F-type star · yellow-white star
20 Per
20 Per is a yellow-white star in the constellation Perseus 230 ly from Earth. Its surface is about 6,760 K, about 1.2 times the Sun's surface temperature, and it shines at 31.80× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 230 years ago.
Also catalogued as HR 855 · HD 17904 · HIP 13490
6,760 K
temperature
5.34
apparent magnitude
31.80× ☉
luminosity vs Sun
F4Vvar
spectral type
Distance & comparison with our Sun
230 years
at light speed from Earth
1.17×
as hot as the Sun
31.80×
the Sun's light output
1.09
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.