Скачать или смотреть [Wikipedia] KY Cygni

KY Cygni is a red supergiant of spectral class M3.5Ia located in the constellation Cygnus. It is one of the largest stars known, Its value is very poorly known, Its estimated size is 1,420 R☉ (990,000,000 km; 6.6 au) or (up to 2,850 R☉ (1.98×109 km; 13.3 au) by some estimates). If It is placed at the center of the Solar System, it would extend past the orbit of Jupiter (or Saturn). And it's also one of the most luminous, with about 300,000 or more times the Sun's luminosity. It is approximately 5,000 light-years away.

https://en.wikipedia.org/wiki/KY_Cygni

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