NGC 6231

Selected MK spectral classification

No	Ref	MKS
0301	300	B8 V P:
0340	300	B3 V
0376	300	B9 IV:P
0394	300	B2 IV-V
0443	300	B25V
0452	300	B85V
0455	300	A5 III:
0461	300	B15V
0476	300	B8 V N
0480	300	B2 IV N
0482	300	B9 V
0513	300	B7 V N
0528	300	B6 V N
0529	300	B6 V N
0544	300	A3 V
0547	300	B2 V
0587	300	B4 V N