Burnham: Measures of Proper Motion Stars 
A and d (12.6) 
I 9 H -395 
3 58? 2 
57 " 8 5 
.411 
358.6 
57.80 
.468 
358.1 
57.80 
1911.42 
358.3 
57-82 
From the four measures by (3 on ion of AB (1891-1911) the 
proper motion of the principal star is: 
o!' 258 in 72°. g 
Comparing the present measures of the fainter stars with the 
Greenwich photographic measures in 1899 we have: 
Art R. A. + o". 196 Decl. + o"c>92 
A b 0.205 0.107 
+ 0.200 +0.100 
Therefore the approximate proper motion of A is : 
o"223 in 63?4 
From meridian observations: 
A. G. 
Harv. 
o" 226 in 
8+4 
Porter 
(Cin 13 ) 
0.168 in 
56.1 
Porter 
(Cin 14 ) 
0.225 in 
77.2 
11641. 2 2894. (6.0... 
8.2) 
R. A. 22 
h I3 m 40 s 
Decl. + 
37° 10' 
A and 
c (9.6) 
1908.537 
• 573 
I 75°73 
174-47 
221"40 
221.55 
1908.55 
175.10 
221.47 
B and C 
1908.556 
174-37 
206"61 
• 559 
174.24 
206.51 
• 575 
174.62 
206.73 
1908.56 
174.41 
206.62 
For this star we have: 
1880.70 17+00 20+83 2n B 1 
The measures of the small star should be continued. The 
proper motion of A is given: 
Boss o"o92 in 48^6 
11657. IS 2895. (8.5.. .10.0) 
R. A. 22" 15'" 8 s Decl.+ 24°2i' 
A and B 
1912.619 
36 % 
8" 3 8 
.622 
36.0 
8-37 
.638 
36.2 
8.40 
1912.62 
36.3 
8.38 
The proper motion given in Part II of the General Catalogue 
of A will not be sensibly changed by the later measures: 
o"o57 in 247?8 
The distant star measured is the principal component of a 
small pair in the field. The only other position is given in the 
General Catalogue. 
A and C (10.o) 
1912.619 
.622 
.638 
142^20 
142.22 
142.00 
i 2 o "73 
121.18 
120.90 
1912.62 
142.14 
120.94 
11659. 02 469. (7.2. 
..8.8) 
R. A. 22 h 15™ 11 s Decl.+ 34 0 31' 
A and B 
1908.750 
284?77 
29" 5 2 
.769 
284.36 
29.96 
.788 
284.65 
29.89 
.804 
285.30 
29.56 
1908.78 
284.77 
29-73 
From seven positions, on 22 nights (1846-1908) the apparent 
motion of A is : 
o"o47 in I28?4 
To make certain hereafter that the motion is all in the larger 
star, I have connected a third 12.2m star: 
A and C 
1908.750 
5 i °43 
52 "90 
.788 
52.37 
S2.92 
.804 
52.43 
53 . 6 i 
1908.78 
52.08 
53-14 
11663. Y Aquarii. H 3106. 
(3.9...12.2) 
R. A. 22 11 15 
m 27 s Decl. 
— 1 ° 59 ' 
1909.725 
I 33?78 
41 "09 
• 744 
133-37 
41.38 
.760 
132.68 
41.46 
.782 
133.70 
41.66 
1909.75 
I 33+8 
41.40 
From a continuation of these measures, the proper motion of 
Y Aquarii can be found with a high degree of accuracy. 
Measures to 
1901 0" 142 
in 95°7 
Auwers 
0.102 
in 85.0 
A. G. Nico. 
0.103 
in 80.5 
Newcomb 
0.123 
in 82.9 
Boss 
0.123 
in 85.8 
11669. 2 Lacertae. H 1755. 
(4.6...10.8) 
R. A. 22 h 16 
m + Decl.+ 45° 56' 
1912.562 
9 ° 23 
48"oi 
• 564 
8.98 
48.00 
.581 
8.83 
48.12 
1912.57 
9.01 
48.04 
No sensible change in the small star since 1879, which would 
indicate an absence of motion in the bright star. The meridian 
positions leave the question doubtful: 
Auwers 
o'. 
'021 
in 
I 94°8 
Groombridge 
0. 
.025 
in 
182.4 
Boss 
0. 
.020 
in 
90.0 
284 
