Bellatrix is a star in the constellation of ORION, also known as Gamma Orionis. It is the brightest star in the constellation and one of the brightest stars in the night sky. Bellatrix is a blue-white supergiant star located about 250 light years away from Earth. It is part of the ORION's Belt asterism and is the leftmost star in the belt. Bellatrix is a variable star, meaning its brightness changes over time.