Burnham: Measures of Proper Motion Stars 
7477. 02 303. (7.4...7.9) 7508. A. G. 202. (9.1...9.2) 
R. A- I5 h 55 m 18 s Decl. +13 0 37' R. A. i6 h 2 m I s Decl. + 47 0 59' 
AB and C (13.0) 
1912.241 ii?67 77"19 
.430 11.27 77.02 
•465 11.55 76.75 
1912.43 11.50 76.99 
No proper motion of the binary found in the catalogues re¬ 
ferred to. No other measures of C. 
7480. p Coronae Bor. S 676. (5.5...9.6) 
R. A. 15” 56 m 28 s Decl.+ 33° 40' 
1912.236 75758 84786 
•274 75-93 84.71 
•296 75-38 84.48 
1912.27 75.63 84.68 
In the General Catalogue I have given the proper motion of 
p Coronae from the measures 1853 to 1903. This will not be 
sensibly changed by these measures. 
The several results are : 
Measures 
o "795 
in 
I94°8 
Auwers 
0.815 
in 
196.0 
Porter 
0.810 
in 
196.1 
Boss 
0.810 
in 
* 95-3 
7490. 
2 2006. (7.5. 
..9.2) 
R.A. 15” 
58™ I s Decl. + 59° 16' 
A and C (7.7) 
1911.142 
2i7°65 
44^99 
. 162 
218.10 
45-23 
. 184 
2x7.88 
44-85 
1911.16 
217.88 
45.02 
Change in both companions. 
No suitable fourth star for comparison. 
7500. 22007. (6.5...8.0) 
R. A. i6 h o m 27 s Decl. + 13 0 39' 
A and B 
1908.288 325 ?4 34"8o 
• 33 * 324.9 35-09 
•425 325.5 34-65 
1908.35 325.3 34-85 
One of the 2 components has a small proper motion, and it 
is impossible to say which it is. I have, therefore, connected a 
third small star, which is DM (13 0 ) 3066. Remeasuring this 
after a proper interval will show what the fact is. 
A and C (9.8) 
1908.288 I37°68 167788 
•33* 137-40 167.61 
.422 137.70 167.62 
1908.35 137-59 167.70 
1910.280 
283? 5 
22721 
• 299 
284.0 
22.14 
.356 
283.7 
2I.94 
1910.31 
283.7 
22.10 
7514. x Herculis. 2 2010. 
(5.0...6.0) 
R. A. i6 h 2 m 40 s Decl. + 17 0 22' 
A and C (13.3) 
19x2.353 2i3?43 
62^25 
.389 211.72 
63.21 
.411 211.67 
62.74 
1912.38 212.27 
62.73 
The small relative change in AB is probably due to a small 
difference in their proper motions, thus making a system of the 
61 Cygni type. The movement of the principal star is given in 
the star catalogues: 
Auwers o'.'oS8 in 
26278 
Boss 0.047 in 
252.5 
7535. 02 (App.) 143. 
(6.3...8.2) 
R. A. i6 h 5 m 15 s 
Decl. + 70° 35' 
1907.291 
S4°7 
46754 
•329 
84-5 
46.85 
•35i 
83-9 
46.63 
1907.32 
84.4 
46.67 
No relative change. The proper motion of the larger star is 
Groombridge 
o'.'o 43 
in 49?8 
7550. 2 
2019 rej. (8.0. 
•-9-2) 
R. A. 16"7 
m 42 s Decl. — 
>—l 
O 
O 
1910.260 
I52?95 
22754 
.356 
152.38 
22.06 
•395 
152.95 
22.38 
1910.34 
152.76 
22.33 
Probably unchanged. 
7551. 49 Serpentis. 2 2021. (6.7...6.9) 
R. A. i6 h 7 m 42 s Decl. + 13 0 51' 
A and C (10.1) 
1909.381 124760 240714 
.400 124.52 240.43 
.438 124.80 240.34 
1909.41 124.64 240.30 
209 
