K-type star · orange
HR 7780
HR 7780 is an orange in the constellation Sagitta 545 ly from Earth. Its surface is about 3,794 K, about 0.7 times the Sun's surface temperature, and it shines at 114× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 545 years ago.
Also catalogued as HD 193579 · HIP 100276
3,794 K
temperature
5.82
apparent magnitude
114× ☉
luminosity vs Sun
K5III
spectral type
Distance & comparison with our Sun
545 years
at light speed from Earth
0.66×
as hot as the Sun
114×
the Sun's light output
-0.30
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.