A-type star · white star

81 Tau

81 Tau is a white star in the constellation Taurus 147 ly from Earth. Its surface is about 7,740 K, about 1.3 times the Sun's surface temperature, and it shines at 11.40× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 147 years ago.

147 lybrightness mag 5.47Am

Also catalogued as HR 1428 · HD 28546 · HIP 21039

7,740 K

temperature

5.47

apparent magnitude

11.40× ☉

luminosity vs Sun

spectral type

Distance & comparison with our Sun

147 years

at light speed from Earth

1.34×

as hot as the Sun

11.40×

the Sun's light output

2.21

absolute magnitude

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81 TauA-type

Sky regionTaurusthis direction

Nearest stars

Bright stars in Taurus

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VISIBLE TO THE NAKED EYE

Brightness mag 5.5To see it no equipment neededLook toward Taurus

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.