Kepler-27 is a Sun-like G-type star (about 0.65 solar masses, 5,400 K, 0.59 solar radii), 1,044 light-years from Earth. Kepler-27 b is a 9.11-Jupiter-mass companion, with an orbital period of 15.3 days, at 0.118 AU from its star, discovered in 2011 via transit. Kepler-27 c is a 13.8-Jupiter-mass companion, with an orbital period of 31.3 days, at 0.191 AU from its star, discovered in 2011 via transit. Kepler-27 d is a planet with 2.7 Earth radii, with an orbital period of 6.5 days, discovered in 2021 via transit.