A1IV-VkB9 ~

Temperature Luminosity
Type Class Value Temperature Details Type Class Details Pecularities Quality
Harvard A 1 9750 K Harvard spectral value is 1 with class Harvard spectral class A with effective temperature [7500, 10000] ; absorptions [H] Yerkes IV-V Yerkes spectral luminosity with class IV: subgiant Yerkes spectral luminosity with class V: main-sequence star kB9 ~

COBREX simplification = A1 ~

Temperature
Type Class Value Temperature Details Quality
Harvard A 1 9750 K Harvard spectral value is 1 with class Harvard spectral class A with effective temperature [7500, 10000] ; absorptions [H] ~

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