Kepler-178 is a Sun-like G-type star (about 0.85 solar masses, 5,676 K, 1.07 solar radii), 716 light-years from Earth. Kepler-178 b is a planet with 2.9 Earth radii, with an orbital period of 9.6 days, at 0.085 AU from its star, discovered in 2014 via transit. Kepler-178 c is a planet with 2.9 Earth radii, with an orbital period of 20.6 days, at 0.142 AU from its star, discovered in 2014 via transit. Kepler-178 d is a planet with 4.0 Earth radii, with an orbital period of 96.7 days, at 0.397 AU from its star, discovered in 2014 via transit.