About this world
HD 17674 b is a gas giant orbiting HD 17674, a yellow, Sun-like star (type G0V) 145 light-years from Earth. It is about 1.2 times the size of Jupiter (its size estimated from its mass), with at least 0.87 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 624 days at 1.4 AU from its star.
Its equilibrium temperature is about 260 K (−14 °C), which places it in the conservative 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 2017 by radial velocity with Haute-Provence Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.