NGC 663
UBV photoelectric photometry
No
Ref
V
BV
UB
N
0040
173
9.27
+0.59
-0.28
2
0044
173
8.50
+0.66
-0.18
2
0054
173
8.91
+0.77
-0.09
2
0086
173
8.95
+0.85
+0.08
2
0307
173
9.09
+0.78
+0.20
2
0376
173
9.74
+0.59
-0.45
2