Rigel, also known by its Bayer designation Beta Orionis (β Ori, β Orionis), is the brightest star in the constellation Orion and seventh brightest star in the night sky, with visual magnitude 0.13.
The star as seen from Earth is actually a triple star system, with the primary star (Rigel A) a blue-white supergiant of absolute magnitude -7.84 around 120,000 times as luminous as the Sun.
An Alpha Cygni variable, it pulsates periodically. Visible in small telescopes, Rigel B is itself a spectroscopic binary system, consisting of two main sequence bleu-white stars of spectral type B9.
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