B-type star · blue-white star
Theta Hyi
Theta Hyi is a blue-white star in the constellation Hydrus 514 ly from Earth. Its surface is about 12,011 K, about 2.1 times the Sun's surface temperature, and it shines at 136× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 514 years ago.
Also catalogued as HR 939 · HD 19400 · HIP 14131
12,011 K
temperature
5.51
apparent magnitude
136× ☉
luminosity vs Sun
B8III/IV
spectral type
Distance & comparison with our Sun
514 years
at light speed from Earth
2.08×
as hot as the Sun
136×
the Sun's light output
-0.48
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.