G5-G9III ~

Temperature						Luminosity
Type	Class	Value	Temperature	Details		Type	Class	Details		Pecularities	Quality
Harvard	G	7	5300 K	Alternative Harvard spectral value Harvard spectral value is 5 with class Harvard spectral class G with effective temperature [5000, 6000] ; absorptions [Ca, He, H, Metals] or Harvard spectral value is 9 with class Harvard spectral class G with effective temperature [5000, 6000] ; absorptions [Ca, He, H, Metals]		Yerkes	III	Yerkes spectral luminosity with class III: normal giant			~

COBREX simplification = G7 ~

Temperature
Type	Class	Value	Temperature	Details		Quality
Harvard	G	7	5300 K	Harvard spectral value is 7 with class Harvard spectral class G with effective temperature [5000, 6000] ; absorptions [Ca, He, H, Metals]		~

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