K2-183 is a Sun-like G-type star (about 0.94 solar masses, 5,482 K, 0.87 solar radii), 329 light-years from Earth. K2-183 b is a planet with 1.1 Earth radii, with an orbital period of 11.3 hours, discovered in 2018 via transit. K2-183 c is a planet with 2.3 Earth radii, with an orbital period of 10.8 days, discovered in 2018 via transit. K2-183 d is a planet with 2.3 Earth radii, with an orbital period of 22.6 days, discovered in 2018 via transit. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.