Sigma Orionis
Sign in to saveAlso known as 18 Ori, σ Ori, σ Orionis, 18 Orionis, HGAM 463, HR 1931, HD 37468, NSV 16610
five-star system in the constellation Orion
Wikidata facts
- Constellation
- Orion
- Image
- Sigma orionis cluster.jpg
Show 12 more facts
- spectral class
- O9.5V+B0.5V
- catalog code
- UBV M 11305
- apparent magnitude
- 3.790166
- effective temperature
- 31270
- parallax
- 3.04
- radial velocity
- 22.3
- right ascension component of proper motion
- 1
- epoch
- J2000.0
- declination component of proper motion
- 4
- age estimated by a dating method
- 0.3
- right ascension
- 84.68652242855
- declination
- -2.60007866108
Sources (2)
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