RESEARCHES IN STELLAR PHOTOMETRY. 
I 6o 
Table 97. 
Reed. 
J. D. 
D. 
Mag. 
from 
curve. 
Date. 
Mag. 
1891 May 28 
9.2 
1881 
+134 
12.6 
June 9 
9 -i 
1893 
+146 
12.9 
June 15 
9.0 
1899 
+ 152 
13.0 
July 9 
9.0 
1923 
+ 176 
13-5 
July 27 
9.2 
1941 
+ 194 
13-9 
Aug. 20 
Sept. 2 
9-4 
1978 
+ 231 
14.6 
1892 Nov. 3 
9.0 
2406 
+130 
12.6 
If Chandler’s elements are used the intervals after maxima will be still greater, 
so that a considerable change in period or form of curve must be assumed to 
explain the discrepancy, unless the star was misidentitled. 
Note. —The well observed maximum of epoch 10, completed since the above 
was written, gives a correction to the ephemeris of +34 days. Using the three 
best determined maxima, the period between epochs 4 and 6 is 524 days, between 
6 and 10 it is 539 days, giving a mean period of 533 days, and indicating a secon¬ 
dary term in the elements, which will require further observations to definitely fix. 
Table 98.—7458 V Delphini. Observed Maxima and Minima. 
Elements of maximum. 1891 Jan. 14 (J. D 2411747 )+ 529 'l E. M — m = 1614 . 
Maxima. 
Epoch. 
Date. 
Mag. 
Corr. 
Wt. 
Calendar. 
J. D. 
H. 
P. 
3 
1S95 May 15 
3329 
10.50 
10.76 
—10 
6 
4 
1896 Nov. 16 
3880 
9 4 ° 
9.66 
+ 12 
19 
5 
1898 May 5 
4415 
me 
+ 18 
10 
6 
1899 Oet. 1 
4929 
me 
+ 3 
24 
7 
1901 Mar. 16 
5455 
7.80 
8.08 
+ 5 
1 
8 
1902 Aug. 22 
5984 
10.0 
10.3 
0 
4 
9 
1904 Jan. 20 
6500 
me 
-13 
1 
10 
1905 Aug. 18 
7076 
10.10 
10.36 
+ 34 
20 
Minima. 
Epoch. 
Date. 
Mag. 
Corr. 
wt. 
Calendar. 
J. D. 
H. 
P. 
4 
1896 May 30 
37 i° 
me 
+ 3 
1 
5 
1897 Nov. 18 
4247 
me 
+11 
I 
7 
1900 Sept. 27 
5290 
17.0 
17-3 
- 4 
8 
8 
1902 Feb. 26 
5807 
me 
—16 
2 
9 
1903 Aug. 23 
635 ° 
me 
— 2 
2 
10 
1905 Jan. 4 
6850 
me 
-35 
2 
