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Proper NameNone
Bayer DesignationPsi Andromedae
Flamsteed Number20 Andromedae
HR (BSC)9003
Right Ascension23h 46m 2s
Declination+46° 25' 13"
Distancec.1,000 light years
c.300 parsecs
MagnitudeApparent: +5.0
Absolute: -2.5
Spectral ClassG5Ib yellow supergiant
Optimum VisibilitySeptember / October (Usually visible from northern latitudes)
NotesAt the heart of the Psi Andromedae system is an immense yellow supergiant star with a diameter some forty-four times that of the Sun. This supergiant lies within a multiple system, with at least two smaller companion stars in orbit around it, and possibly more.


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