A-type star · white star
HR 1139
HR 1139 is a white star in the constellation Eridanus 138 ly from Earth. Its surface is about 8,041 K, about 1.4 times the Sun's surface temperature, and it shines at 9.10× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 138 years ago.
Also catalogued as HD 23281 · HIP 17395
8,041 K
temperature
5.59
apparent magnitude
9.10× ☉
luminosity vs Sun
A5m
spectral type
Distance & comparison with our Sun
138 years
at light speed from Earth
1.39×
as hot as the Sun
9.10×
the Sun's light output
2.45
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.