Burnham: Measures of Proper Motion Stars 
Assuming no motion in B, the measures of En, A and P 
(1863-1910) give for the apparent motion of A : 
o"i09 in I04?o 
This motion from meridian positions seems to be very un¬ 
certain : 
Auvvers o"oi6 in 248?! 
Boss 0.027 in 134.3 
Newcomb 0.021 in 142.6 
For determining hereafter the motion of B, if any, I have 
connected a faint star: 
5801. 02 (App.) hi. (7.0. ..9.0) 
R. A. 1 i h 23”' 44 8 Decl. + 30° 38' 
1909.206 33^29 66"98 
.227 33.16 67.24 
• 244 _ 33-48 _ 67.03 
1909.23 33.31 67.08 
Without change. No third star available for investigating 
the proper motion of A. 
Porter o"229 in 200 °5 
B and C (13- 3 ) 
1910.280 
233°13 
106". 46 
.318 
234-13 
105.98 
• 337 
233-33 
106.94 
1910.31 
233-53 
106.46 
There is a 14 m star 10" or 15" from C. 
A and DM (3 0 ) 2507 (9.3) 
1875 A R. A. + 51? 16 A Decl. — 28'.'2 A. G. Alb. 
1910.3 50.94 30.1 P 
B and DM (3 0 ) 2507 
1875 A R. A. + 50? 26 ADecl. + 63"8 A. G. Alb. 
1910.3 50.27 61.6 P 
5793. 5 7 Ursae Maj. 21543. (5-2...8.2) 
R. A. n h 22 m 37 s Decl. + 40° o' 
A and C (11.5) 
1909.936 
9?oo 
2l6"25 
10.091 
9.10 
216.76 
10.093 
9.00 
216.65 
1910.04 
9-03 
216.55 
The proper motion of AB is evidently very small: 
1879.62 8?61 
2i6"5i 
2n Bl. 
The 8 m star, DM (40°) 2432, 400" distant from 57 Ursae 
Maj. in the direction of 236°, has two 
small stars near for 
which we have positions in 
the Astrographic Catalogue. 
DM (40°) 2432 and star 
10.3 m 
1909.936 
183 °79 
97 "94 
10.091 
184.05 
97-85 
10.093 
184.03 
98.06 
1910.04 
183.96 
97-95 
DM (40°) 2432 and star 
10.4 m 
1909.936 
167 ?79 
128^85 
10.091 
167.82 
128.24 
10.093 
167.72 
128.52 
1910.04 
167.78 
128.54 
The other positions are: 
1895.31 184? 1 
98"43 
Donner 
1895.31 167.8 
128.59 
Donner. 
Meridian values of the proper motion of 57 Ursae are: 
Boss 
ol'osi in 
280? 1 
Auwers 
0.079 in 
286.9 
5809. H 500. ( 9 - 5 -.- 9 - 7 ) 
R. A. n h 25"' 25 s Decl. + 36° 32' 
1909.206 27?8 25M3 
.227 27.9 25.04 
1909.22 27.8 25.08 
Probably fixed. 
5814. H 2574. ( 9 - 5 -• - 9 - 5 ) 
R. A. n h 25 m 55 s Decl. + 53 ° 41' 
A and B 
1909.112 
77 ° 9 
36 " 6 7 
.186 
78.2 
36.78 
1909.15 
78.0 
36.72 
No early measures. The nebula referred to by Herschel is 
very diffused. 
H 2574 (B) and h 908 
1909.112 i5?o I29"33 
.186 15.4 129.43 
1909.15 15.2 129.38 
A and C (8.9) 
1909. 
071 
234-88 
62"s6 
.112 
234-77 
62.84 
. 148 
234-67 
63.02 
1909. 
,11 
234-77 
62.81 
Change uncertain, h 924 is 2 j 4 m / and 5' s; faint and diffused. 
The proper motion of 90 Lconis, if any, is small: 
Auwers o"o33 in 282?o 
Boss 0.011 in 248.2 
5853. H 183. (8...13.5) 
R. A. u h 3i m 48 s Decl.+ 13 0 37' 
1907.006 io?7 95"o3 
.120 10.7 95.16 
1907.06 10.7 95 09 
Only a little yellowish. No other measures. 
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