Burnham: Measures of Proper Motion Stars 
Oxford (Z 26°) 34278 (10.9) 
R. A. 13" 54 m 49?i2 Decl. + 25 0 43' 40V2 
The place for 1900 is from an Oxford astrographic plate 
taken 1908.34; and this compared with a prior photograph of 
the same region indicates a remarkable proper motion for a 
star of this magnitude: 
o"425 in 256?4 
A and B (10.7) 
1910.280 
58?65 
16RG8 
.282 
58.27 
160.80 
.299 
58.82 
160.81 
1910.29 
58.58 
160.93 
A and DM (25 0 ) 2715 (9.3) 
1910.260 93°52 2S8"94 
.280 93-72 258.48 
1910.27 93.62 258.71 
A comparison of the Oxford and A. G. positions indicates 
considerable proper motion in one or both stars. 
Prof. H. C. Plummer gives the positions of the two com¬ 
parison stars from the last plate: 
1908.34 58? 5 i6o"4I 
1908.34 93.7 256.89 
Oxford (Z 26°) 34290 (10.o) 
R. A. I3 h 55 m I9?95 Decl. + 25 0 48' 44"9 
This star is DM (26°) 2513 (9.5). The place give here is 
for 1900 from an Oxford plate taken 1908.34. Compared 
with a prior plate, the proper motion appears to be: 
o"i49 in 122?5 
There is no good comparison star for the micrometer. 
A and DM (26°) 2517 (8.9) 
1910.28 A R. A. + 76? 2 A Decl. + I09"5 
1875 76.1 105.3 A. G. Camb. 
The complete measures are: 
1887.48 
2i6?67 
154-43 
2n 
Eng 
1894.44 
217.03 
154-92 
2n 
Eng 
1907.30 
217.16 
155-75 
3 n 
P 
From a mean 
of the first two, and the 
last, the proper motion 
of the large star 
is: 
Measures 
o"o 84 in 
75°7 
Auwers 
0.114 in 
95-0 
Boss 
0.114 in 
109.4 
6 Bootis 
( 4 . 4 .. 
.11.0) 
R. A. I4 h 2i m 7 
Deck + 52 0 24' 
1907.140 
i 82?6 
69^07 
.197 
182.0 
69.14 
.214 
182.1 
69.04 
1907.18 
182.2 
69.08 
1910.337 
181.5 
69"34 
•340 
181.5 
69.11 
.356 
181.8 
69.26 
1910.34 
181.6 
69.24 
The only other measures are given in 
tions Vol. X as follows; 
the Pulkowa 
Obscrva- 
1854.64 
i8i?9 
99"o8 
in 
02 
1877.00 
181.9 
98.61 
2n 
02 
1883.47 
182.2 
99 -16 
2n 
El 2 
Evidently there is no relative motion; and apparently each 
of the distances is 30" too large. It is not a printer’s error, as 
the distance of 99" is twice referred to in the introduction to 
Vol. X. The proper motion of the system is: 
Auwers 
o" 4 68 
in 
2 II ?6 
Newcomb 
0.468 
in 
210.2 
Boss 
0.471 
in 
210.4 
There is no third star within reach of the micrometer. 
Lalande 26147 (7.O...II.5) 
R. A. I4 h n m 39 s 
Deck 
-6° 59 ' 
1907.258 
8?7S 
43 ”46 
8.192 
7.80 
44.07 
8.403 
8-45 
44-36 
1907.95 
8-34 
43-96 
Observed at first by mistake for Ho 384. No other measures. 
I do not find that any proper motion has been assigned to the 
principal star. 
18 Bootis (5.6.. 
.10.5) 
R.A. 14" 
I3 m 27 s Deck + 13 0 34' 
1907.271 
217^25 
I 55"82 
.312 
217.08 
155-87 
.329 
217.15 
I 55-56 
1907.30 
217.16 
155-75 
SD (7°)3856 (9.0...9.6) 
R. A. 14” 24 m 35 s Deck —8° 6' 
1907-137 I 5 T °5 5 °" 1 3 
.197 151.3 49-95 
1907.16 151-4 50.04 
The larger star is said to have some proper motion (A. N. 
4125). No other measures. 
a Bootis (4.7...10.0) 
R. A. 14" 29 m 
27 s Deck + 
30° 16' 
A and B 
1907.197 
82? 5 
237 "i 8 
-233 
82.4 
237.06 
1907.21 
82.45 
237-12 
4 
45 
