Kepler-277 is a large yellow star about 961pc10pc in the constellation of Lyra. It is 1.69 and 1.12, with a temperature of 5946 K, a metallicity of -0.315 [Fe/H], and an unknown age. For comparison, the Sun has a temperature of 5778 K, a metallicity of 0.00 [Fe/H], and an age of about 4.5 billion years. The large radius in comparison to its mass and temperature suggest that Kepler-277 could be a subgiant star.
See main article: Kepler-277b. Kepler-277b (KOI-1215.01) is the second most massive and third-largest rocky planet ever discovered, with a mass close to that of Saturn. It was discovered in 2014. Kepler-277b orbits close to its host star, with one orbit lasting 17.324 days.
See main article: Kepler-277c. Kepler-277c (KOI-1215.02) is the third most massive and second-largest rocky planet ever discovered, with a mass about 64 times that of Earth. It was discovered in 2014. Kepler-277c orbits close to its host star, with one orbit lasting 33.006 days.