F-type star · yellow-white star
HR 8157
HR 8157 is a yellow-white star in the constellation Cygnus 2,160 ly from Earth. Its surface is about 6,366 K, about 1.1 times the Sun's surface temperature, and it shines at 1,683× the Sun's brightness. At magnitude 5.9 it is bright enough to see with the naked eye; the light you see left it 2,160 years ago.
Also catalogued as HD 203156 · HIP 105269
6,366 K
temperature
5.89
apparent magnitude
1,683× ☉
luminosity vs Sun
F2Ib
spectral type
Distance & comparison with our Sun
2,160 years
at light speed from Earth
1.10×
as hot as the Sun
1,683×
the Sun's light output
-3.21
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.