Stellar classification



  • X -384
  • Y 32
  • Z 201
→ Sol: 435

Object type

  • Double or multiple star
  • Star
  • Star in double system
  • Infra-Red source
  • Variable Star
simbad:* bet Cyg A


Albireo is the traditional name for the double star also designated Beta Cygni (β Cygni, abbreviated Beta Cyg, β Cyg), although the International Astronomical Union now regards the name as only applying to the brightest component. Despite being designated 'beta', it is fainter than Gamma Cygni, Delta Cygni, and Epsilon Cygni and is the fifth-brightest point of light in the constellation of Cygnus. Appearing to the naked eye to be a single star of magnitude 3, viewing through even a low-magnification telescope resolves it into its two components. The brighter yellow star (actually itself a very close binary system) makes a striking colour contrast with its fainter blue companion.

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