Burnham: Measures of Proper Motion Stars 
1911.4x1 
59 ° 30 
46 "27 
.468 
59-40 
46.06 
•471 
59-43 
46.06 
.487 
59 -o 8 
46.17 
1911.46 59.30 46.14 
From 20 positions of AC (1890-1911) the proper motion of 
is: 
o"934 in 242°5 
This will not be materially changed by later measures. 
A and DM (56°) 2784 
1910.509 
.529 
• 53 i 
I4i?90 
142.15 
142.02 
20o"93 
200.68 
200.93 
1910.52 
142.02 
200.85 
1911.411 
I 4 I -93 
200"59 
• 47 i 
142.00 
200.81 
• 487 
142.05 
200.64 
1911.46 
141.99 
200.68 
The motion deduced from the measures of the distant star 
of course should be exactly the same, but the agreement is all 
that could be expected, considering the fact that the interval 
covered by the micrometer positions is only ten years. 
o"92Q in 246?2 
11772. 8 Cephei. |3 702. (3.0...13.0) 
R. A. 22" 24 m 43 s Dccl. + 57 0 48' 
1911.411 
A and B 
284? 6 
I 9"67 
.468 
284.7 
19.62 
• 471 
285.3 
20.30 
.487 
286.0 
19.74 
1911.46 
285.1 
19.83 
The proper motion of 8 Cephei is small; and, therefore, 
from meridian observations uncertain in direction and amount. 
Some of these values are: 
Auwers 
o'.'oio 
in 
I 5 i °9 
Groombridge 
0.018 
in 
112.4 
Newcomb 
0.0x3 
in 
83.6 
Boss 
0.0x2 
in 
75-9 
From the three sets of measures of AB on 9n (1878-1911) 
we have for a corrected and independent value: 
o"oi7 in 77?2 
The measures should be continued after the proper interval 
for a final correction. 
The proper motion of the Struve companion C (Bradley 
2972) is given: 
Auwers o"o27 in iii?7 
Boss 0.028 in 69.2 
As there has been no sensible change in AC in 75 years, the 
proper motion is evidently the same for each star. 
11773. 02 472 rej. (6.8... 11.7) 
R. A. 22” 25 m 6 s Dccl.+ 5I°48' 
1910.698 i?6 14^49 
.701 1.0 14.55 
•703 _ 0-7 _ 14-34 
1910.70 1.1 14-46 
The distance may be decreasing. The proper motion of A is : 
A. G. Harv. d'043 in 330?7 
11778. 02 473. (6.7...10.0) 
R. A. 22 h 25 m 46 s Decl. + 56° 37' 
1912.717 357?2 14V69 
•753 357 - 2 _ 14-77 
1912.73 357-2 14.73 
No change since 1848. No proper motion found in the lead¬ 
ing star catalogues. 
11779. 22917. (8.0...8.0) 
R. A. 22 h 25 m 50 s Decl. + 52 0 55' 
A and C (11.5) 
1911.334 i86?6o 89^47 
.373 186.45 89.54 
•375 185.60 89.51 
1911.36 186.22 89.51 
For the proper motion of AB. No change in the Struve 
companion. 
A. G. Harv. o"o97 in 90?o 
11781. H 1777. (9.0...12.0) 
R. A. 22 11 25™ 54 s Decl. + 47 0 49' 
I 9 H -334 320?5 11 "09 
•373 319-8 11.32 
.392 318.9 11.32 
1911.36 319.7 11.24 
Evidently an error in the Cincinnati distance of 1879. 
11786. uLacertae. (3703. (3.8...12.0) 
R. A. 22 h 26 m 21 s Decl. + 49 0 40' 
1912.408 294?53 34^26 
.427 296.18 34.24 
.430 295.68 34.60 
1912.42 295.46 34.37 
From the measures of the faint star (1878-1912) the cor¬ 
rected proper motion of a Lacertae is: 
0H35 in 88?3 
287 
