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Proper NameNone
Bayer DesignationPsi2 Orionis
Flamsteed Number30 Orionis
HR (BSC)1811
Right Ascension5h 26m 50s
Declination+3° 5' 44"
Distance846 light years
259 parsecs
MagnitudeApparent: +4.6
Absolute: -3.6
Spectral ClassB2 Blue Subgiant
Optimum VisibilityDecember / January
NotesPsi2 Orionis is a binary system consisting of two blue stars. The primary is a giant, and its companion a dwarf star that orbits the primary over a period of 2.5 days. The interaction of the two stars causes a slight variability in the combined magnitude of the system as seen from Earth.


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