About this world
HIP 57274 b is a gas giant orbiting HIP 57274, an orange dwarf (type K4V) 84.3 light-years from Earth. It is about 1.1 times the size of Jupiter (its size estimated from its mass) and holds 11 Jupiter masses. It completes an orbit every 8.14 days at 0.07 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 726 K (453 °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 2011 by radial velocity with W. M. Keck Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum. HIP 57274 has 3 known planets; the others are HIP 57274 c and HIP 57274 d.