Burnham: Measures of Proper Motion Stars 
These measures give for the proper motion of A, assuming 
the other to be fixed: 
o'.'388 in 66?3 
From transit observations 
we have 
: 
Stumpe 
0 "376 
in 
69° 7 
Paris 
0.401 
in 
70.9 
Porter 
0.365 
in 
68.6 
A. G. Bonn 
0-375 
in 
69.7 
If the micrometer positions are combined with the relative 
positions in the catalogues of Weisse, O. Arg. N., A. G. Bonn 
and Porter, the most probable movement of A is: 
o"4i6 in 72^4 
For verification of the real motion, I have measured a very 
faint star near A. 
A and a (12.8) 
1908.266 
67^62 
17M8 
•383 
67.80 
16.88 
.406 
68.55 
17.09 
1908.35 
67.99 
17-05 
Lalande 40844 (8.6.. 
.10.7) 
R. A.20 h 
59 m 24 s Decl. 
+ 6° 3/ 
A and B 
1908.441 
207 °22 
I 05"34 
•444 
207.15 
105.40 
.460 
207.27 
105.60 
1908.45 
207.21 
105.45 
A and C (9.1) 
1908.441 
119.25 
I 97"77 
•444 
119.13 
198.45 
.460 
119.17 
198.49 
1908.45 
119.18 
198.24 
The first measures are: 
AB 1891.85 204?68 H3"o3 in Eng 
AC 1891.91 121.53 204.07 2n Eng 
The four sets of measures give for the annual movement of 
the principal star: 
AB R. A. + o'To4 Decl. — o"557 
AC .085 .551 
+ 0.095 — 0-554 
The proper motion is given: 
Auvvers o"i59 in 2i7?o 
Boss 0.169 in 217.6 
No other measures of the small star. 
Piazzi XXI. 470 (8.O...T2.9) 
R. A. 2i h i m 22 s Decl. — 6° 3' 
1908.444 296^50 41 "81 
.479 296.03 42.14 
.482 295.40 42.00 
1908.47 295.98 41.98 
No other measures of the small star. The proper motion 
of A is given: 
Stumpe 0V300 in 45^6 
Porter 0.324 in 45.2 
DM (10°) 4481 (8.6...9.5) 
R. A. 2i"6 m i7 s Decl. + io° 9' 
A and B 
1908.422 357°87 i87"02 
•425 357-73 187.07 
•444 357-73 186.85 
1908.43 
357-78 
B and C (12.5) 
186.98 
1908.425 
3 i °45 
i 9"46 
•444 
30.08 
19-45 
•479 
30.10 
19-43 
1908.45 
30.54 
19-45 
No other measures of C. B is DM (io°) 4480. For AB we 
have: 
1892.84 
358?62 
iS7"34 
2n 
Eng 
1908.43 
357-78 
186.98 
3 n 
(3 
These positions give for the proper motion of the principal 
star: 
o" 175 in 8o?8 
From meridian observations: 
Stumpe o"200 in go°o 
Porter 0.172 in 83.3 
Therefore the proper motion of Lalande 40844 is: 
o'.' 563 in i7o?3 
This has been given: 
t Cygni (3.3.. .11.5) 
Stumpe 
o!'56o in 
I 77°9 
Porter 
0.529 in 
178.2 
4 Equulei (6.1.. 
.12.5) 
R. A. 20* 59" 1 
30' Decl. + 5 0 29' 
1911.487 
275 ° 5 o 
35 ° 8 5 
•509 
275-53 
35-55 
.526 
275.10 
35.40 
1911.50 
275-38 
35 - 6 o 
R. A. 2i h 7" 
1907.463 
•485 
.502 
1 50 s Decl. + 29 0 44' 
A and B 
204!90 69+16 
204.40 69.16 
204.00 68.79 
1907.48 
204.43 
69.00 
A and C (11.2) 
1907.485 
2 99°53 
9o"35 
.502 
299.52 
90.44 
1907.49 
299.52 
90.40 
69 
