Best O Type
Updated Daily
Alnitak is the easternmost star in Orion's Belt, a multiple system dominated by a blue supergiant about 800 light-years away and near the Flame Nebula.
Naos (Zeta Puppis) is one of the hottest and most luminous stars visible to the naked eye, a blue O-type supergiant with a surface temperature near 42,000 K.
Delta Orionis, the westernmost star in Orion's Belt, a multiple-star system roughly 900 light-years away that lies almost precisely on the celestial equator.
Theta1 Orionis C is the most massive and luminous member of the Trapezium cluster in the Orion Nebula, an O-type star responsible for ionizing most of the surrounding nebula.
HD 93129A is one of the most massive and luminous O-type stars known, located in the Carina Nebula region and estimated to exceed 100 solar masses.
