K-type star · orange
20 Hya
20 Hya is an orange in the constellation Hydra 482 ly from Earth. Its surface is about 4,738 K, about 0.8 times the Sun's surface temperature, and it shines at 123× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 482 years ago.
Also catalogued as HR 3641 · HD 78732 · HIP 44961
4,738 K
temperature
5.47
apparent magnitude
123× ☉
luminosity vs Sun
G8II
spectral type
Distance & comparison with our Sun
482 years
at light speed from Earth
0.82×
as hot as the Sun
123×
the Sun's light output
-0.38
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.