 
357-87 
45.61 
1908.47 
357-67 
45-49 
The only other measures are those given in the General 
Catalogue by Glasenapp. 
A 
1908.463 
•479 
.482 
and D (9.5) 
25G28 
251.20 
251-30 
H 3"35 
143-35 
143-26 
1908.47 
251.26 
143-32 
Of this we have: 
1880.10 251?32 
i 42"85 
211 Bl 
The apparent change in the distances of both stars requires 
confirmation. 
There is a 14 m star near C, 75?o: n"6. 
9617 . 17 Cygni. 2 2580. 
( 5 -I---8.1) 
R. A. 19 11 4i m 
52 s Decl. + 33 0 27' 
A and C (9.0) 
1908.266 
I 39°55 
I 4 i" 4 i 
.288 
139-88 
141.47 
• 331 
139-63 
141.20 
1908.29 
139-69 
141.36 
A and B make 2 2580, and appear to 
form a system of the 
61 Cygni type. There are 
many stars 
in the field. 
We have 
the following measures of AC: 
1852.71 I45°48 
16O68 
3 n 
02 
1859-63 144-93 
159.01 
in 
02 
1883.48 142.75 
150.11 
in 
H 2 
1887.81 142.08 
148.81 
2n 
Eng 
1908.29 139.69 
141.36 
3 n 
P 
From these positions the proper motion of 17 Cygni is: 
o"456 in 179?7 
249 
