Alpha Orionis is called Betelgeuse (pronounced BET-ell-juice), one of the most famous yet misunderstood star names. It comes from the Arabic yad al-jauza, often wrongly translated as ‘armpit of the central one'.
Alpha Orionis - Betelgeuse
Alpha Orionis, commonly known as Betelgeuse is a red supergiant star marking the shoulder of the winter constellation Orion the Hunter.
[5972] alpha Orionis or Betelgeuse ("the hand of the central one"), the second brightest star in the constellation, is also the twelfth brightest star in the sky.
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BETELGEUSE (Alpha Orionis). 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.
(pronounced "beetle juice") Betelgeuse (alpha Orionis) is the second-brightest star in the constellation Orion and one of the brightest stars in the sky.
The present brightest variable star is Betelgeuse (Alpha Orionis). [A84]
(b) A star whose light varies. Some variables vary simply because they consist of two stars, one of which eclipses the other; Algol is the most famous example.
Sirius is also the lower left member of the "Winter Triangle" of first magnitude stars, whose other components are Procyon (Alpha Canis Minoris) at upper left and Betegeuse (Alpha Orionis) at right center.
Another point represents Betelgeuse (Alpha Orionis), the ninth brightest star in the sky, a little cooler than Mira but more than 30 times brighter.
The right shoulder Betelgeuse(alpha orionis), is second brightest and is a variable star. It was named during a period of brightness making it appear more luminous than Rigel.
Betelgeuse is the 12th brightest star in the sky. It is called Alpha Orionis even though it is fainter than Beta Orionis (Rigel). This is because Betelgeuse, a variable star, was misclassified. Take a look at the list of the Brightest Stars ...
An old, bright star, much larger and cooler than the Sun. Betelgeuse (alpha Orionis) is an example of a red giant.
Spectral Class (Spectral Type)
A classification scheme that groups stars according to their surface temperatures and spectral features.
This is the first direct image of a star other than the Sun, made with NASA's Hubble Space Telescope. Called Alpha Orionis, or Betelgeuse, ...
Benetnasch Eta Ursae Majoris
Betelgeuse Alpha Orionis
Betria Beta Trianguli Australis
Bharani 41 Arietis
Biham Theta Pegasi
Birdun Epsilon Centauri
Botein Delta Arietis
Brachium Sigma Librae
Bunda Xi Aquarii ...
Orion system
Betelgeuse (Alpha Orionis)
Rigel (Beta Orionis)
Rigel system ...
Although it has the Bayer designation "beta", it is almost always brighter than Alpha Orionis (Betelgeuse). It also has the alternative traditional names Algebar or Elgebar, but these are almost never used.
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.
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.
Prominent bright red giants in the night sky include Aldebaran (Alpha Tauri), Arcturus (Alpha Bootis), and Gamma Crucis (Gacrux), while the even larger Antares (Alpha Scorpii) and Betelgeuse (Alpha Orionis) are red supergiants.
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local region of space Milky Way; the nearest more powerful star is Deneb, as much as 3300 light years (1000 parsecs) down the Orion Arm of the Milky Way galaxy. Although it has the Bayer designation "beta", it is actually brighter than Alpha Orionis ...
An exception to this rule is &alpha Orionis or Betelgeuse. It is in fact fainter than β Ori, Rigel by a small amount.
Examples of well-known stars in the RG phase are Aldebaran (Alpha Tauri) and Mira (Omicron Ceti). More massive Main Sequence stars evolve more quickly and expand further to become Red Super Giants (RSG). Betelgeuse (Alpha Orionis) is a well-known ...
 See also: Orion, Betelgeuse, Star, Sky, Constellation
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