cohort. n. 1. (Military) one of the ten units of between 300 and 600 men in an ancient Roman Legion. 2. any band of warriors or associates: the cohorts of Satan. 3.
As an early M-type supergiant, Betelgeuse is one of the largest, most luminous and yet one of the most ethereal stars known. A radius of 5.5 AU is roughly 7003118000000000000â 1180 times the radius of the Sunâable to contain over 2 quadrillion Earths (2.15 Ã 1015) or more than 1.6 billion (1.65 Ã 109) Suns.
Betelgeuse or Alpha Orionis (Alp Ori) is the 2nd brightest naked eye star in the constellation Orion. With an apparent magnitude of 0.45v, Betelgeuse is the 9th brightest star in the entire sky (see: 50 Brightest Stars ). Its absolute magnitude is -5.14 and its distance is 428 light years. The Equinox J2000 equatorial coordinates are RA = 05h 55m 10.3s, Dec = +07Â° 24' 25.