Mirach Beta Andromedae

Stellar classification



  • X -139
  • Y -89
  • Z -108
→ Sol: 197

Object type

  • High proper-motion Star
  • Star
  • Double or multiple star
  • Infra-Red source
  • UV-emission source
  • Variable Star
simbad:* bet And


Beta Andromedae (β Andromedae, abbreviated Beta And, β And), also named Mirach, is a prominent star in the northern constellation of Andromeda. It is located northeast of the Great Square of Pegasus and is theoretically visible to all observers north of 54° S. It is commonly used by stargazers to find the Andromeda Galaxy. The galaxy NGC 404, also known as Mirach's Ghost, is visible seven arc-minutes away.

This star has an average apparent visual magnitude of 2.05, which makes it the brightest star in the constellation. However, the luminosity varies slightly from magnitude +2.01 to +2.10. Based upon parallax measurements, it is located at a distance of roughly 197 light-years (60 parsecs) from the Sun. The apparent magnitude of this star is reduced by 0.06 from extinction caused by the gas and dust along the line of sight.

This article uses material from the Wikipedia article "Beta Andromedae", which is released under the Creative Commons Attribution-Share-Alike License 3.0.