Burnham: Measures of Proper Motion Stars 
The early distances by H and 02 , each on a single night, 
appear to have considerable errors. The four positions (1881- 
1911) give for the proper motion of A: 
o"o49 in 356?4 
When further measures are made after a suitable interval, 
the single measure of 1881 should be rejected as the distance is 
doubtless too small. 
6263 . 2 1678. (6.3...7-o) 
R. A. I2 h 39 m 26 s Decl. + 15° 2' 
1912.236 19U85 32"68 
.255 191.88 32.53 
.258 191-50 32.40 
1912.25 I9I-74 32-54 
6237 . 
II 2617. (7.9.. 
.10.3) 
R. A. I2 h 
34 m 5 i s Decl.+ 40° 47' 
1907.217 
3°8 
5 ”23 
7.271 
5-8 
5-34 
8.039 
7-8 
5 - 5 i 
1907.51 5-8 5-36 
No early measures. 
6239 . 2 1669. (6.5...6.5) 
R. A. i2 h 35 m 3 s Decl. — 12 0 21' 
A and C (10.3) 
1911 
.302 
233°93 
59-33 
• 356 
233-77 
59-39 
• 373 
233-93 
59-45 
1911 
•34 
233.88 
59-39 
For the proper motion of AB. C is SD (12 0 ) 3675. 
The relative motion in AB is very small, and these stars 
probably form a system of the 61 Cygni class. The proper 
motions are given by Boss: 
A o'.'i29 in 269^6 
B 0.117 in 271.0 
6242 . 27 Virginis. H VI. 81. (6.5...9.2) 
R. A. 12" 35 m 32 s Decl. + n° 5' 
1910.280 
281!8o 
84"33 
• 299 
281.92 
84.63 
.318 
281.70 
84.30 
-320 
281.55 
84:41 
1910.30 
281.74 
84.42 
Probably a system of the 61 Cygni class. (See General Cata¬ 
logue, Part II.) Unfortunately there is no third star available 
for measurement. The proper motions of A and B are still 
uncertain. The latest by Boss is: 
A o"o25 in 38?3 
B 0.020 in 287.8 
6267 . 02 255 rej. (7.0... 12.0) 
R. A. I2 h 40"’ 8 s Decl. + 3 0 7' 
1907.006 
340 ° 3 
i 8"75 
. 120 
339-5 
19.29 
•173 
339-6 
18.89 
1907.10 
339-8 
18.98 
Some change in the angle. 
6268 . 2 1679. (8.5...9.0) 
R. A. 12" 40™ 28 s Decl. + 50° 29' 
1908.060 
.118 
. 192 
A and B 
207 ?4 
207.5 
208.3 
5 ”70 
5-6o 
5-76 
1908.12 
207.7 
5-69 
A and C (12.4) 
1908.192 
39 ° 10 
69"89 
-249 
38.75 
69.47 
.266 
39.02 
69.65 
1908.24 
38.96 
69.67 
The two p measures give nearly the same proper motion of 
A as that in the catalogues, but a longer time interval is neces¬ 
sary for a final correction to the meridian value. 
Auwers 
o"i55 
in 271?1 
Bossert 
0.162 
in 266.5 
Boss 
0.114 
in 269.0 
6259 . 2 
1675. (8.3...9-o) 
R. A. 12"38™ 
40 s Decl. + 35 0 4' 
1908.192 
7-2 
3o"39 
8.249 
7-3 
30.49 
9.071 
7.0 
30-47 
1908.50 
7.2 
30.45 
No change in AB. The third star is measured for the first 
time to determine hereafter the proper motion of A. 
A. G. Harv. o'.'o83 in 90° 
6269 . A. G. 181. (9.4...9.6) 
R. A. 12" 41™ 28 s Decl. + 34 0 36' 
1908.000 340?5 1 "93 
■ 079 335-5 1-69 
.249 340.3 1.51 
1908.11 338.8 1.71 
The wrong star was examined in 1904. 
No other measures. 
Very little change, if any. 
185 
