NGC 654
MK spectral classification
No
Ref
MK
0018
296
B1.5 V
0096
296
B1 V
0151
296
B2 II
0308
296
B1 V
0432
296
K2 IV:
0554
296
F5 Ia
0555
296
A2 Ib
0556
296
B1.5 IV
0559
296
B2 IV
0582
296
B1 V
0583
296
B2 IV