About this world
Kepler-25 d is a gas giant orbiting Kepler-25, a yellow-white F-type star (type F8) 793 light-years from Earth. It is about 0.89 times the size of Jupiter (its size estimated from its mass) and holds 0.23 Jupiter masses. It completes an orbit every 122 days at 0.42 AU from its star.
Its equilibrium temperature is about 545 K (272 °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 2014 by radial velocity with W. M. Keck Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum. Kepler-25 has 3 known planets; the others are Kepler-25 b and Kepler-25 c.