About Kepler-223 b
Kepler-223 b is a rare exoplanet. It lies about 6,065.6 light-years from Earth, shines at apparent magnitude 15.69, has an equilibrium temperature near 1,042 K and spans roughly 2.99 Earth radii.
It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.