 Kepler @-@ 6 has one confirmed extrasolar planet ; it is a gas giant named Kepler @-@ 6b . The planet is approximately .669 MJ , or some two @-@ thirds the mass of planet Jupiter . It is also slightly more diffuse than Jupiter , with a radius of approximately 1 @.@ 323 RJ . Kepler @-@ 6b orbits at an average distance of .0456 AU from its star , and completes an orbit every 3 @.@ 234 days . The eccentricity of the planet 's orbit is assumed to be 0 , which is that of a circular orbit . 
