Astrophysics (Index)About

Rigel

(Beta Orionis)
(brightest star in constellation Orion)

Rigel is the lower left-hand star of Orion, i.e., foot of his right leg (if he's facing us). It is a quadruple star system, the brightest of which is Rigel A, a blue-white supergiant and Alpha Cygni polar (ACYG). Rigel B is a spectroscopic binary system, with two main-sequence blue-white B9 stars, the pair about 2200 AU from Rigel A. Rigel C is another similar star, which orbits the Rigel B pair with 63 year period. Rigel lights up some nearby nebulae. Note that the determined characteristics depend upon an accurate measure of the star's distance, and determinations still vary. Characteristics based upon one determination:

Rigel A:

Rigel B:


(star,binary star,bright star,variable star)
Further reading:
http://en.wikipedia.org/wiki/Rigel
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
~0260pc860lyRigel
Coordinates:Rigel
J051432.27210-081205.8981

Referenced by pages:
absolute magnitude (M)
Bayer designation
B-type star (B)
near-Earth supernova
Orion
supergiant
variable star

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