Burnham: Measures of Proper Motion Stars 
This star is DM (25°) 2619 (8.0). A comparison of the 
Oxford and A. G. Camb. places confirms the motion, giving 
approximately o"i9 in 290°. 
The only available star for comparison is extremely faint. 
A and B (8.0... 
15 - 5 ) 
1911.219 
175-70 
I 44"79 
a Virginia (i.O. 
..12.2) 
R. A. 13" i8 m 
54* Decl. — io° 32' 
1909.071 
32?8 o 
I 47 " 8 4 
.148 
32.40 
147-50 
.164 
32.47 
148.23 
1909.13 
32.42 
147.86 
The only earlier position is from a single night, and therefore 
any deduced proper motion at this time would be of uncertain 
value. Future measures will remedy this. 
1879-25 32?9 144^42 in P 3 
The proper motion of a Virginis from meridian observations 
is: 
Auwers 
o"o6 7 
in 
251-7 
Newcomb 
0.053 
in 
232.3 
Boss 
0.055 
in 
228.9 
70 Virginia (5-2. 
..8.8) 
R. A. T3 h 22 m 
34* Decl. + 14 0 25' 
1909.170 
i37°So 
2 S 7 "95 
.186 
137.80 
287.44 
.206 
137-49 
287.44 
1909.19 
137-70 
287.61 
On account of the great distance for the micrometer, all the 
measures are subject to more than the usual error, but as the 
time interval is more than half a century, the proper motion 
should be substantially correct. The comparison star is DM 
(14 0 ) 2622. 
1852.27 
I 44°°3 
304"54 
in 
02 
1884.32 
140.53 
294-73 
2n 
H 2 
1909.19 
137.70 
287.61 
3 n 
P 
From these positions the proper motion of 70 Virginis is: 
o" 647 in 203?4 
This has been given from meridian positions: 
Auwers 
o"624 
in 
204? 7 
Paris 
0.626 
in 
205.0 
Porter 
0.623 
in 
204.5 
Boss 
0.634 
in 
202.5 
Piazzi XIII. 
163 (6.7.. 
.10.0) 
R. A. 13” 35 m 
7* Decl. + 28° 40' 
1907.997 
227*28 
9l"l2 
8.000 
227.42 
91-33 
8.039 
227-45 
91.41 
1908.01 
227.38 
91.29 
* »- 
I do not find any proper motion from meridian positions. 
This is near the cluster, Messier 3. The only other measure is: 
1879.25 228!i5 9i"58 2n 0* 
The two positions imply a proper motion in A of o"o42 in 
305°6. 
DM (18°) 2776 (9.2...10.6) 
R. A. 13“ 39 m 14 s Decl. + 18 0 27' 
A and B 
1911.260 
i 8 i ?37 
88" 78 
• 334 
181.70 
88.83 
• 337 
181.25 
88.35 
I 9 II- 3 I 
181.44 
88.65 
This small star has an extraordinary proper motion: 
A. G. Berlin F'889 in 168^3 
No other direct measures. From measures by Slocum of a 
plate made with the 40-inch refractor we have: 
1910.10 i8i?i9 90^69 
A and DM (18 0 ) 2777 (9.0) 
1875 A Decl. 395"o A. G. Ber. 
1907-45 331-25 Photo 
1910.10 321.65 Photo 
I 9 II -33 319-94 0 
Oxford (Z 26°) 34103 (10.3) 
R. A. 13" 39 m 44?oi Decl. + 26° 5' 36" 1 
This place for 1900 is from an Oxford plate made 1908.34. 
It is identical with the 9.5 m star, DM (26°) 2489. From a 
comparison with an earlier plate of the Astrographic Catalogue, 
the proper motion is deduced: 
o"186 in 285^6 
A and B (9.5...13) 
1911.164 
i62?57 
87'foo 
.184 
162.67 
88.03 
.219 
162.38 
87.23 
1911.19 
162.54 
87.42 
The comparison star is much too faint to appear on the pho¬ 
tographic plate 
Oxford (Z 26°) 34238 (9.3) 
R. A. 13" 52 m 25^50 Decl. + 25 0 24' 37"o 
The place (1900) is from an Oxford astrographic plate made 
1908.34, and the proper motion from this and an earlier plate 
is given: 
o"164 in i67?6 
This star is identical with the 9.1 m star, DM (25 0 ) 2706. 
A and B (9.3.. .12.9) 
1911.142 27?40 H 3'-93 
.219 27.58 113.76 
1911.18 27.49 113.84 
44 
