HD 133131 A is a Sun-like G-type star (about 0.95 solar masses, 5,799 K), 51.5 light-years from Earth. HD 133131 A b is a 1.42-Jupiter-mass companion, with an orbital period of 1.78 years, at 1.440 AU from its star, on an eccentric orbit (e ≈ 0.33), discovered in 2016 via radial velocity. HD 133131 A c is a 0.42-Jupiter-mass companion, with an orbital period of 9.77 years, at 4.490 AU from its star, on an eccentric orbit (e ≈ 0.49), discovered in 2016 via radial velocity.