A-type star · white star
HR 7781
HR 7781 is a white star in the constellation Cygnus 295 ly from Earth. Its surface is about 8,857 K, about 1.5 times the Sun's surface temperature, and it shines at 35.42× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 295 years ago.
Also catalogued as HD 193592 · HIP 100097
8,857 K
temperature
5.76
apparent magnitude
35.42× ☉
luminosity vs Sun
A2Vs
spectral type
Distance & comparison with our Sun
295 years
at light speed from Earth
1.53×
as hot as the Sun
35.42×
the Sun's light output
0.98
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.