B-type star · blue-white star
55 Hya
55 Hya is a blue-white star in the constellation Hydra 743 ly from Earth. Its surface is about 10,695 K, about 1.9 times the Sun's surface temperature, and it shines at 258× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 743 years ago.
Also catalogued as HR 5514 · HD 130158 · HIP 72323
10,695 K
temperature
5.61
apparent magnitude
258× ☉
luminosity vs Sun
B9IV/V
spectral type
Distance & comparison with our Sun
743 years
at light speed from Earth
1.85×
as hot as the Sun
258×
the Sun's light output
-1.18
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.