Betelgeuse

Details Betelgeuse Betelgeuse

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke5009.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 5009. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astrophysics

Stars, Individual Stellar Objects

Scientific paper

The star α Orionis, marking the right shoulder of the Hunter in the ancient constellation figure. It is a red giant of spectral type M2Ib, apparent magnitude 0.45. At a distance of 427 light-years (parallax 0.008''), its apparent brightness arises from its high intrinsic luminosity (absolute magnitude (5.1) which is about 14 000 times that of the Sun. It was the first star to have its diameter re...

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