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Information About

Alpha Persei




name=Alpha Persei }}
  Epoch J2000
  Ra 03<sup>h</sup> 24<sup>m</sup> 194<sup>s</sup>
  Dec +49&deg 51&prime 40&Prime
  Appmag V 179


  Class F5 Ib
  B-v 048
  U-b 037


  Radial V -2
  Prop Mo Ra 2411
  Prop Mo Dec -2601
  Parallax 551
  P Error 066
  Dist Ly 592
  Dist Pc 181


  Mass 11
  Radius 62
  Luminosity 5,400
  Temperature 7,000
  Metal
  Rotation 18 km/sec





Alpha Persei (α Per) is the brightest Star in the Constellation of Perseus . It also has the traditional names '''Mirfak''' or '''Algenib'''.

It is a yellow Supergiant star, and is a member of a Cluster Of Stars known as the ''Alpha Persei Cluster'', which is easily visible in Binoculars and includes many of the fainter stars of Perseus .

In the Hertzsprung-Russell Diagram , Mirfak lies very close to the region in which Cepheid Variable s are found. It is thus useful in the study of these stars, which are extremely important Standard Candle s.


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