About this world
KOINTREAU-4 b is a gas giant orbiting 2MASS J16262785-2625152, a cool red dwarf (type M4.5) 474 light-years from Earth. It is about 1.1 times the size of Jupiter (its size estimated from its mass) and holds 15 Jupiter masses.
At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2026 by direct imaging with W. M. Keck Observatory. The planet itself is photographed, its star blocked by a coronagraph.