B-type star · blue-white star
HR 4123
HR 4123 is a blue-white star in the constellation Hydra 523 ly from Earth. Its surface is about 10,488 K, about 1.8 times the Sun's surface temperature, and it shines at 130× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 523 years ago.
Also catalogued as HD 91120 · HIP 51491
10,488 K
temperature
5.59
apparent magnitude
130× ☉
luminosity vs Sun
B8/B9IV/V
spectral type
Distance & comparison with our Sun
523 years
at light speed from Earth
1.82×
as hot as the Sun
130×
the Sun's light output
-0.43
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.