F-type star · yellow-white star
HR 8099
HR 8099 is a yellow-white star in the constellation Cepheus 159 ly from Earth. Its surface is about 6,956 K, about 1.2 times the Sun's surface temperature, and it shines at 9.20× the Sun's brightness. At magnitude 5.9 it is bright enough to see with the naked eye; the light you see left it 159 years ago.
Also catalogued as HD 201636 · HIP 104171
6,956 K
temperature
5.88
apparent magnitude
9.20× ☉
luminosity vs Sun
F3IV
spectral type
Distance & comparison with our Sun
159 years
at light speed from Earth
1.21×
as hot as the Sun
9.20×
the Sun's light output
2.44
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.