B-type star · blue-white star
HR 7239
HR 7239 is a blue-white star in the constellation Sagittarius 845 ly from Earth. Its surface is about 10,448 K, about 1.8 times the Sun's surface temperature, and it shines at 233× the Sun's brightness. At magnitude 6.0 it is bright enough to see with the naked eye; the light you see left it 845 years ago.
Also catalogued as HD 177817 · HIP 93855
10,448 K
temperature
6.00
apparent magnitude
233× ☉
luminosity vs Sun
B7V
spectral type
Distance & comparison with our Sun
845 years
at light speed from Earth
1.81×
as hot as the Sun
233×
the Sun's light output
-1.07
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.