B-type star · blue-white star
HR 6340
HR 6340 is a blue-white star in the constellation Ophiuchus 472 ly from Earth. Its surface is about 10,584 K, about 1.8 times the Sun's surface temperature, and it shines at 55.62× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 472 years ago.
Also catalogued as HD 154204 · HIP 83567
10,584 K
temperature
6.29
apparent magnitude
55.62× ☉
luminosity vs Sun
B7IV/V
spectral type
Distance & comparison with our Sun
472 years
at light speed from Earth
1.83×
as hot as the Sun
55.62×
the Sun's light output
0.49
absolute magnitude
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BINOCULARS NEEDED
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.