Beta Orionis (Rigel) has a 10.4 visual magnitude companion at 202º and a wide 9.5" separation. This is a fixed system.
Lambda Orionis (between Betelgeuse and Bellatrix) is another fixed binary, with a 5.5 companion at PA 43º and 4.4" away.
Rigel(beta orionis)the left foot, the sixth brightest star in the sky, is actually the brightest star in the constellation.
Rigel is part of the winter circle asterism.
Rigel (beta Orionis) is the brightest star in the and one of the brightest stars in the sky. It is a blue (very hot) , over 60 million miles in diameter (almost 100 times bigger than the sun). It is more than 50,000 times more luminous than the .
Rigel (beta Orionis) is the brightest star in the constellation Orion and one of the brightest stars in the sky. It is a blue (very hot) supergiant, over 60 million miles in diameter (almost 100 times bigger than the sun).
The great star Betelgeuse is one of the two that dominate mighty Orion of northern winter, the other Rigel, the pair respectively also called Alpha and Beta Orionis.
(r´jl), bright star in the constellation Orion; Bayer designation Beta Orionis; 1992 position R.A. 5h14.2m, Dec. −8°13&minut;.
Although it has the Bayer designation "alpha", it is not as bright as Rigel (Beta Orionis). It is a vertex of the Winter Triangle asterism.
[5971] beta Orionis or Rigel ("the foot"), the brightest star in Orion, is the sixth brightest star in the sky. It is a blue supergiant located at Orion's left foot.
Rigel is the 7th brightest star in the sky. It is called Beta Orionis even though it is brighter than Alpha Orionis (Betelgeuse). This is because Betelgeuse, a variable star, was misclassified. Take a look at the list of the Brightest Stars ...
The star can be found: west of Zaurak (Gamma Eridani); southwest of Cursa (Beta Eridani) and Rigel (Beta Orionis); northwest of Mu, Alpha (Arneb), and Beta Leporis (Nihal); and southeast of Keid and Beid (Omicron2 and Omicron1 Eridani, respectively).
For example, Rigel (Beta Orionis) is actually slightly brighter than Betelgeuse (Alpha Orionis), and Kappa Orionis is considerably brighter than the position of Kappa in the Greek alphabet would suggest.
There are the common names - Rigel, Sirius, Betelgeuse, Vega, etc - and there are the "scientific" names - Beta Orionis, Alpha Canis Majoris, Alpha Orionis, Alpha Lyrae.
The brightest star in Orion is actually Beta Orionis, called Rigel from the Arabic rijl meaning ‘foot' since Ptolemy described it as marking the left foot of Orion. Rigel is a brilliant blue-white supergiant.
Orion system
Betelgeuse (Alpha Orionis)
Rigel (Beta Orionis)
Rigel system ...
Examples would be alpha Cancri, beta Orionis, and RU Lupi.
"Visibility" refers to when the constellation would be visible in the evening sky as seen from Iowa.
Regulus Alpha Leonis
Rigel Beta Orionis
Rigil Kentaurus Alpha Centauri
Rijl al Awwa Mu Virginis
Rotanev Beta Delphini
Ruchba Omega-2 Cygni
Ruchbah Delta Cassiopeiae
Rukbat Alpha Sagittarii
Rukh Delta Cygni ...
It is the second brightest star in the constellation Orion, and the tenth brightest star in the night sky. Although it has the Bayer designation "alpha", it is not as bright as Rigel (Beta Orionis). It is a vertex of the Winter Triangle asterism.
On the celestial equator. One of the 3 that make up the "Winter Triangle" (Sirius, Procyon, and Betelgeuse). Although it has the Bayer designation "alpha", it is not as bright as Rigel (Beta Orionis).
Greek letter (Alpha, Beta, Gamma, Delta, Epsilon...) in an approximate order of decreasing brightness for stars in the constellation. The adjacent figure illustrates for Orion. Betelgeuse is also called Alpha-Orionis and Rigel is called Beta Orionis ...
 See also: Rigel, Orion, Star, Sky, Betelgeuse
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