HD 51608 is a Sun-like G-type star (about 0.80 solar masses, 5,358 K), 35.1 light-years from Earth. HD 51608 b is a 12.8-Earth-mass planet, with an orbital period of 14.1 days, at 0.106 AU from its star, on an eccentric orbit (e ≈ 0.09), discovered in 2019 via radial velocity. HD 51608 c is a 14.3-Earth-mass planet, with an orbital period of 95.9 days, at 0.381 AU from its star, on an eccentric orbit (e ≈ 0.14), discovered in 2019 via radial velocity. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.