B-type star · blue-white star
HR 6870
HR 6870 is a blue-white star in the constellation Sagittarius 557 ly from Earth. Its surface is about 11,938 K, about 2.1 times the Sun's surface temperature, and it shines at 187× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 557 years ago.
Also catalogued as HD 168733 · HIP 90074
11,938 K
temperature
5.33
apparent magnitude
187× ☉
luminosity vs Sun
B7Ib/II
spectral type
Distance & comparison with our Sun
557 years
at light speed from Earth
2.07×
as hot as the Sun
187×
the Sun's light output
-0.83
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.