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Proper NameNone
Bayer DesignationTau Canis Majoris
Flamsteed Number30 Canis Majoris
HR (BSC)2782
ConstellationCanis Major
Right Ascension7h 18m 42s
Declination-24° 57' 16"
Distancec.4,800 light years
c.1,500 parsecs
MagnitudeApparent: +4.4
Absolute: -5,4
Spectral ClassO9Ib Blue-White Supergiant
Optimum VisibilityJanuary / February
NotesAn intensely luminous supergiant of the blue-white O-type classification with multiple orbiting companions, this immense star lies at the heart of an open cluster - the Tau Canis Majoris Cluster - more than four thousand light years from the Solar System.

Imagery provided by Aladin sky atlas


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