Write any three features of Ursa major, Orion and Star

Ursa majorThe constellation Ursa Major contains the group of stars commonly called the Big Dipper. The handle of the Dipper is the Great Bear's tail and the Dipper's cup is the Bear's flank. The Big Dipper is not a constellation itself, but an asterism, which is a distinctive group of stars. Orion :—Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky. Its brightest stars are blue-white Rigel and red Betelgeuse.Star :—A star's color depends on its surface temperatureSurface TemperatureSize