B-type star · blue-white star

Lambda Cyg

Lambda Cyg is a blue-white star in the constellation Cygnus 769 ly from Earth. Its surface is about 11,295 K, about 2.0 times the Sun's surface temperature, and it shines at 747× the Sun's brightness. At magnitude 4.5 it is bright enough to see with the naked eye; the light you see left it 769 years ago.

769 lybrightness mag 4.53B6IV

Also catalogued as HR 7963 · HD 198183 · HIP 102589

11,295 K
temperature
4.53
apparent magnitude
747× ☉
luminosity vs Sun
B6IV
spectral type
Distance & comparison with our Sun
769 years
at light speed from Earth
1.96×
as hot as the Sun
747×
the Sun's light output
-2.33
absolute magnitude
Explore from here · roam the neighborhood
Lambda CygB-type
Sky regionCygnusthis direction
Star49 Cyg66 ly
StarHD 20046568 ly
StarHR 806371 ly
StarSadrstar
StarAljanahstar
Nearest stars
Bright stars in Cygnus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.5To see it no equipment neededLook toward Cygnus

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.