About this world
Kepler-47 d is a Neptune-like planet orbiting Kepler-47, a yellow, Sun-like star 3.34 thousand light-years from Earth. It is about 0.63 times the size of Jupiter and holds 0.06 Jupiter masses. It completes an orbit every 187 days at 0.7 AU from its star.
Its equilibrium temperature is about 314 K (41 °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 2019 by transit with Kepler. A planet crosses its star and dims it by a tiny, periodic fraction. Kepler-47 has 3 known planets; the others are Kepler-47 b and Kepler-47 c.