Alpha Arietis (α Ari, α Arietis) is the Bayer designation for the brightest star in the northern zodiacal constellation of Aries.[3][10] It has the traditional name Hamal, which comes from the Arabic phrase for "head of the ram", and the Flamsteed designation of 13 Arietis. With an apparent visual magnitude of 2.0,[2] it among the brightest stars in the night sky. Based upon parallax measurements made with Hipparcos astrometry satellite,[11][12] α Arietis is about 65.8 light-years (20.2 parsecs) from Earth.[1] It is a giant star that may host an orbiting planet with a mass greater than Jupiter.[8]

Excerpt from Wikipedia.