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)
195,884 ×
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
Visible to the naked eyeno equipment needed · apparent magnitude 1.3
It pours out about 195,884 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 · Wikidata
It lives in
Milky Way
Barred spiral galaxy.
Other notable stars in the 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 star190,108 ×AlnitakHot blue supergiant250,035 ×VY Canis MajorisRed hypergiant269,774 ×AlnilamBlue supergiant271,019 ×WOH G64Red hypergiant281,838 ×Sanduleak -69° 202Blue supergiant (B3 Ia)100,000 ×
Worlds in the same direction on the sky→