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Beta Geminorum, 78 Geminorum

Proper NamePollux
Bayer DesignationBeta Geminorum
Flamsteed Number78 Geminorum
HR (BSC)2990
Right Ascension7h 45m 19s
Declination+28° 1' 34"
Distance34 light years
10 parsecs
MagnitudeApparent: +1.2
Absolute: +1.1
Spectral ClassK0III Orange Giant
Planets in this systemThestias (Pollux b), gas giant
Optimum VisibilityJanuary / February
NotesAn orange giant star, Pollux is some ten times the diameter of the Sun and lies nearly 34 light years away. It has one known planet, named Thestias, which is a gas giant with nearly three times the mass of Jupiter.

An orange giant, the brightest of the stars of Gemini despite its 'Beta' designation, and one of the brightest in the entire sky. It is less than thirty-five light years from the Solar System.

Imagery provided by Aladin sky atlas


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