Burnham: Measures of Proper Motion Stars 
This is given from meridian positions: 
Groombridge 
oi'124 in 
i88?8 
Auwers 
0.158 in 
214.5 
Porter 
0.145 in 
204.6 
Paris 
0.131 in 
180.0 
Newcomb 
0.150 in 
202.4 
Boss 
0.136 in 
187.5 
Oxford (Z 26°) 19211 
(12.4) 
R. A. 6 h 45 m 47’6 
Decl. + 
25 0 4' 4"2 
This place for 1900 is from an Oxford astrographic plate 
taken 1908 
.08. From a comparison of this with an earlier plate, 
the proper 
motion is given: 
0"205 
in 201?o 
A and B 
(10.5...12.0) 
1910.760 
io7?36 
59"99 
■ 777 
107.72 
60.08 
.780 
107.28 
60.51 
1910.77 
107.45 
60.19 
A and DM (25 0 ) i486 (9 
■ 5 m) 
1910.760 
I 07?43 
I 4 l "20 
■ 777 
107-75 
141.20 
.780 
107.08 
141.60 
1910.77 
107.43 
141.33 
A and DM 
(25 0 ) 1478 (8.5) 
1910.8 
A R. A. + 49? 3 
A Decl. -f 76"6 (3 
1900. 
49.4 
82.8 A. G.-Oxf. 
The last 
comparison star is 
A 513 - 
Groombridge 
1228 (6.0. 
• -II- 3 ) 
R. A. 6" 47’" 44 
r s Decl. + 
70 ° 58' 
1910.049 
356?35 
ii6"82 
.091 
356.55 
116.73 
• 093 
356.48 
117.50 
1910.08 
356.46 
117.02 
The large star has no sensible proper motion. 
Groombridge o"o22 in i63?3 
Probably unchanged. The prior measures are discordant in 
distance: 
1878.24 
356?33 
117^96 
in 
B 1 
79.81 
355-95 
116.01 
in 
B 1 
7983 
355-58 
II 7 - 4 I 
in 
B 1 
80.19 
356.13 
116.66 
in 
B 1 
39 Geminorum (6.4.. 
.12.4) 
R. A. 6" 5i m 27* 
Decl. + 26° 14' 
1910.760 
28?2 
28'.'35 
.780 
28.1 
28.06 
.835 
27.6 
28.21 
1910.79 
28.0 
28.21 
No other measures. The proper motion of 39 Geminorum is 
given: 
Nova Geminorum No. 2 
R. A. 6 h 49™ 12 s Decl. + 32 0 15' 
A and C (3.8...12.0) 
1912.197 
.236 
•255 
9 S? 8 7 
98.68 
98.78 
79"46 
79.60 
79.60 
1912.22 
98.78 
79-55 
A and B (13.5) 
1912.236 
i6° 3 
11 "85 
•255 
i 5 -i 
11.83 
1912.24 
16.2 
11.84 
The first measure of the new star was made on the night of 
March 19 when the brightness was about maximum. At this 
time the new star was a most brilliant red. Later it had de¬ 
clined to about 6 m. The place given above is for 1912. 
R Geminorum (Var. ..II. 4) 
R. A. 7" o'" 8 s Decl. + 22 0 53' 
1910.049 200!10 172"67 
.093 200.75 172.30 
1910.07 200.42 172.48 
The principal star, which is variable, is DM (22 0 ) 1577. 
Probably fixed. 
1880.05 200?26 I73"73 2n B1 
Piazzi VI. 329 and 332 (8.0...8. 0 ) 
R. A. 7 h i m 9 s Decl. + 15 0 43' 
A and B 
1908.102 
98^84 
i72"o7 
• 159 
98.92 
171.73 
. 192 
98.50 
172.03 
1908.15 
98.75 
171.94 
B 
and C (11.3) 
1908.102 
87^5 
88"88 
• 159 
87.12 
88.95 
. 192 
87.07 
89.00 
1908.15 
87.08 
88.94 
The only direct measures of AB are: 
1891.21 98^65 
I 72"50 
2n 
1908.15 98.75 
171.94 
3 n 
Both stars are found in many of the star catalogues, from all 
of which it appears that there has been no relative motion. The 
relative positions in A. G. Berlin, Paris and Cincinnati, in con¬ 
nection with the more recent measures, show a common proper 
motion. 
From transit positions the proper motions are given: 
A B 
Porter 
o".222 
in 
191^6 
0"2I4 
in 
I 90°4 
A. G. Ber. 
0.232 
in 
192.6 
0.197 
in 
188.0 
Paris 
0.262 
in 
180.0 
0.250 
in 
180.0 
Auwers 
Boss 
o"i98 in 294 °7 
0.183 in 298.0 
26 
There are no other measures of the faint star C. 
