About Kepler-1210 b
Kepler-1210 b is a rare exoplanet. It lies about 3,837.3 light-years from Earth, shines at apparent magnitude 15.65, has an equilibrium temperature near 856 K and spans roughly 1.7 Earth radii.
It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.