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    What brightest star in Canis Major has a white dwarf companion nicknamed "the Pup"?

    Question #102871. Asked by star_gazer. (Feb 08 09 11:01 PM)


    zbeckabee

    		SIRIUS: Sirius is the brightest star in all the skies, with a magnitude of -1.5. Sirius is not the largest star in the heavens, only about twice the diameter and mass of our sun. Its brightness is contributed by its proximity to our solar system, only 8.7 light years away. Thus it outshines bigger stars like Betelgeuse in Orion, which is further away. Sirius is the seventh closest star to us.

    Sirius also has white dwarf companion star, nicknamed the Pup. This comrade is only about 2% of the suns surface, around twice the size of the earth.

    http://elvalleastronomers.com/constellations/CanisMajor.htm

    Feb 08 09, 11:43 PM
    star_gazer

    		It is also known as the Dog Star.

    http://www.physics.purdue.edu/astr263l/forum/Sirius.html



    Feb 09 09, 12:38 AM

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