About this world
Kepler-315 c is a Neptune-like planet orbiting Kepler-315, a yellow, Sun-like star 3.79 thousand light-years from Earth. It is about 4.2 times the size of Earth. It completes an orbit every 265 days at 0.79 AU from its star.
Its equilibrium temperature is about 291 K (18 °C), which places it in the optimistic habitable zone: the band where liquid water could exist on a rocky surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2014 by transit with Kepler. A planet crosses its star and dims it by a tiny, periodic fraction. Kepler-315 has 2 known planets; the others are Kepler-315 b.