A-type star · white star
Theta Ari
Theta Ari is a white star in the constellation Aries 447 ly from Earth. Its surface is about 9,990 K, about 1.7 times the Sun's surface temperature, and it shines at 96.03× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 447 years ago.
Also catalogued as HR 669 · HD 14191 · HIP 10732
9,990 K
temperature
5.58
apparent magnitude
96.03× ☉
luminosity vs Sun
A1Vn
spectral type
Distance & comparison with our Sun
447 years
at light speed from Earth
1.73×
as hot as the Sun
96.03×
the Sun's light output
-0.11
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.