Burnham: Measures of Proper Motion Stars 
80 Cancri (6.5.. .9. l) 
R. A. 9* 1 5 m 13* Dccl. + 18 0 32' 
1908.862 252?02 
I 33"33 
.882 251.82 
133-08 
.974 252.08 
132.93 
I908.9O 251.97 
I 33 -H 
For comparison we have: 
1870.5 25i?3 133-7 
A. G. Ber. 
1882.34 251.95 134-62 
in 
02 
1908.90 251.97 133-11 
3 n 
P 
There is evidently considerable error 
in the meridian posi- 
tions if the micrometer measures are 
substantially correct. 
The latter give for the apparent motion 
of 80 Cancri: 
o''o57 in 250?7 
The proper motion of the large star is 
given: 
Auwers 0" 076 in 
264?o 
Boss 0.045 in 
228.7 
I have measured the third star from B. These stars are 
DM (18 0 ) 2137 and 2136, the latter 9. 
.6 m. 
B and C 
1909.071 
3 i 7 °i 7 
I 48"36 
.112 
3 I 7 -I 7 
147-79 
.164 
317.07 
148.47 
1909.11 
317.14 
148.21 
Jt 1 81 Cancri (6.5.. 
- 13 - 3 ) 
R. A. 9” 
5 m 43 s Deck + 15 0 29' 
A and B 
1907.845 
ii8?05 
35"30 
8.022 
119.10 
35-26 
8.102 
117.97 
35-67 
1907.99 
118.37 
35-41 
A and C (9.5) 
1907.845 
229?25 
222'To 
8.000 
229.20 
222.67 
8.022 
228.97 
222.41 
1907.96 
229.14 
222.39 
No other measures of B. C is DM (15°) 2001. Of this we 
have the following measures: 
1855-25 
235°58 
237"11 
in 
02 
1870.28 
233-68 
232.58 
in 
02 
1882.34 
232.23 
228.06 
in 
02 
1907.96 
229.14 
222.39 
3 n 
P 
From which the proper motion of A is: 
o"s63 in 292^4 
The meridian positions give: 
Auwers o" 606 in 294?3 
Hedrick 0.573 in 295.1 
Boss 0.575 in 294.1 
Bradley 1300 ( 6 . 2 ... 9 . 7 ) 
R. A. 9 h 8™ 12 8 Deck + 35 0 8' 
1911.947 
12.066 
26H97 
261.73 
I52"64 
152.49 
1912.00 
261.85 
152.56 
No other measures. 
The proper motion of Bradley 1300 
Auwers 
0"162 in 
290°2 
Boss 
0.149 in 
283.2 
DM (23°) 2063 (7.5.. 
.9.0) 
R. A. 9 h 8 m 15 
Deck + 23 0 53' 
A and C 
1908.785 
82? 87 
6 o "38 
.882 
82.40 
60.23 
•974 
82.63 
60.49 
1908.88 
82.63 
60.37 
The prior measures give: 
1841.23 87?5o 
5 i"i 9 
in 
02 
1881.26 83.95 
56.53 
in 
02 
1881.24 84.40 
56.63 
3 n 
Doub. 
1908.88 82.63 
60.37 
3 n 
P 
From these positions we have for the 
proper motion of 
large star: 
0H53 
in 237?5 
The value derived from 
meridian observations 
appears 
be too large. 
Porter 
o"204 in 
224?8 
A. G. Ber. 
0.194 in 
223.9 
It is not likely that the small star has any sensible movement. 
To be certain of this hereafter, I have connected a faint star: 
A and B (10.7) 
1908.785 
i 69?93 
59"75 
8.974 
170.75 
59-70 
9.071 
170.83 
59-98 
1908.94 
170.50 
59.81 
40 Lyncis (3.4 
...8.6) 
R. A. 9 h I 3 m 
44 s Deck + 34 ° 54 ' 
A and B 
1908.060 
37-35 
2 io '.'35 
.082 
37-09 
210.10 
•159 
37 -18 
210.30 
1908.10 
37-21 
210.25 
B and C (= 2 
1342 ) 
1908.060 
32 i ?9 
i6 :'8 5 
.082 
321.0 
16.86 
• 159 
321.1 
17.02 
1908.10 
321.3 
16.91 
36 
