Burnham: Measures of Proper Motion Stars 
Groombridge 1697 (6.0...9.0) 
R. A. io h 45 m 16 s Decl. + 70° 30' 
A and B 
1908.022 
.025 
.044 
. 102 
52?oo 
52.12 
52.00 
52.00 
i 74 '' 7 o 
175.15 
T 75.27 
I 75 .I 4 
1908.05 
52.03 
175.06 
B and b (12.8) 
1908.022 
223?17 
59"39 
. 102 
222.90 
59-83 
1908.06 223.03 59.6i 
No other measures of the faint star. We have the following 
of AB for comparison : 
1842 46% 152'? 2 O. Arg. N. 
1894.53 5 I-I 5 170.09 211 Eng 
1908.05 52.03 175-06 4n p 
The direct measures give for the proper motion of A: 
o"4i8 in 259?o 
Or with the meridian position: 
o"4i6 in 263?5 
The first is probably the best, notwithstanding the longer 
interval in the other. 
This, from meridian observations only, has been given : 
Stumpe 
o"4S5 
in 
255°2 
Porter 
0.428 
in 
259.4 
Kustner 
0.423 
in 
260.3 
Groombridge 
0-399 
in 
258.6 
Boss 
0.403 
in 
259.8 
DM (1°) 2495 (6.9...12.7) 
R. A. io h 46 m 4 s Decl. + i° 43' 
1912.255 27i?o8 39"53 
.274 271.40 39.27 
.312 271.13 38.89 
1912.28 271.20 39-23 
In the first instance this was taken for 55 Leonis. I do not 
find any proper motion assigned to the large star from meridian 
positions. 
Groombridge 1745 and 1744 (7.2...8.5) 
R. A. n h 5 m 9* Decl. + 43 0 29' 
1908.025 
• 057 
.118 
A and B 
247?18 
247.08 
247.30 
I 35 " 2 i 
I 35.32 
I 34.96 
1908.07 
247.19 
135-16 
B and b (12.5) 
1908.159 
336?38 
132"64 
.266 
335-92 
132.29 
1908.21 
336.15 
132-46 
That the large stars have the same proper motion will be 
apparent from the following positions: 
1810 
246° 4 
I 34"2 
Groombridge 
1893.36 
247.27 
134-95 
2n Eng 
1895.29 
247.2 
13506 
Donner 
1908.07 
247.19 
I35.i6 
3 n P 
I have therefore measured a third 
star. The proper motions 
are given: 
A = o"285 
in 209?2 
Groombridge 
0.279 
in 214.2 
Porter 
B = 0.276 
in 212.4 
Groombridge 
0.284 
in 212.4 
Porter 
Oxford (Z 26 °) 30038 (10.9) 
R. A. n h n m i3?4i Decl. + 27 0 o' 23"6 
The place for 1900 is from a plate taken 1908.25, which, com¬ 
pared with an earlier exposure, gives a proper motion of: 
o'.'i20 in 3ii?8 
There is no near star for direct comparison with the 
micrometer. 
A and DM (27 0 ) 2000 (8.3) 
1911.14 A R. A.—'73? 7 A Decl. — 42"o P 
1900 73.6 41.6 Ox.—A. G. 
Anon (9.7...9.7) 
R. A. 11" 22 m 18 3 Decl. + 8° 19' 
The large proper motion of this faint star was detected by 
Dr. Max Wolf (A. N. 4101) by the change shown on photo¬ 
graphic plates made in 1892 and 1906. My early measures have 
been previously given (Mon. Not. LXVIII, 521) and compared 
with rough places obtained by measuring photographic paper 
prints. 
The micrometrical measures are: 
1906.906 
A and B 
252? 1 
81'.'63 
7.006 
252.0 
81.68 
7.102 
252.1 
81.42 
7.120 
252.2 
8 i .44 
1908.118 
253-23 
80.92 
.156 
253-10 
81.11 
• 159 
253.08 
80.68 
. 192 
253.00 
80.82 
1909.071 
253-87 
80.13 
.112 
253.63 
80.50 
. I48 
253-80 
80.24 
. 164 
253-94 
80.15 
1910.09I 
254.78 
80.05 
■093 
254-35 
79.87 
. 107 
254 . 5 I 
7984 
1910.931 
255.28 
79.02 
II .107 
255-21 
79.08 
II.164 
255-50 
79.09 
39 
