Codex > Outer Orion Spur > Astronomical Bodies > Stars > A Type Star
A type stars are hot white or bluish-white main sequence stars. They usually range in mass from 1.4 to 2.1 solar masses and have a surface temperature reaching 10,000 K.
A Type
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A star in luminosity class I, II, III or IV, according to the Yerkes spectral classification.
A Type Giant
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A star in luminosity class II or III, according to the Yerkes spectral classification.
A Type Supergiant
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A star in luminosity class Ia, Iab or Ib, according to the Yerkes spectral classification.
