About this world
KMT-2023-BLG-1866L b is a super-Earth orbiting KMT-2023-BLG-1866L, a star 20.3 thousand light-years from Earth. It is about 1.4 times the size of Earth (its size estimated from its mass) and holds 2.6 Earth masses.
It was discovered in 2024 by microlensing with KMTNet. A foreground star's gravity magnifies a background star; a planet adds a blip.