Rigel(redirected from Beta Orionis)
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Rigel(rÿ -jĕl) (β Ori) A massive luminous and remote bluish-white supergiant that is very conspicuous and is the brightest star in the constellation Orion. It marks Orion's left foot. According to the Hipparcos catalog, its distance from the Sun is about 773 light-years (237 parsecs), though estimates have ranged between 900 and 1400 l.y. If the Hipparcos measurement is correct, Rigel is at least 40 000 times as luminous as the Sun. Rigel's diameter is thought to equal 70 solar diameters. It is a member of a large association that includes the stars of Orion's Belt and the Orion nebula. There is a 7th-magnitude companion at a separation of 9″.5, which is itself a binary. mv : 0.18 (var.); Mv : –6.69(?); spectral type: B8 Iae.
(also β Orionis), a star of visual stellar magnitude 0.1, one of the brightest stars in the sky; the brightest star in the constellation of Orion. Rigel is located at a great distance from the sun (330 parsecs) and has a high luminosity—81,000 times greater than the luminosity of the sun. Rigel is a visual binary star; its companion star, of stellar magnitude 7, is separated from Rigel by 10ʺ.