Deneb - α Cygni (alpha Cygni)
Deneb, also designated as α Cygni (alpha Cygni), is a variable and double supergiant star of spectral class A2 in the constellation of Cygnus.
Deneb visual magnitude is 1.25, making it the 18th brightest star in the sky. Because of its brightness, Deneb is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Deneb is situated in the Hertzsprung–Russell diagram.
Star System Properties
Deneb is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Deneb double sysyem:
Distance, Radial Speed, Proper Motion
Deneb is distant 3,227.72 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.
Alternative Designations
Visibility from Your Location
Deneb - α Cygni (alpha Cygni) is circumpolar and transits at 04:49 UTC (altitude: 83.9°)