WASP-127 is a Sun-like G-type star (about 0.95 solar masses, 5,620 K, 1.33 solar radii), 160 light-years from Earth. WASP-127 b is a 0.16-Jupiter-mass companion, with an orbital period of 4.2 days, at 0.048 AU from its star, discovered in 2016 via transit. The planet was found when it crossed the face of its star, producing periodic dips in brightness that reveal its size and orbital period to space-based photometry. WASP-127 b skims its star closer than Mercury orbits the Sun. The planet's large radius (14.7 Earth radii) indicates a bloated atmosphere heated by intense stellar radiation.