B-type star · blue-white star
29 Per
29 Per is a blue-white star in the constellation Perseus 637 ly from Earth. Its surface is about 11,138 K, about 1.9 times the Sun's surface temperature, and it shines at 287× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 637 years ago.
Also catalogued as HR 987 · HD 20365 · HIP 15404
11,138 K
temperature
5.16
apparent magnitude
287× ☉
luminosity vs Sun
B3V
spectral type
Distance & comparison with our Sun
637 years
at light speed from Earth
1.93×
as hot as the Sun
287×
the Sun's light output
-1.29
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.