About this world
HIP 105854 b is a gas giant orbiting HIP 105854, a giant star (type K2III) 256 light-years from Earth. It is about 1.1 times the size of Jupiter (its size estimated from its mass), with at least 8.2 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 184 days at 0.81 AU from its star.
Its equilibrium temperature is about 822 K (549 °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 Multiple Observatories. The star wobbles toward and away from us, Doppler-shifting its spectrum.