KOI-7892 is a Sun-like F-type star (about 1.04 solar masses, 6,474 K, 1.26 solar radii), 1,072 light-years from Earth. Kepler-457 d is a planet with 3.0 Earth radii, with an orbital period of 10.7 days, discovered in 2021 via transit. KIC 8540376 b is a planet with 4.1 Earth radii, with an orbital period of 31.8 days, discovered in 2015 via transit. KIC 8540376 c is a planet with 2.4 Earth radii, with an orbital period of 75.2 days, discovered in 2015 via transit. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.