Burnham: Measures of Proper Motion Stars 
53 Ophiuchi. 
2 34, App. I. 
(5-6 
R. A. I7 h 28 m 
55 s Decl. + 
9° 
40' 
A and B 
1912.542 
190^60 
4i 
'■'2 7 
•545 
190.80 
4i 
.18 
.562 
190.90 
4i 
.40 
1912.55 
190.77 
41 
.28 
No material change since 1835. The proper motion of 
53 Ophiuchi is uncertain, and I have, therefore, connected two 
small stars. 
A 
and C (10.6) 
1912.526 
344-70 
93 ”95 
B 
and D (10.6) 
1912.526 
223^35 
91 "40 
Auwers 
o"o6i in 
255°8 
Boss 
0.017 in 
210.6 
No change since 1833. Common proper motion. This is 
given from meridian observations : 
A (v 2 ) Auwers 
o'.'i 59 
in 
7 i °3 
Boss 
0.165 
in 
72.0 
B (V) Auwers 
0.153 
in 
70.9 
Boss 
0.158 
in 
72.0 
8093 . Sh 251. 
(6.5.. 
• 8 . 5 ) 
R. A. i7 h 33”’ 5 s 
Decl. + 2 0 
6' 
A and C (10.4) 
1912.526 
U °57 
1 32"50 
• 542 
I7-58 
132.46 
•545 
17.27 
132.26 
1912.53 
17-47 
132.41 
The proper motion of the principal star is: 
Boss o"o47 in U2?5 
As there has been no change in AB, this is the movement of 
the other component. This will be more accurately found here¬ 
after from further measures of the faint star. 
8068 . 22185. (7.0...10.0) 
R. A. i7 h 28'" 56 s Decl. + 6° 6 ' 
A and C (7.7) 
1909.455 
207?70 
83"65 
.496 
207.60 
83-75 
•512 
207.58 
84.10 
1909.49 
207.63 
83.83 
For an independent determination of the motion 
connected a 10.5 m star: 
C and D 
1909.455 
182?30 
140-73 
.496 
182.13 
140.68 
•512 
182.43 
140.60 
1909.49 
182.29 
140.67 
A and B have a common proper motion: 
Porter 
o"o7o 
in 
2IO°8 
Furner 
0.062 
in 
216.3 
C has a much larger motion: 
Porter 
o"578 
in 
309-3 
Glasgow 
0.617 
in 
306.0 
Furner 
0.632 
in 
304.7 
8076 . v 1 , v 2 Draconis. 2 35, App. I. (4.6.. .4.6) 
R. A. i7 h 29™ 
48 s Decl. + 55° 16' 
1910.397 
3 ii!88 
6 i ''49 
.414 
312.26 
62.02 
.416 
312.00 
62.09 
•436 
312.35 
61.47 
1910.42 
312.12 
61.77 
8099 . 26 Draconis. (3 962. (5.5..10.1) 
R. A. 17" 33 m 45 s Decl. + 61 0 58' 
1908.518 
•575 
• 597 
351-5 
353-0 
348-5 
1 "06 
1.21 
1.16 
1908.56 
351-0 
1.14 
1910.164 
352! 5 
I "21 
.184 
350-5 
I-13 
•452 
350-3 
1-39 
.471 
352.4 
1.19 
•473 
346.8 
1.29 
1910.34 
350.5 
1.24 
The elements of the orbit are as uncertain now as they were 
twenty years ago, although the described arc is 157 0 . 
The proper motion of the binary system is : 
A. G. Hels. 
o "583 in 
i52?7 
Groombridge 
0.563 in 
155-4 
Porter 
0.569 in 
154-2 
Boss 
0.563 in 
154-5 
8114 . 2 2 
194. (6.2... 
- 8 . 5 ) 
R. A. i7 h 36™ 10 s Decl. + 24 0 34' 
A and DM (24 0 ) 3226 (9.0) 
1909.266 
i6i?42 
163^98 
• 304 
161.20 
164.28 
• 340 
161.28 
163.88 
1909.30 
161.30 
164.05 
From meridian positions: 
1880.4 i6i?3 i 62"9 A. G. Ber. 
A and B appear to have the same proper motion. 
A. G. Ber. o'.'o56 in 345?8 
Boss 0.052 in 340.1 
15 
221 
