The table shows data for the six planets in the Kepler-11 star system. Kepler-11 is one of many star systems discovered by space satellites. Scientists find this system unusual because of its small size and its six planets, identified by letters b through g, that orbit relatively close to its central star. The central star, Kepler-11, has a surface temperature of 5663 K and a luminosity of 1.0.

9. Describe the relationship between a planet’s mean distance from this star and the period of revolution.