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O5 spectral class

(O5)
(type of star with about 50 times the mass of the Sun)

The O5 spectral class (O5) is a subtype of O-type star, specifically, a spectral class for stars of about 50 solar masses. They burn up their hydrogen in about a million years. Characteristics:

45000Ksurface temperature
12radius(solar)
60mass(solar)
-5.7absolute magnitude(visual)
790,000bolometric luminosity(solar)
3,000,000 yearslifetime
.00001%abundance(all O stars)

(star type,spectral type)
http://en.wikipedia.org/wiki/O-type_main-sequence_star
http://www.atlasoftheuniverse.com/startype.html

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