B9II/III ~

Temperature						Luminosity
Type	Class	Value	Temperature	Details		Type	Class	Details		Pecularities	Quality
Harvard	B	9	12000 K	Harvard spectral value is 9 with class Harvard spectral class B with effective temperature [10000, 30000] ; absorptions [He, H]		Yerkes	II/III	Yerkes spectral luminosity with class II: bright giant	Yerkes spectral luminosity with class III: normal giant		~

COBREX simplification = B9 ~

Temperature
Type	Class	Value	Temperature	Details		Quality
Harvard	B	9	12000 K	Harvard spectral value is 9 with class Harvard spectral class B with effective temperature [10000, 30000] ; absorptions [He, H]		~

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