126 
RESEARCHES IN STELLAR PHOTOMETRY. 
Table 76.— 7220 S Cygni. Visual Observations of the Variable. —Continued. 
Date. 
<u 
d 
5 
No. 
Month 
and Day. 
Hour 
C. S. T. 
Julian 
Day, 
G. M. T. 
3 
0 
0 
H 
<V 
a, 
< 
1895 
2410000+ 
44 
June (. 
9 
3349 63 
150 
6 
45 
13 
9 
3358.63 
150 
6 
46 
20 
9 
336563 
150 
6 
1898 
47 
June 25 
11 
4466.71 
80 
12 
48 
July 6 
10 
4477.67 
275 
12 
49 
25 
11 
4496.71 
275 
12 
50 
Aug. 8 
10 
4510.67 
275 
12 
5 i 
20 
9 
4522.63 
275 
12 
1900 
52 
June 28 
5199 
237 
40 
53 
July 20 
12 
5221.75 
237 
40 
54 
Aug. 16 
10 
5248.67 
460 
40 
55 
29 
• • 
5261 
. . 
56 
3 o 
• • 
5262 
57 
58 
Sept. 12 
12 
1 
l 
5275 
75 
12 
59 
60 
13 
13 
1 
f 
10 
5276.67 
237 
40 
61 
62 
Oct. 4 
10 
5297.67 
237 
40 
63 
16 
10 
5309 67 
460 
40 
64 
26 
6 
531950 
150 
6 
65 
Nov. 21 
6 
5345-50 
150 
6 
1901 
66 
Oct. 18 
• • 
5666 
12 
1902 
67 
Mar. 15 
16 
5824.92 
237 
40 
68 
Oct. 29 
10 
6052.67 
75 
12 
69 
. . 
70 
30 
. . 
6053.67 
75 
12 
7 i 
3 i 
9 
6054.63 
237 
40 
72 
Nov. 3 
9 
6056.63 
237 
40 
73 
19 
8 
6072.58 
75 
12 
74 
24 
9 
6077.63 
24 
75 
Dec. 26 
7 
6110.54 
237 
40 
1903 
76 
Tan. 17 
6 
6132.50 
460 
40 
77 
Mar. 20 
17 
6194.96 
237 
40 
78 
Apr. 3 
14 
6208.83 
237 
40 
1904 
79 
July 27 
10 
6689.67 
. . . 
24 
80 
3 i 
12 
6695.75 
81 
Aug. 27 
8 
6720.58 
. . 
82 
Sept. 3 
10 
6727.67 
40 
6 
83 
Oct. 1 
9 
675563 
40 
6 
84 
8 
9 
6762.63 
237 
AO 
Comparisons. 
Reduction, Steps. 
v glimpsed, vx 
v^x, 1 1 — 2v . . . . 
V5—6X . 
23.0, 24.2 
xyy, yiv, W2y . 
y2v, limit v .. 
/ y8v, limit 1 <v .) 
l angle ydv is a right angle f 
y8v, limit v . 
v not seen, limit 3-4 < y. 
( yiov, Pyy, 7n«, viy .) 
3 is 16 magnitude, £ is 
17 magnitude. ) 
y 7 a , 0.4-5V, limit v . 
3 (is it 3 or v) limit. 
0.5-61', V2-33, vo—iv . 
v is < “. 
(photometer.) 
' v not seen, limit 4 < x, ■ 
( y glimpsed.) 
y5v, v*,v5v (t = a±) . 
6.4, 7.9, 10.4, 6.7. 
2.8, 2.0, 4.3. 
11.4, 9.4, 9.8. 
X3-4V, V2y . 
iviy, X2-3V, yil, «6y, V 4 < 5 ,) 
1 limit 3 . > 
(oyv, xiv, viy, limit y. . .) 
/is 1 ith mag. or brighter, > 
(/'is 1 i£ m .) 
m^v, oiv, z >3x . 
15 - 5 . 18.4 . 
17 - 4 , 165. 
18.0, 18.0, 17.4 
20.1, 21.0, 22.0. 
vl. 
a3V, vQ . 
] 2 V, vl . 
photometer... . 
photometer. . . . 
o2y, y near limit 
photometer. . . . 
photometer.... 
photograph.... 
yi-2v, v\t . 
6.4. 2.3.. . 
30.1, 25.7 
14.9, 14.6 
i 
y8v, tiv, V2 a, 7/6-8V. 
v not seen, limit a . 
v not seen, limit y ’and 6 
seen. 
8.4, 9.6, 
11.4, 
12.7 
photograph. 
7/4/. 
m6v, vio, v6x .. . 
0 1-27/, vix . 
v not seen, x seen 
JW vit . 
18.1, 23.0, 25 .0- 
20.5, 20.0. 
11.4, 11.6 
Means. 
Seeing. 
/. 
Steps. 
Mag. 
19.0 
n -95 
good 
248 
23 6 
11.12 
good 
257 
24 -5 
10.97 
good 
264 
1 . 5-4 
12-57 
57 
14.4 
12.75 
poor 
68 
8.4 
13.90 
good 
87 
8.4 
13.90 
good 
IOI 
<13 
<130 
fair 
7.8 
14.02 
136 
4-9 
14.60 
fine 
158 
< 0 
<156 
fair 
. . . 
3-0 
14.99 
.... 
207 
< 9 
< 13-9 
poor 
<15 
<12.7 
moon 
10. 2 
1352 
good 
213 
17.0 
12.30 
fair 
234 
170 
12.30 
fair 
246 
17.8 
12.18 
fine 
253 
21 .0 
H -59 
fair 
282 
25-7 
10.79 
good 
276 
4.4 
14.68 
poor 
107 
27.9 
10.37 
fair 
8 
10.32 
good 
9 
9.68 
poo* 
12 
11.03 
good 
28 
11 • 9 
good 
33 
14 £ 
12.70 
.... 
66 
10.5 
13-50 
fair 
88 
< 9 
<13-8 
.... 
< 0 
< 156 
.... 
. . . 
10.5 
fair 
29.7 
10.16 
good 
322 
22.4 
11.30 
good 
22 
20.2 
11.71 
good 
29 
<19 
<12.0 
good 
11 • 5 
1332 
fair 
64 
J Mag. 
— o. 11 
- 0-75 
— o. 78 
+ 0.24 
— 0.13 
+ 0.19 
— 0.21 
-0.51 
4-0.15 
4-1.19 
40.23 
-o. 13 
4 o. 21 
+ 0.23 
40.24 
— 0.70 
+ 0.46 
40.04 
— 0.04 
— 0.72 
4o. 13 
— o. 10 
— 0.27 
— 0.06 
4o.6i 
+ 0.80 
+ 0.62 
