NGC 6604
Spectral classification (1-d)
No
Ref
TS
0021
116
B0
0023
116
O9.5
0027
116
B3
0030
116
G4
0033
116
B4:
0034
116
B0.5
0037
116
K5:
0040
116
K3
0043
116
K3
0048
116
K4