About this world
gam Cep b is a gas giant orbiting gam Cep, a giant star (type K1III-I) 46 light-years from Earth. It is about 1.1 times the size of Jupiter (its size estimated from its mass) and holds 9.4 Jupiter masses. It completes an orbit every 2.48 years at 2 AU from its star.
Its equilibrium temperature is about 356 K (83 °C): too cold for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2003 by radial velocity with Multiple Observatories. The star wobbles toward and away from us, Doppler-shifting its spectrum.