Codex > Hawking's Gap > Astronomical Bodies > Stars > O Type Star
O Type
Reported
A star in luminosity class I, II, III or IV, according to the Yerkes spectral classification.
O Type Giant
Reported
A star in luminosity class II or III, according to the Yerkes spectral classification.
O Type Supergiant
Reported
A star in luminosity class Ia, Iab or Ib, according to the Yerkes spectral classification.
