Planet Kepler-20e (IMAGE) Center for Astrophysics | Harvard & Smithsonian Caption Kepler-20e is the smallest planet found to date orbiting a Sun-like star. It circles its star every 6.1 days at a distance of 4.7 million miles. At that distance, its temperature is expected to be about 1,400 degrees F. This is an artist's rendering. Credit NASA/JPL-Caltech/T. Pyle Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.