B-type star · blue-white star
Mesarthim
Mesarthim is a blue-white star in the constellation Aries 164 ly from Earth. Its surface is about 10,752 K, about 1.9 times the Sun's surface temperature, and it shines at 61.83× the Sun's brightness. At magnitude 3.9 it is bright enough to see with the naked eye; the light you see left it 164 years ago.
Also catalogued as Gamma² Ari · HR 546 · HD 11502 · HIP 8832
10,752 K
temperature
3.88
apparent magnitude
61.83× ☉
luminosity vs Sun
A1p Si
spectral type
Distance & comparison with our Sun
164 years
at light speed from Earth
1.86×
as hot as the Sun
61.83×
the Sun's light output
0.37
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.