O9/B0 ~

Temperature						Luminosity
Type	Class	Value	Temperature	Details		Type	Class	Details		Pecularities	Quality
Harvard	O	9.5	31500 K	Alternative Harvard spectral value Harvard spectral value is 9 with class Harvard spectral class O with effective temperature [30000, 60000] ; absorptions [N, C, He, O] or Harvard spectral value is 0 with class Harvard spectral class B with effective temperature [10000, 30000] ; absorptions [He, H]				unknown luminosity			~

COBREX simplification = O9.5 ~

Temperature
Type	Class	Value	Temperature	Details		Quality
Harvard	O	9.5	31500 K	Harvard spectral value is 9.5 with class Harvard spectral class O with effective temperature [30000, 60000] ; absorptions [N, C, He, O]		~

Ref: An Encoding System to Represent Stellar Spectral Classes in Archival Databases and Catalogs Version 1.4