A-type star · white star
HR 7491
HR 7491 is a white star in the constellation Sagittarius 636 ly from Earth. Its surface is about 9,894 K, about 1.7 times the Sun's surface temperature, and it shines at 116× the Sun's brightness. At magnitude 6.1 it is within reach of 50 mm binoculars; the light you see left it 636 years ago.
Also catalogued as HD 186042 · HIP 97067
9,894 K
temperature
6.14
apparent magnitude
116× ☉
luminosity vs Sun
B8IV/V
spectral type
Distance & comparison with our Sun
636 years
at light speed from Earth
1.71×
as hot as the Sun
116×
the Sun's light output
-0.31
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.