B-type star · blue-white star

Tau¹ Ari

Tau¹ Ari is a blue-white star in the constellation Aries 509 ly from Earth. Its surface is about 11,046 K, about 1.9 times the Sun's surface temperature, and it shines at 165× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 509 years ago.

509 lybrightness mag 5.27B5IV

Also catalogued as HR 1005 · HD 20756 · HIP 15627

11,046 K

temperature

5.27

apparent magnitude

165× ☉

luminosity vs Sun

B5IV

spectral type

Distance & comparison with our Sun

509 years

at light speed from Earth

1.91×

as hot as the Sun

165×

the Sun's light output

-0.70

absolute magnitude

Explore from here · roam the neighborhood

Tau¹ AriB-type

Sky regionAriesthis direction

Nearest stars

Bright stars in Aries

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VISIBLE TO THE NAKED EYE

Brightness mag 5.3To see it no equipment neededLook toward Aries

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.