Spectral TypeO9.5 Iab
Temperature30,000 K
O9.5 Iab TypeConstellation: Orion
Alnitak
Zeta Orionis
Alnitak marks the eastern end of Orion's Belt and powers the Flame Nebula.
Distance
1,260 ly
Light Years from Earth
Age
6 million years
Estimated
Mass
33 M☉
Relative to Sun
Radius
20 R☉
Relative to Sun
Surface Temp
30,000 K
Effective Temp
Luminosity
250,000 L☉
Total Energy Output
Astrophysical Data
Apparent Magnitude1.77
Absolute Magnitude-5.25
Spectral ClassificationO9.5 Iab