How large is Betelgeuse?

Large is not even enough to describe the size of Betelgeuse. After all, the star is not called "supergiant"for nothing! The diameter of Betelgeuse is approximately 850 million miles or 1.4 billion kilometer. Compared to the sun, this is 1000 times our sun's diameter. The mass of Betelgeuse is about 15.3E30 kg or about 10 solar mass. This is about 20 times the mass of the sun with 1.989E30kg mass! Think this is large? Think again, the Canis Majoris star has a 59.67E30 kg mass!

Betelgeuse Diameter

Size compared to the sun. The sun is at the core. 

Mass relative to other planets. In order:

Earth->Sun->Eta Carinea->Betelguese->Canis Majoris

Works Cited
"Facts About Betelgeuse." Betelgeuse Star- Facts About Betelgeuse. Solar System Quick, n.d. Web. 09 Dec. 2014.
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"How Much Does Betelgeuse Weigh?" MIT Technology Review. MIT Technology Review, 23 Sept. 2011.Web. 09 Dec. 2014.
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Maddalena, Ronald J. "Betelgeuse." Betelgeuse. Orion Tour Center, 1998. Web.11 Nov. 2014.

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