HD 45184 is a Sun-like G-type star (about 1.03 solar masses, 5,869 K), 22.0 light-years from Earth. HD 45184 b is a 12.2-Earth-mass planet, with an orbital period of 5.9 days, at 0.064 AU from its star, on an eccentric orbit (e ≈ 0.07), discovered in 2019 via radial velocity. HD 45184 c is a 8.8-Earth-mass planet, with an orbital period of 13.1 days, at 0.110 AU from its star, on an eccentric orbit (e ≈ 0.07), discovered in 2019 via radial velocity. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.