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B-type main-sequence star

Hertzsprung–Russell diagramSpectral typeOBAFGKMLTBrown dwarfsWhite dwarfsRed dwarfsSubdwarfsMain sequence("dwarfs")SubgiantsGiantsRed giantsBlue giantsBright giantsSupergiantsRed supergiantHypergiantsabsolutemagni-tude(MV)A B-type main-sequence star is a main-sequence (core hydrogen-burning) star of spectral type B. The spectral luminosity class is given as V. These stars have from 2 to 18 times the mass of the Sun and surface temperatures between about 10,000 and 30,000 K. B-type stars are luminous and blue-white.

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