About this world
HD 16141 b is a gas giant orbiting HD 16141, a yellow, Sun-like star (type G5IV) 123 light-years from Earth. It is about 0.97 times the size of Jupiter (its size estimated from its mass), with at least 0.26 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 75.5 days at 0.36 AU from its star, closer than Mercury is to the Sun, on a strongly elongated orbit (e = 0.25).
Its equilibrium temperature is about 563 K (290 °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 2000 by radial velocity with W. M. Keck Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.