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Phi Orionis: Wikis

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φ¹ Orionis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 5h 34m 49.2s
Declination 9° 29' 22"
Apparent magnitude (V) +4.39
Absolute magnitude (V) -3.04
Distance 1000 ly
(306.75 pc)
Spectral type B0V
Other designations
37 Orionis HR 1876,
HD 36822, FK5 208, SAO 112914,
HIP 26176, BD +09 877, TD1 4886

The Bayer designation Phi Orionis (φ Ori/ φ Orionis) is shared by two star systems, φ¹ Orionis and φ² Orionis, in the constellation Orion. The two stars are separated by approximately 0.71° on the sky. Phi Orionis also has the traditional name Khad, from the Arabic خد الجوزاء khad al-jauzah meaning Cheek of the Central One.

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φ¹ Orionis

Phi-1 Orionis, also called Khad Prior ("Preceding One of the Cheek"), is a binary star lying about 1000 light years from Earth. Phi-1 Orionis is a spectral type B0 main sequence star which has an apparent magnitude of +4.39.


φ² Orionis

φ² Orionis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 5h 36m 54.3s
Declination 9° 17' 26"
Apparent magnitude (V) +4.09
Absolute magnitude (V) +1.32
Distance 117 ly
(35.89 pc)
Spectral type K0III
Other designations
40 Orionis, HR 1907,
HD 36822, SAO 112958,
HIP 26366, BD +09 898

Phi-2 Orionis, also called Khad Posterior ("Succeeding One of the Cheek"), is a spectral type K0 giant which has an apparent magnitude of +4.09. It is about 115 light years from Earth.

References

External links

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