Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Alpha Persei is the brightest star in the constellation of Perseus, just outshining the constellation's best known star Algol. It also bears the traditional names Mirfak and Algenib. A yellow-white supergiant, it lies around 590 light years from Earth and is a member of a cluster of stars known as the Alpha Persei Cluster. With an absolute magnitude of -4.50, its luminosity is 5,000 times and its diameter 62 times that of our Sun. It has a similar spectrum to Procyon, though the latter star is much less luminous.