52 
RESEARCHES IN STELLAR PHOTOMETRY. 
Table 29.—787 W Andromeda. Mean Magnitudes. 
6 -INCH. 
Star. 
December 6. 
December 21. 
October 30. 
Mean. 
Mag. 
J Mag. 
Mag. 
J Mag. 
Mag. 
J Mag. j 
Mag. H. 
Mag. P. 
J Mag. 
D 
7.70 
— 0.03 
7 -65 
— 0.08 
7-83 
4 -O.IO 1 
7-73 
8. 14 
±0.07 
E 
7.41 
— 0.03 
7-43 
— O.OI 
7-47 
4-0.03 
7-44 
785 
±0.02 
r 
6.90 
+ 0.05 
6.94 
+ 0.09 
6.71 
— 0.14 
6.85 
7.26 
±0.09 ! 
Mean.. 
7 . ^4 
7 . 7 S 
±0.06 
a 
9.09 
to 
-0.03 
9.20 
+ 0.08 
9.08 
— 0.04 
9.12 
9-53 
±0.05 
b 
9-39 
— 0.04 
9-52 
+ 0.09 
9-37 
— 0.06 
9-43 
9.84 
±0.06 
c 
9-23 
— 0.04 
9 • 4 ° 
+ 0. 13 
9 - J 9 
— 0.08 
9.27 
9.68 
±0.08 
0 
9 05 
+ 0.07 
8.99 
+ 0.01 
8.91 
— 0.07 
8.98 
9-39 
±0.05 
p 
7.89 
— 0.01 
7.98 
+ 0.08 
7.82 
— 0.08 
7.90 
8.31 
±0.06 
7 
7 7 i 
+ 0.08 
7.70 
4-0.07 
7-49 
— 0.14 
7 63 
8.04 
±0.10 
Mean.. 
8.72 
9 -13 
±0.07 
12-INCH. 
Star. 
November 17. 
November 18. 
November 19. 
Mean. 
Mag. 
J Mag. 
Mag. 
J Mag. 
Mag. 
J Mag. 
Mag. H. 
Mag. P. 
J Mag. 
0 
8.90 
4-0.03 
8.96 
4-0.05 
8.92 
— 0.01 
8-93 
9-34 
±0.03 
a 
9.06 
— 0.10 
9.14 
0.00 
9-25 
4-0.10 
9-15 
9-56 
±0.07 
P 
7-94 
4-0.05 
7.87 
— 0.02 
7.87 
— 0.02 
7.89 
8.30 
±0.03 
<7 
7-72 
4-0.05 
7.68 
4-0.01 
7.60 
— 0.07 
7.67 
8.08 
±0.04 
Mean.. 
8.41 
8.82 
4-0.04 
b 
9-54 
4-0.01 
9-57 
4-0.04 
9.48 
-0.05 
9-53 
9-94 
±0.03 
c 
9.26 
— 0.02 
9-31 
4-0.03 
9.28 
0.00 
9.28 
9.69 
±0.02 
f 
9 97 
-0. 15 
10.16 
4-0.04 
10.22 
4-0.10 
10.12 
10.53 
±0.10 
g 
11.03 
— 0.02 
11.06 
4-0.01 
11.06 
4-0.01 
11.05 
11.46 
±0.01 
Mean.. 
10.00 
10.41 
±0.04 
40 -INCH. 
Star. 
November 7. 
December 26. 
January 31. 
Mean. 
1 
Mag. 
J Mag. 
Mag. 
J Mag. 
Mag. 
J Mag. 
Mag. H. 
Mag. P. 
J Mag. 
b 
9-47 
-fo.09 
9-33 
-0.05 
9-33 
-0.05 
9 38 
9-79 
! 
±0.06 1 
c 
9 i 3 
4-0.01 
9.24 
4-0.12 
9.00 
— 0.12 
9.12 
9-53 
±0.08 I 
i 
10.14 
— 0.07 
10.23 
4-0.02 
10.25 
-fo.04 
10.21 
10.62 
±0.04 
g 
11.28 
— 0.02 
11. 21 
— 0.09 
11.40 
4-0.10 
11.30 
11.71 
±0.07 
Mean.. 
10.00 
10.41 
1 
±0.06 
U 
12.34 
— 0.08 
12.57 
4-0.15 
12.35 
-0.07 
12.42 
12.83 
±0. IO 
w 
12.96 
4-0.01 
12.97 
4-0.02 
12.93 
— 0.02 
12.95 
I 3-36 
±0.02 
y 
1358 
-0.03 
13-54 
— 0.07 
13-70 
4-0.09 
13.61 
14.02 
±0.06 
z 
13-27 
— 0.07 
13-44 
-fo.io 
13-31 
-0.03 
13-34 
13-75 
±0.07 
y 
14.42 
-0.13 
14.68 
4-0.13 
14-55 
14.96 
(O. 13 ) 
Mean.. 
±0.06 
