Burnham: Measures of Proper Motion Stars 
AB and D (13.0) 
1908.556 
i6o?97 
5 °” °8 
• 573 
160.60 
50.22 
1908.56 
160.78 
50.15 
No other measures of these faint stars. 
The proper motion of the close pair is given: 
Bossert 
o"i96 in 
I24?2 
Porter 
0.075 in 
180.O 
Paris 
O.134 in 
I44.4 
Kustner 
0.081 in 
180.O 
AB 
and E (10.9) 
T908.520 
9-07 
82"76 
.556 
9.04 
83.06 
• 559 
8.87 
82.67 
• 573 
9.20 
83-15 
1908.55 
9.04 
82.91 
The measures of the three small stars should be continued 
10881. 
P 271. (7.2. 
•- 9 - 7 ) 
R.A. 21"12 
m 49 s Decl. 
— 26° 
5 i' 
A and B 
1908.671 
243°8 
3 ': 
'33 
10.742 
244.0 
3 - 
37 
10.760 
243-9 
3 - 
72 
1910.04 243.9 3.47 
A system of the 61 Cygni type, with large proper motion. 
This is shown in the measures of the faint star, C: 
A and C (12.0) 
1908.671 
72! 13 
80" 94 
10.760 
72.20 
82.40 
The prior measures are: 
1898.84 74?2 
74"57 
in 
0 
1899.75 72.9 
75-45 
4 n 
Bar 
The measures of C should be continued. The proper motion 
of AB from meridian positions is: 
Porter o"693 in 245?3 
Paris 0.676 in 239.1 
10885. v Cygni. 02 433. (4.6...10.2) 
R. A. 21 11 
1912.675 
.678 
.698 
I2 m 59 s Decl. 
A and B 
2 i 9?3 
219.0 
219.7 
+ 34 ° 24' 
I 4"84 
14.76 
14.94 
1912.68 
219.3 
14-85 
A and C (10.2) 
1912.675 
i8i?6 
2l"l6 
.678 
179-7 
21.39 
.698 
180.0 
21.45 
1912.68 
180.4 
21.33 
The measures of the two small stars (1849-1912) show 
clearly that the proper motion of v Cygni is very small and 
doubtful. A long time-base is required, even in observations 
with the micrometer. The results given in the star catalogues 
are uncertain and inconsistent: 
Auwers o''007 in 237? 1 
Boss 0.029 in 136.7 
10898. 0 1140. (6.7...12.3) 
R. A. 2i h 14™ I s Decl. + 58° 6' 
A and C (12.9) 
1912.353 
270°70 
69"79 
.408 
270.83 
69.99 
.411 
270.34 
69.85 
1912.39 
270.62 
69.88 
No other measures of C. No proper motion of the large 
star found in Groombridge, Bradley, Boss, etc. No relative 
change in AB. 
10913. H 934. 
R. A. 2i h i5 m 14 s Decl. — 9° 17' 
H 934 not identified; faint pairs in the vicinity, but none 
answering the description fully. About 2 m directly preceding 
the supposed place of H 934 is h 2113. This is a little brighter 
in the center. 
h 2113 and SD (9 0 ) 5711 
( 9 - 3 ) 
I 909 - 53 I 
279-1 
137-26 
• 534 
279-3 
137-47 
I 909-53 
279.2 
I 37-36 
The comparison star has 
a small 
companion n.8m, and is 
the double referred to by Herschel in his note on the nebula. 
I 909 - 53 I 
63° 1 
25"58 
•534 
62.9 
25.28 
I 909-53 
63-0 
25-43 
10917. 
E 
to 
00 
*-l 
00 
G 
•- 9 - 2 ) 
R. A. 2i h 15 
m 32 s Decl. + 16 0 14' 
1908.597 
335-48 
14'Tl 
• 633 
335-50 
14.02 
.636 
334-70 
13.90 
1908.62 
335-23 
14.01 
1911.392 
335-4 
I 3 " 8 9 
•449 
335-1 
14.01 
.468 
334-6 
13-94 
1911.44 
335-0 
13-95 
The apparent change shown by Herschel’s measures of 1829 
is due to errors of observation. 
272 
