B-type star · blue-white star
Tau⁹ Eri
Tau⁹ Eri is a blue-white star in the constellation Eridanus 327 ly from Earth. Its surface is about 11,938 K, about 2.1 times the Sun's surface temperature, and it shines at 125× the Sun's brightness. At magnitude 4.6 it is bright enough to see with the naked eye; the light you see left it 327 years ago.
Also catalogued as HR 1240 · HD 25267 · HIP 18673
11,938 K
temperature
4.62
apparent magnitude
125× ☉
luminosity vs Sun
Ap Si
spectral type
Distance & comparison with our Sun
327 years
at light speed from Earth
2.07×
as hot as the Sun
125×
the Sun's light output
-0.39
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.