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Betelgeuse (bēt´əljōōz´), bright star in the constellation Orion; Bayer designation α Orionis; 1992 position R.A. 5h54.8m, Dec. +7°24′. A red supergiant with a luminosity about 13,000 times that of the sun, it is of spectral class M2 Iab. Betelgeuse is a semiregular variable star with apparent magnitude ranging from 0.06 to 0.75; thus, at maximum brightness it is one of the 10 brightest stars in the sky. Betelgeuse marks the right shoulder of Orion; its distance is about 500 light-years.

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Betelgeuse (Alpha Orionis) Red supergiant star, the second-brightest in the constellation of Orion. It is a pulsating variable whose diameter fluctuates between 300 to 400 times that of the Sun. Characteristics: apparent mag. 0.85 (mean); absolute mag. 25.5 (mean); spectral type M2; distance 500 light years.

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Betelgeuseagents provocateurs, berceuse, chanteuse, charmeuse, chartreuse, chauffeuse, coiffeurs, danseuse, diseuse, furze, hers, messieurs, Meuse, secateurs, vendeuse •Betelgeuse • divers

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