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[[Image:Orion constellation map.jpg|thumb|right|250px|Location of Rigel in the constellation of Orion.]]
'''Rigel''', also known as ''Beta Orionis'', is a blue-white [[supergiant]] [[star]] located in, and part of, the constellation of [[Orion]]. Rigel is actually Rigel A, the primary star of a binary star system. Rigel is the brightest star in the Orion constellation as well as the sixth brightest star overall in the night sky with an apparent magnitude of 0.18.<ref>http://webviz.u-strasbg.fr/viz-bin/VizieR?-source=+Hipparcos&-c=Rigel</ref>
'''Rigel''', also known as ''Beta Orionis'', is a blue-white [[supergiant]] [[star]] located in, and part of, the constellation of [[Orion]]. Rigel is actually Rigel A, the primary star of a binary star system. Rigel is the brightest star in the Orion constellation as well as the sixth brightest star overall in the night sky with an apparent magnitude of 0.18.<ref>http://webviz.u-strasbg.fr/viz-bin/VizieR?-source=+Hipparcos&-c=Rigel</ref>
===Rigel A===
===Rigel A===
[[Image:Rigel sun comparision.png|thumb|right|250px|Artist rendering of Rigel compared in size to our Sun.]]
Rigel A is classified as a blue-white [[supergiant]] of spectral class B8 Iab. The star contains some 17 times the mass of our [[Sun]]. While the radius of Rigel is estimated to be 74 times that of the Sun, so large, that is Rigel was at the center of our solar system, it would extend to the orbit of [[Mercury]].<ref name="illinois">http://www.astro.illinois.edu/~jkaler/sow/rigel.html</ref> The star has 40,000 times the Sun's visual luminosity.<ref name="illinois">http://www.astro.illinois.edu/~jkaler/sow/rigel.html</ref> Much of Rigel's radiation however, is in the [[ultraviolet]], when this is accounted for, the star's total luminosity is 150,000 times of the Sun's.<ref name="star">http://www.nasa.gov/worldbook/star_worldbook.html</ref>
Rigel A is classified as a blue-white [[supergiant]] of spectral class B8 Iab. The star contains some 17 times the mass of our [[Sun]]. While the radius of Rigel is estimated to be 74 times that of the Sun, so large, that is Rigel was at the center of our solar system, it would extend to the orbit of [[Mercury]].<ref name="illinois">http://www.astro.illinois.edu/~jkaler/sow/rigel.html</ref> The star has 40,000 times the Sun's visual luminosity.<ref name="illinois">http://www.astro.illinois.edu/~jkaler/sow/rigel.html</ref> Much of Rigel's radiation however, is in the [[ultraviolet]], when this is accounted for, the star's total luminosity is 150,000 times of the Sun's.<ref name="star">http://www.nasa.gov/worldbook/star_worldbook.html</ref>