KY Cygni
Star
KY Cygni is a red supergiant of spectral class M3.5Ia located in the constellation Cygnus. It is approximately 5,000 light-years away. Wikipedia
Mass: 4.972 × 10^31 kg (25 M☉)
Radius: 650 million mi
Surface temperature: 3,500 K
Luminosity: 273,000 L☉
Distance to Earth: 5,153 light years
Magnitude: 10.57
Constellation: Cygnus