B-type star · blue-white star
8 Cyg
8 Cyg is a blue-white star in the constellation Cygnus 861 ly from Earth. Its surface is about 12,489 K, about 2.2 times the Sun's surface temperature, and it shines at 771× the Sun's brightness. At magnitude 4.7 it is bright enough to see with the naked eye; the light you see left it 861 years ago.
Also catalogued as HR 7426 · HD 184171 · HIP 96052
12,489 K
temperature
4.74
apparent magnitude
771× ☉
luminosity vs Sun
B3IV
spectral type
Distance & comparison with our Sun
861 years
at light speed from Earth
2.16×
as hot as the Sun
771×
the Sun's light output
-2.37
absolute magnitude
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VISIBLE TO THE NAKED EYE
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.