Deneb
Blue-white supergiant · Alpha Cygni
One of the most intrinsically luminous stars visible to the naked eye
Deneb is a remote blue-white supergiant that marks the tail of Cygnus the Swan and the head of the Northern Cross, completing the Summer Triangle with Vega and Altair. Despite lying well over a thousand light-years away, it shines as a first-magnitude star thanks to a luminosity among the greatest of any naked-eye star.
Illustration generated from temperature, not a photograph
19.0 ☉
mass (the Sun = 1)
196 thousand ×
as bright as the Sun
8,525 K
surface · white star
203 R☉
radius (the Sun = 1)
1,410 ly
from Earth
1.3
apparent magnitude
It pours out about 196 thousand times the Sun’s light. Its light has been travelling 1,410 years to reach us, so you see Deneb as it was 1,410 years ago.
Source · View on Wikidata
It lives in
Milky Way
Barred spiral galaxy.
Other notable stars in Milky Way
Eta CarinaeLuminous blue variableAlnilamBlue supergiantVY Canis MajorisRed hypergiantAlnitakHot blue supergiantMintakaHot blue giant multiple starAntaresRed supergiant
Stars of similar brightness
MintakaHot blue giant multiple star190 thousand ×AlnitakHot blue supergiant250 thousand ×VY Canis MajorisRed hypergiant270 thousand ×AlnilamBlue supergiant271 thousand ×WOH G64Red hypergiant282 thousand ×Sanduleak -69° 202Blue supergiant (B3 Ia)100 thousand ×
Worlds in the same direction on the sky→