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Proper NameNone
Bayer DesignationTau Canis Majoris
Flamsteed Number30 Canis Majoris
BSC2782
HD57061
ConstellationCanis Major
Right Ascension7h 19m 22s
Declination-24° 59' 12"
Distancec.3,200 light years
c.1,000 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 three thousand light years from the Solar System.

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