Eta Canis Majoris

name=Eta Canis Majoris }}

	Epoch	J2000
	Ra	07<sup>h</sup> 24<sup>m</sup> 111<sup>s</sup>
	Dec	-29&deg 18&prime 11&Prime
	Appmag V	245

	Class	B5 Ia
	B-v	-009
	U-b	-072

	Radial V	41
	Prop Mo Ra	-376
	Prop Mo Dec	666
	Parallax	102
	P Error	057
	Dist Ly	3,198
	Dist Pc	980

	Mass	15
	Radius	45
	Luminosity	100,000
	Temperature	13,500
	Metal
	Rotation

Eta Canis Majoris (η CMa / η Canis Majoris) is a star in the Constellation Canis Major . It also has the traditional name '''Aludra'''.

Aludra shines brightly in the skies in spite of a large distance from Earth due to being intrinsically many times brighter ( Absolute Magnitude ) than the Sun . A blue Supergiant , Aludra has only been around a fraction of the time our Sun has, yet is already in the last stages of its life. It is still expanding and may be becoming a red supergiant, or perhaps has already passed that phase, but in either case it will go Supernova within the next few million years.

The name Aludra originates from the / Astronomer s referred to a group of four stars in the Canis Major constellation, also known as the "Greater Dog", as ''Al 'Adhara'' "the virgins".

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Eta Canis Majoris

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