HD 208527 is a cool M-dwarf (about 1.60 solar masses, 4,035 K, 51.1 solar radii), 312 light-years from Earth. HD 208527 b is a 9.90-Jupiter-mass companion, with an orbital period of 2.40 years, at 2.100 AU from its star, on an eccentric orbit (e ≈ 0.08), discovered in 2012 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. HD 208527 b circles in the outer system, comparable to the Jupiter region.