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Xi Geminorum, 31 Geminorum

Proper NameAlzirr
Bayer DesignationXi Geminorum
Flamsteed Number31 Geminorum
HR (BSC)2484
Right Ascension6h 45m 17s
Declination+12° 53' 44"
Distance59 light years
18 parsecs
MagnitudeApparent: +3.3
Absolute: +2.1
Spectral ClassF5III Bright Yellow Giant
Optimum VisibilityJanuary
NotesThis star, lying near the point where Gemini meets Monoceros, is rather more massive than the Sun, and is entering the giant phase of its existence. Alzirr is notable for its rapid axial rotation, and the possible existence of a spectroscopic binary companion.


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