Sigma Orionis

Stellar classification



  • X 501
  • Y -331
  • Z -979
→ Sol: 1,148

Object type

  • Spectroscopic binary
  • Star
  • Double or multiple star
  • Star in Cluster
  • Infra-Red source
  • UV-emission source
  • Variable Star
  • X-ray source
simbad:* sig Ori


Sigma Orionis or Sigma Ori (σ Orionis, σ Ori) is a multiple star system in the constellation Orion, consisting of the brightest members of a young open cluster. It is found at the eastern end of the belt, south west of Alnitak and west of the Horsehead Nebula which it partially illuminates. The total brightness of the component stars is magnitude 3.80.

This article uses material from the Wikipedia article "Sigma Orionis", which is released under the Creative Commons Attribution-Share-Alike License 3.0.