GJ 1151 is a cool M-dwarf (about 0.16 solar masses, 3,280 K, 0.18 solar radii), 8.0 light-years from Earth. GJ 1151 c is a 10.6-Earth-mass planet, with an orbital period of 1.07 years, at 0.571 AU from its star, discovered in 2023 via radial velocity. The planet betrayed itself through the star's reflex motion — a technique that first revealed worlds around Sun-like stars in the 1990s and remains a workhorse of exoplanet discovery. GJ 1151 c circles its star within the inner habitable zone.