A-type star · white star
21 Psc
21 Psc is a white star in the constellation Pisces 304 ly from Earth. Its surface is about 8,428 K, about 1.5 times the Sun's surface temperature, and it shines at 37.15× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 304 years ago.
Also catalogued as HR 9022 · HD 223438 · HIP 117491
8,428 K
temperature
5.77
apparent magnitude
37.15× ☉
luminosity vs Sun
A5m
spectral type
Distance & comparison with our Sun
304 years
at light speed from Earth
1.46×
as hot as the Sun
37.15×
the Sun's light output
0.93
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.