CHAPTER XI.—V DELPHINI. 
157 
Table 96.—7458 V Delphini. Mean Magnitudes from 447* Day Groups. 
Group No . 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
J. D-. 
44 
88 
132 
176 
220 
265 
309 
353 
397 
441 
485 
529 
r 
t 
22 
66 
98 
5i7 
3334 i 
M 
JM 
10.98 
+ 1 . 19 
11 . 81 
+ 123 
12-35 
+ 1.06 
10.80 
+ 0.32 
1 
No. 
3 
5 
2 
3 
r 
t 
24 
60 
518 
3863 
M 
JM 
9.60 
— 0.20 
10. 24 
-0.17 
11.83 
+ I-43 
No. 
8 
2 
.... 
. . • • 
1 
r 
t 
3 
75 
114 
514 
1 
_ J 
M 
10.83 
11.46 
12.46 
9.67 
43^ 
JM 
+ 0.95 
+ 0.71 
+ 0.75 
-0.99 
No. 
1 
3 
3 
3 
r 
t 
24 
64 
107 
160 
226 
294 
340 
.... 
4921 \ 
M 
8.31 
9-35 
10.89 
12.74 
I4*3± 
15-49 
17.o± 
JM 
-1.47 
— 1.17 
— 0.64 
-0. 13 
— O. 2± 
-0.44 
+ o.4± 
No. 
5 
6 
3 
1 
2 
3 
1 
r 
t 
.... 
428 
449 
j 
M 
15.20 
14.66 
5450 i 
JM 
.... 
— 0.06 
+ 0.43 
l 
No. 
.... 
.... 
1 
1 
t 
30 
229 
.... 
1 
5979 -j 
M 
10.34 
14.90 
.... 
JM 
+ 0.56 
+ 0-34 
.... 
No. 
2 
I 
.... 
t 
• • • • 
191 
429 
6508 i 
M 
.... 
i5°± 
14-77 
JM 
+ i-4± 
-0-39 
No. 
.... 
1 
3 
( 
J 
t 
M 
.... 
.... 
7037 1 
JM 
.... 
.... 
, 
l 
No. 
.... 
r 
t 
23 
66 
107 
160 
191 
227 
294 
340 
429 
449 
516 
Means "j 
M 
9 . 62 
10 . 63 
11.85 
12.74 
15 °i 
14.50 
15-49 
i7-0± 
14.88 
14.66 
10.46 
JM 
-0.17 
+ 0.06 
+ 0.31 
-0.13 
+1 -4± 
— 0.02 
-0.44 
+ 0.4± 
-0.31 
+ 0.43 
— 0.08 
l 
No. 
19 
16 
8 
I 
1 
3 
3 
1 
.... 
4 
I 
. 
7 
MAGNITUDE-CURVE. 
Fig* 3 1 gives a graphic view of the relation between the visual and photo¬ 
metric magnitudes. From this curve are taken the magnitudes of the stars not 
measured photometrically, and also the magnitude of the variable. The devia¬ 
tion of the star / from the curve seems greater than is allowable; this is explained 
by the fact that its place in the light scale depends on but one comparison with 
the variable, and therefore the effect of an error is slight. 
