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Gamma Arae

Proper NameNone
Bayer DesignationsGamma Arae
Flamsteed NumberNone
HR (BSC)6462
HD157246
ConstellationAra
Right Ascension17h 25m 24s
Declination-56° 22' 40"
Distancec.1,100 light years
c.300 parsecs
MagnitudeApparent: +3.3
Absolute: -4.4
Spectral ClassB1Ib Blue Supergiant
Optimum VisibilityJune / July (Usually visible from southern latitudes)
NotesThis hot blue supergiant has a diameter more than twenty times that of the Sun, and emits some five thousand times as much light energy. It has a rapid rate of rotation, and is a variable star showing non-radial pulsations.

A distant blue supergiant star lying in the constellation of Ara. Though it lies more than 1,100 light years from Earth, it is so luminous that is visible to the naked eye.

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