B-type star · blue-white star
21 Vir
21 Vir is a blue-white star in the constellation Virgo 258 ly from Earth. Its surface is about 10,584 K, about 1.8 times the Sun's surface temperature, and it shines at 35.16× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 258 years ago.
Also catalogued as HR 4781 · HD 109309 · HIP 61318
10,584 K
temperature
5.48
apparent magnitude
35.16× ☉
luminosity vs Sun
A0V
spectral type
Distance & comparison with our Sun
258 years
at light speed from Earth
1.83×
as hot as the Sun
35.16×
the Sun's light output
0.98
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.