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.
Dec. - 7 degrees, 24'. Since Betelgeuse is north of the ecliptic, the declination is a positive value. Betelgeuse is at b, but the brightest star in Orion is Rigel, which is elsewhere. Bayer didn't always get his letters straight, or possibly one of the two has changed since then. In this case Î² Orionis is brighter than Î±.