HD 143811 A is a Sun-like F-type star (about 1.32 solar masses, 6,791 K), 137 light-years from Earth. HD 143811 AB b is a 6.10-Jupiter-mass companion, with an orbital period of 320 years, at 63.0 AU from its star, on an eccentric orbit (e ≈ 0.19), discovered in 2025 via direct imaging. Direct imaging revealed these planets because they are young, massive, and widely separated from their star, appearing bright in infrared light against the glare. The planet's marked eccentricity suggests past scattering events or perturbations from unseen companions.