About this world
GJ 3341 b is a sub-Neptune orbiting GJ 3341, a cool red dwarf (type M2.5) 77 light-years from Earth. It is about 2.5 times the size of Earth (its size estimated from its mass), with at least 6.6 Earth masses (a minimum, measured by radial velocity). It completes an orbit every 14.2 days at 0.089 AU from its star, closer than Mercury is to the Sun, on a strongly elongated orbit (e = 0.31).
Its equilibrium temperature is about 378 K (104 °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 2015 by radial velocity with La Silla Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.