A-type star · white star

Tau⁷ Eri

Tau⁷ Eri is a white star in the constellation Eridanus 251 ly from Earth. Its surface is about 9,277 K, about 1.6 times the Sun's surface temperature, and it shines at 41.30× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 251 years ago.

251 lybrightness mag 5.24A1V

Also catalogued as HR 1181 · HD 23878 · HIP 17717

9,277 K

temperature

5.24

apparent magnitude

41.30× ☉

luminosity vs Sun

A1V

spectral type

Distance & comparison with our Sun

251 years

at light speed from Earth

1.61×

as hot as the Sun

41.30×

the Sun's light output

0.81

absolute magnitude

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Tau⁷ EriA-type

Sky regionEridanusthis direction

Nearest stars

Bright stars in Eridanus

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VISIBLE TO THE NAKED EYE

Brightness mag 5.2To see it no equipment neededLook toward Eridanus

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.