B-type star · blue-white star
HR 490
HR 490 is a blue-white star in the constellation Triangulum 275 ly from Earth. Its surface is about 10,926 K, about 1.9 times the Sun's surface temperature, and it shines at 34.61× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 275 years ago.
Also catalogued as HD 10390 · HIP 7943
10,926 K
temperature
5.63
apparent magnitude
34.61× ☉
luminosity vs Sun
B9IV-V
spectral type
Distance & comparison with our Sun
275 years
at light speed from Earth
1.89×
as hot as the Sun
34.61×
the Sun's light output
1.00
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.