Alpha Cephei is a bright star located in the constellation Cepheus. It is classified as a type A giant star, approximately 45 light-years away from Earth. With a magnitude of about 3.6, it is one of the more prominent stars in its constellation. This star is also known by its traditional name, Alderamin, which means "the right arm" in Arabic. Alpha Cephei is notable for its relatively fast rotation and is part of a group of stars that are often studied for their properties and behavior in the universe.