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Proper Name	None
Bayer Designation	Tau Canis Majoris
Flamsteed Number	30 Canis Majoris
HR (BSC)	2782
HD	57061
Constellation	Canis Major
Right Ascension	7h 18m 42s
Declination	-24° 57' 16"
Distance	c.4,800 light years c.1,500 parsecs
Magnitude	Apparent: +4.4 Absolute: -5,4
Spectral Class	O9Ib Blue-White Supergiant
Optimum Visibility	January / February
Notes	An 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.

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