F-type star · yellow-white star
55 Cyg
55 Cyg is a yellow-white star in the constellation Cygnus 2,330 ly from Earth. Its surface is about 6,083 K, about 1.1 times the Sun's surface temperature, and it shines at 5,292× the Sun's brightness. At magnitude 4.8 it is bright enough to see with the naked eye; the light you see left it 2,330 years ago.
Also catalogued as HR 7977 · HD 198478 · HIP 102724
6,083 K
temperature
4.81
apparent magnitude
5,292× ☉
luminosity vs Sun
B3Ia
spectral type
Distance & comparison with our Sun
2,330 years
at light speed from Earth
1.05×
as hot as the Sun
5,292×
the Sun's light output
-4.46
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.