KY Cygni facts for kids

Kids Encyclopedia Facts

Sizes of Betelgeuse and KY Cygni

KY Cygni is a red star in the Cygnus constellation. It is one of the largest stars known and with a radius about 1,420 R_☉ (6.6 au). If it was placed at the center of the Solar System, it would extend past the orbit of Jupiter (or Saturn). It is also one of the most luminous stars, with about 300,000 or more times the Sun's luminosity. It is about 5,000 light-years away.

Images for kids

Size comparison of Betelgeuse, Mu Cephei, KY Cygni, and V354 Cephei, according to estimates derived in 2005
A visual band light curve for KY Cygni, plotted from data published by Kochanek et al. (2017)

See also

In Spanish: KY Cygni para niños

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