Kepler-20

Kepler-20 is a star about 934 light-years (286 parsecs) from Earth in the constellation Lyra with a system of at least five, and possibly six, known planets.

The effective temperature of the photosphere is slightly cooler than that of the Sun at 5466 K, giving it the characteristic yellow hue of a stellar class G8 star.

[7][8] The abundance of elements other than hydrogen or helium, what astronomers term the metallicity, is approximately the same as in the Sun.

[9] On December 20, 2011, the Kepler Space Telescope team reported the discovery of a five-planet system containing three small gas giants and the first two Earth-sized extrasolar planets, Kepler-20e (the first known extrasolar planet smaller than Earth orbiting a main-sequence star)[10] and Kepler-20f, orbiting a Sun-like star.

[4] A 2016 study detected a sixth planet in the system based on radial velocity observations.