About this world
EPIC 212297394 c is a sub-Neptune orbiting EPIC 212297394, an orange dwarf 1.36 thousand light-years from Earth. It is about 2.3 times the size of Earth. It completes an orbit every 5.21 days at 0.055 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 866 K (593 °C): far too hot for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2021 by transit with K2. A planet crosses its star and dims it by a tiny, periodic fraction. EPIC 212297394 has 2 known planets; the others are EPIC 212297394 b.