Kepler-19Kepler-19 is a G7V star that is host to three known planets - Kepler-19b, Kepler-19c, and Kepler-19d. It is located about away in the constellation Lyra, five arcminutes northwest of the much more distant open cluster NGC 6791.Planetary systemThere are three known planets in the Kepler-19 planetary system. Planet b was discovered by the transit method, c by transit-timing variations and d by radial velocity measurements.