Spectral TypeB0 Ia
Temperature27,500 K
B0 Ia TypeConstellation: Orion
Alnilam
Epsilon Orionis
Alnilam is the central star of Orion's Belt and an extremely luminous supergiant.
Distance
2,000 ly
Light Years from Earth
Age
4 million years
Estimated
Mass
40 M☉
Relative to Sun
Radius
32 R☉
Relative to Sun
Surface Temp
27,500 K
Effective Temp
Luminosity
800,000 L☉
Total Energy Output
Astrophysical Data
Apparent Magnitude1.69
Absolute Magnitude-6.20
Spectral ClassificationB0 Ia