A-type star · white star
25 Her
25 Her is a white star in the constellation Hercules 243 ly from Earth. Its surface is about 8,370 K, about 1.5 times the Sun's surface temperature, and it shines at 29.65× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 243 years ago.
Also catalogued as HR 6123 · HD 148283 · HIP 80460
8,370 K
temperature
5.53
apparent magnitude
29.65× ☉
luminosity vs Sun
A5V
spectral type
Distance & comparison with our Sun
243 years
at light speed from Earth
1.45×
as hot as the Sun
29.65×
the Sun's light output
1.17
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.