K-type star · orange
HR 6739
HR 6739 is an orange in the constellation Sagittarius 344 ly from Earth. Its surface is about 4,389 K, about 0.8 times the Sun's surface temperature, and it shines at 39.37× the Sun's brightness. At magnitude 6.0 it is bright enough to see with the naked eye; the light you see left it 344 years ago.
Also catalogued as HD 164870 · HIP 88550
4,389 K
temperature
5.98
apparent magnitude
39.37× ☉
luminosity vs Sun
K2III
spectral type
Distance & comparison with our Sun
344 years
at light speed from Earth
0.76×
as hot as the Sun
39.37×
the Sun's light output
0.86
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.