Burnham: Measures of Proper Motion Stars 
A and B (12.4) 
1911.164 
2i9?90 
46?52 
.200 
219-85 
45-89 
I9II.l8 
219.87 
46.20 
Oxford (Z 26°) 24256 
( 9 - 8 ) 
8 Hydrae (4.4...10.6) 
R. A. 8" 3i m 18* Decl. + 6° 7' 
1909.093 
3I2?22 
243'-77 
. 170 
3 U -94 
243-50 
.186 
3 II -98 
243-56 
1909.15 
312.05 
243-61 
R. A. 8 h i6 m 5 o?66 Decl. + 27 0 o' 17'R) 
This is closely following the last star, and is the 9.4m star 
DM (27 0 ) 1600. Place for 1900. The Oxford proper motion 
is: 
o"i 63 in 24o?5 
A and B (13.0) 
1911.164 226?3 3o"75 
Oxford 24255 and 24256 
1908.18 A R. A. + 25!95 A Decl. + i 84?2 Oxf. 
1911.14 25.97 183.7 P 
Oxford (Z 26°) 23968 ( 11 . 3 ) 
R. A. 8 h I7 m 24?59 Decl. + 25 0 28'36"6 
The place for 1900 is from an astrographic plate taken 
1908.19. From a comparison of this with an earlier photo¬ 
graph, the proper motion is found : 
o"26o in i8o?o 
This is identical with the 9.1 m star, DM (25 0 ) 1910. 
A and B (9.5...11.5) 
1910.142 I74°23 I46"o5 
Lalande 16494 (7 • 5 • •• 9 - 5 ) 
R. A. 8 h i8 m 26 s Decl. — o° 45' 
1907.845 44-75 153"83 
7.865 44.58 154-10 
8.022 44.80 I53-85 
The measures are: 
1891.21 45-52 I53"28 2n 
1907.91 44.71 153-93 3n 
Eng 
P 
These positions give for the proper motion of A: 
o'.'i32 in I52°4 
This is considerably smaller than that given from meridian 
positions: 
Stumpe 
Porter 
A. G. Nico. 
0"27I 
in 
147-2 
0.220 
in 
149.7 
0-235 
in 
I 5 I -4 
As it is very improbable that B has a proper motion of more 
than o'.'i, I have measured a third very faint star. 
B and C (13.2) 
1907.865 
I 2 ?I 7 
65^48 
8.022 
14.00 
66.59 
8.102 
13-53 
66.69 
1908.00 
13-23 
66.25 
The small star is DM (6°) 1997 (9.3). The only other posi¬ 
tion of this depends upon a single measure: 
1879-25 3 H °5 243 "88 in p 3 
The proper motion of the large star is given from meridian 
observations: 
Auwers o"c»97 in 
269? 1 
Newcomb 0.072 in 
258.6 
Boss 
0.074 in 
261.5 
39 and 40 Cancri (6.7 
...6.9) 
R. A. 8 h 
33 m 12 s Decl. + 20 0 26' 
A and B 
1907.845 
I 5 I ° I 3 
I 49 l' 6 i 
8.000 
151-05 
149-53 
8.022 
151-23 
149.42 
1907.95 
I 5 I-I 4 
149-55 
A and a (9.1) 
1907.845 
309^05 
I 33 " 6 i 
8.000 
309-48 
134-30 
8.022 
309.23 
134-19 
1907.95 
309-25 
134-03 
A and b (9.0) 
1907.845 
no ?68 
135-23 
8.000 
110.47 
I 34 - 9 I 
8.022 
110.90 
135-19 
1907.95 
110.68 
I 35 -H 
B and c (10.8) 
1907.845 
I47?82 
i 39"30 
8.000 
147-33 
139.21 
8.022 
147-72 
139-57 
1907.95 
147.62 
I 39-36 
Some of the recent positions of the large stars, including all 
the direct measures are : 
1881.4 
I 5 I -4 
150" 1 
A. G. Berlin 
1887.27 
151-25 
149-75 
2n Eng 
1894.2 
151-2 
150.3 
Greenwich 
1907.95 
I 5 I-I 4 
149-55 
3 n P 
It is evident from these positions that the relative change, if 
any, is less than the usual errors of the observations. 
The proper motion from transit positions are given: 
39 Cancri 
o'.'i 07 
in 
279°7 
Auwers 
0.041 
in 
247.0 
Hedrick 
0.044 
in 
239-9 
Boss 
40 Cancri 
0.065 
in 
291.7 
Auwers 
0.020 
in 
261.7 
Hedrick 
0.037 
in 
242.3 
Boss 
33 
