Rigel
Rigel, designated β Orionis, is a blue supergiant star in the constellation of Orion, approximately 860 light-years from Earth. Rigel is the brightest and most massive component – and the eponym – of a star system of at least four stars that appear as a single blue-white point of light to the naked eye.
Information
Surface temperature :- 11,000 K
Distance to Earth :- 864.3 light years
Radius :- 54.89 million km (78.9 R☉)
Magnitude :- 0.12
Constellation :- Orion
Spectral type :- B8Iab
Distance :- 1,010 ± 20 ly; (309 ± 5 pc)
Luminosity
Located 863 light-years away, Rigel's computed luminosity is an incredible 120,000 times the brightness of our sun. Its surface temperature is also far hotter than the sun, around 21,000 degrees Fahrenheit (11,600 degrees Celsius).
Colors
blue
Rigel is a blue supergiant that is the brightest star in the constellation Orion (the Hunter).
Categories
Rigel is classified as a class Ia luminous supergiant based on its hydrogen spectral lines.
Composition
Rigel is one of the so-called "thin-disk" stars, so it probably contains about 1.6% "metal" by mass. Astronomers use a different definition for metals than chemists do. In stellar structure, a "metal" is any element heavier than helium. The "metals" are: carbon, nitrogen, oxygen, neon, magnesium, silicon, sulfur, iron.
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