TOI-5789 is an orange K-type dwarf (about 0.82 solar masses, 5,185 K, 0.83 solar radii), 20.5 light-years from Earth. TOI-5789 b is a 2.1-Earth-mass planet, with an orbital period of 2.8 days, at 0.036 AU from its star, and an equilibrium temperature near 1,201 K, discovered in 2026 via radial velocity. TOI-5789 c is a 5.0-Earth-mass planet, with an orbital period of 12.9 days, at 0.101 AU from its star, and an equilibrium temperature near 718 K, on an eccentric orbit (e ≈ 0.07), discovered in 2026 via transit.