144 
RESEARCHES IN STELLAR PHOTOMETRY. 
Table 88.—7269 SX Cygni. Observed Maxima and Minima. 
Elements of maximum. 1900 Oct. 2 (J. D. 2415295) + 409d E. M—m=173<L 
Maxima. 
23 
Date. 
Mag. 
U 
Corr. 
Wt. 
Cu 
W 
Calendar. 
J. D. 
H. 
P. 
0 
1900 Oct. 2 
5295 
9 23 
9-58 
0 
20 
1 
1901 Nov. 1 
5690 
8.8 
9-i 
- 14 
2 
2 
1903 Jan. 5 
6120 
8.8 
9.2 
+ 7 
1 
3 
1904 Feb. 19 
6530 
me 
+ 8 
0 
4 
1905 Apr. 11 
6947 
8.90 
925 
+ 16 
17 
Minima. 
Epoch. 
Date. 
Mag. 
Corr. 
Wt. 
Calendar. 
J. D. 
H. 
P. 
0 
1900 Apr. 16 
5126 
13-30 
1365 
+ 4 
33 
1 
1901 May 15 
5520 
me 
— 11 
1 
2 
1902 July 9 
5940 
me 
0 
7 
3 
1903 Aug. 23 
6350 
me 
+ 1 
2 
4 
1904 Oct. 7 
6761 
13.60 
13 95 
+ 3 
7 
The last observation used in forming the mean light-curve was that of 1905 
February 14, giving the elements at the head of Table 88. The maximum of 1905 
April 11 indicates a slightly longer period, about 410 days. The magnitude at 
maximum ranges from 8.5 to 9.2 on the Harvard scale, the minimum about 13.5. 
