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===Sirius B===

===Sirius B===

Nicknamed “the Pup”, Sirius B is a white dwarf and is more than 8,200 times as faint as it’s larger companion. The star is estimated to have about the same mass as out sun, but it’s diameter of 9,200 km is smaller than that of the Earth’s.  Scientists theorize the star was once one of a spectral class B stars much like Regulus before becoming a red giant and finally a white dwarf<ref name="SiriusAB">http://solstation.com/stars/sirius2.htm</ref>.

Nicknamed “the Pup”, Sirius B is a classified as a white dwarf DA2-5, and is more than 8,200 times as fainter then it's primary (360 times fainter then our Sun). Because the star is a white dwarf, it is extremely dense, holding 97.8% of the Sun's mass but is only 12,000 km in diameter, slightest smaller then the Earth.<ref>http://hubblesite.org/newscenter/archive/releases/2005/36/text/</ref> Scientists theorize the star was once one of a spectral class B stars much like [[Regulus]] before becoming a red giant and finally a white dwarf.<ref name="SiriusAB">http://solstation.com/stars/sirius2.htm</ref>

==Disambiguation==

==Disambiguation==