Information AboutBetelgeuse |
| CATEGORIES ABOUT BETELGEUSE | |
| bayer objects | |
| orionis, alpha | |
| orion constellation | |
| red supergiants | |
| semiregular variables | |
| arabic words and phrases | |
Betelgeuse ( Alpha (α) Orionis) is a Semiregular Variable Star located 427 Light-year s away. It is the second brightest Star in the Constellation Orion , and the ninth Brightest Star in the night sky. Although it has the Bayer Designation "alpha", it is not as bright as Rigel (Beta Orionis). It is a Vertex of the Winter Triangle Asterism . Betelgeuse is a Red Supergiant , one of the Largest Stars known. If it were placed at the center of our Solar System , its outer surface would extend between the orbit of Mars and Jupiter . The Angular Diameter of Betelgeuse was first measured in 1920–1921 by Michelson and Pease using an Astronomical Interferometer on the Mount Wilson 100 Inch Telescope . ETYMOLOGY |
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