Alpha Cygni Deneb

Stellar classification



  • X -1405
  • Y 46
  • Z 133
→ Sol: 1,412

Object type

  • Supergiant
  • Star
  • Double or multiple star
  • Emission-line Star
  • Infra-Red source
  • Pulsating variable Star
  • UV-emission source
  • Variable Star
simbad:* alf Cyg


Deneb (), also designated α Cygni (Latinised alpha Cygni, abbreviated Alpha Cyg, α Cyg), is the brightest star in the constellation of Cygnus. It is one of the vertices of the asterism known as the Summer Triangle and forms the 'head' of the Northern Cross. It is the 19th brightest star in the night sky, with an apparent magnitude of 1.25. A blue-white supergiant, Deneb is also one of the most luminous stars. However, its exact distance (and hence luminosity) has been difficult to calculate; it is estimated to be somewhere between 55,000 and 196,000 times as luminous as the Sun.

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