About this world
MOA-2015-BLG-337L b is a Neptune-like planet orbiting MOA-2015-BLG-337L, a star 23.2 thousand light-years from Earth. It is about 0.57 times the size of Jupiter (its size estimated from its mass) and holds 0.11 Jupiter masses.
At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2018 by microlensing with MOA. A foreground star's gravity magnifies a background star; a planet adds a blip.