Deep Sky
Betelgeuse
Star


Constellation: Orion
My guy! Probably the first star I learned as boy.  It is the 8th brightest star in the night sky, and second to Rigel in the constellation. 
Betelgeuse, is classified as a red supergiant, type M21ab, meaning it is one of the largest and most luminous of the observable stars, only aboutr 640 light-years away from us.  Astronomers are not sure of Betelgeuse’s mass though.  Anywhere from 5 to 30 times of our sun, its absolute magnitude is about -6.02.
Living fast and dying young, compared to our sun, Betelgeuse is a youngster only about 10 million years old.  It had a hard youth, having been ejected from its birthplace in near the Orion’s belt, Betelgeuse is running away at supersonic speed, some 30 km a second.  This is fast enough to create a bow shock some 4 light-years wide.
Astronomers believe that Betelgeuse will  go supernova within the next million years.


3 images stacked
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Date: 04-29-13