3.8
Apparent Mag1,150
Distance (ly)O9.5V+B0.5V
Spectral Type33,000
Temperature (K)Sigma Orionis is a magnificent multiple star system south of Alnitak with at least five components.
Stellar Data
Apparent Magnitude3.8
Absolute Magnitude-3.96
Distance1,150 light-years
Spectral TypeO9.5V+B0.5V
Temperature33,000 K
Luminosity35,000 L☉
Radius5 R☉
Mass18 M☉
Right Ascension05h 38m 44.8s
Declination-02° 36′ 00.2″
ConstellationOrion
Notable Facts
- Sigma Orionis has at least five component stars
- It contains some of the hottest stars in the sky
- The surrounding cluster is named after this star