Binary star system in the constellation Orion
 ;/td ;
! style="text-align: center; background-color: #FFFFC0;" colspan="2" | Observation dataEpoch J2000      Equinox J2000
! style="text-align:left" | Constellation
! style="text-align:left" | Right ascension
! style="text-align:left" | Declination
! style="text-align:left" | Apparent magnitude (V)
! style="background-color: #FFFFC0; text-align: center;" colspan="2"| Characteristics
! style="text-align:left" | Spectral type
! style="text-align:left" | U−B 
! style="text-align:left" | B−V 
 ;/th ; ;/tr ;
 ;/th ; ;/tr ;
22 Orionis is a binary star in the equatorial constellation of Orion. It has the Bayer designation o Orionis, while "22 Orionis" is the Flamsteed designation. This system is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 4.74. It is located approximately 1,100 light years away from the Sun based on parallax. The system is moving further from the Earth with a heliocentric radial velocity of +28.80
This is a single-lined spectroscopic binary with an orbital period of 293 days and an eccentricity of 0.15. The visible member, component A, has a stellar classification of B2 IV-V, matching a B-type star with a luminosity class that displays mixed traits of a main sequence star and a subgiant. It is a suspected Beta Cephei variable or a slowly pulsating B star. The star has nine times the mass of the Sun and is radiating 741 times the Sun's luminosity from its photosphere at an effective temperature of .
References.
 ;templatestyles src="Reflist/styles.css" / ;