NGC 6530
UBV photoelectric photometry
No
Ref
V
BV
UB
N
0007
501
5.951
+0.010
-0.978
3
0007
501
5.967
+0.020
-0.903
3
0045
501
7.639
+0.832
+0.165
5
0065
501
7.467
+0.174
-0.822
4
0100
501
8.871
+0.073
-0.596
3