HD 101930 is an orange K-type dwarf (about 0.57 solar masses, 5,108 K, 0.86 solar radii), 30.0 light-years from Earth. HD 101930 b is a 0.25-Jupiter-mass companion, with an orbital period of 70.5 days, at 0.300 AU from its star, on an eccentric orbit (e ≈ 0.11), discovered in 2005 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. The planet's marked eccentricity suggests past scattering events or perturbations from unseen companions.