Burnham: Measures of Proper Motion Stars 
20 Monocerotis (5.8...12.9) 
R. A. 7 h 4 m i6 s Decl. — 4 0 4' 
A and B 
1909.838 
09-936 
10.093 
239-23 
237.72 
238.50 
55 "o 2 
54-45 
54-51 
1909.96 
238.48 
54-66 
A 
and C (10.7) 
1909.838 
339-40 
185 "99 
09-936 
339-00 
186.21 
10.093 
339-05 
186.31 
1909.96 
339-15 
186.17 
C 
and D (12.2) 
1909.936 
I26?o5 
85-47 
10.093 
126.05 
85.64 
1910.01 
126.05 
85-55 
The proper motion of 20 Monocerotis is given: 
Auwers 
o"207 in 
358 °S 
Paris 
0.209 in 
360.0 
Porter 
0.224 in 
355-0 
Boss 
0.217 in 
360.0 
The following are the prior measures 
of AC: 
1886.23 339-62 I9o"56 
2n 
Eng 
1894.27 339-60 189.29 
2n 
Eng 
A mean of these compared with the present 
position gives 
for the proper motion of the large star: 
0T205 in 361?3 
As a further check on the relative motion, I have measured 
a small star from each. 
22 Monocerotis (4.2... 13.7) 
The other measures are : 
1886.20 
io7?65 
I27"52 
2n 
Eng 
1894.24 
107.70 
127-54 
211 
Eng 
1907.82 
107.81 
127-43 
3 n 
P 
It is a little strange that the distant small star should have 
exactly the same proper motion as the large star, if that motion 
is real as shown by meridian observations: 
Auwers o"i03 in 3i2?6 
Boss 0.016 in 184.9 
To show this, I have connected each with a fainter star in the 
field. It is very probable that A and B have no sensible motion. 
A and a (11.6) 
1907.845 
.848 
-86s 
i 7°93 
17-55 
16.87 
49 " 12 
49-23 
48.67 
1907.85 
17-45 
49.01 
B and b (11.0) 
1907.845 
I 92?75 
93 " 1 5 
.848 
192.42 
93-54 
-865 
192.77 
93-50 
1907.85 
192.65 
93-40 
Oxford (Z 26°) 20428 
(8.2) 
R. A. 7 h 7 m 49^15 Decl. + 25 0 io'58"7 
This is identical with the 8.3 m star, 
DM (25 0 ) 1613. 
The 
place given here for 1900 is from an Oxford astrographic 
plate 
taken 1908.08. Compared with a prior plate, the proper motion 
o" 368 in 255^7 
A and B (11.9) 
1910.760 i56?2i 
5 o" 6 s 
.780 I 55-96 
50.16 
•856 155-63 
50.03 
1910.80 155.93 
50.28 
R. A. 7 h 5 m 
44” Decl. - 
1 
0 
O 
t—< 
CO 
A and DM (25 0 ) 16x2 (9.4) 
1910.780 
10.933 
I 70?4 
169.7 
31:83 
32.12 
1910.85 249?23 227"4i 
1855. 252. 252. 
11.142 
170.3 
32.09 
The last star is not in A. G. 
1910.95 
170.1 
32.01 
The faint companion first noted by Jonckheere. No other 
measures. The proper motion of the large star, if any, is small: 
44 Camelopardalis ( 7 - 5 - 
..ii.i) 
Auwers 
o"o 34 ir > 
322? X 
R. A. 7" 8 m 14 3 Decl. + 59 0 8' 
Boss 
o.oit in 
344-8 
1910.148 7?45 
i68"9I 
.164 7.64 
169.22 
.203 7.32 
168.76 
Bradley 
1048 (7.3.. 
.10.8) 
1910.17 7-47 
168.96 
R. A. 7 " 7“ 
7 s Decl. + 24 0 55' 
Change in angle from proper motion. 
A and B 
1878.52 6?28 i68"85 
211 
1907.807 
I07?7o 
127"62 
The proper motion of A is small: 
• 845 
107.88 
127.07 
Auwers o"o82 in 
248? 6 
.848 
107.85 
127.61 
Groombridge 0.033 in 
254-4 
2 7 
