CHAPTER X.—sx CYGNI. 
r 43 
Table 87.—7269 SX Cygni. Mean Magnitudes from 34.1 Day Groups. 
Group No... . 
J- D. 
I 
34 -1 
2 
68.2 
3 
102.3 
4 
136.4 
5 
170-5 
6 
212.6 
7 
238.7 
8 
272.8 
9 
306.9 
10 
341-0 
11 
375-1 
12 
409.2 
4940 
5349 ' 
5758 * 
6168 ' 
6577 < 
6986 ' 
r t 
I M 
JM 
l No. 
t 
M 
JM 
No. 
r t 
M 
jm 
No. 
r * 
M 
JM 
No. 
r t 
M 
JM 
No. 
t 
xM 
JM 
, No. 
12 
9-73 
— 0.10 
7 
10 
10.42 
+ 0.64 
2 
43 
10.30 
-0.03 
4 
34 
11.20 
+ 0.95 
1 
75 
10.79 
-0.23 
3 
80 
n -43 
4-0.23 
I 
104 
11.98 
— 0.04 
1 
119 
13 - 2± 
+ 0.68 
1 
153 
12.96 
— 0.16 
3 
185 
13-24 
— 0.04 
3 
183 
i 3 - 6 ± 
+ 0.27 
I 
224 
12.95 
4-0.05 
3 
232 
12.65 
— 0.11 
2 
250 
12.39 
— O.I2 
2 
272 
12-57 
4 - 0.47 
I 
298 
11.52 
— 0.04 
4 
295 
11.69 
+ 0.07 
3 
324 
10.04 
— 0. 12 
4 
340 
8.66 
-0.56 
1 
3 i 5 
11.27 
4-0.47 
1 
363 
9-37 
4-0.30 
1 
353 
8-75 
-0.31 
1 
389 
9.68 
4-0.32 
2 
391 
9.24 
—0.16 
1 
f t 
12 
4 i 
76 
112 
153 
184 
227 
257 
297 
324 
358 
390 
Means 
9.88 
10.48 
1095 
12.59 
12.96 
13-33 
12.83 
12-45 
n -59 
10.01 
9.06 
9-53 
JM 
— O.OI 
+ 0.16 
— O. T2 
+ 0.32 
— 0.16 
+ 0.04 
— 0.01 
+ O.08 
4 0.01 
— 0.09 
0.00 
-fo.16 
l No. 
9 
5 
4 
2 
3 
4 
5 
3 
7 
6 
2 
3 
DAYS 
Fig. 30.—Mean Light-Curve of SX Cygni. 
