Planets

Planet 9 :

Maybe 10 times the mass of Earth orbiting 20 times farther from the Sun in a highly elliptical trajectory, taking between 10,000 and 20,000 years to Orbit the Sun.

Exo Planets

Kepler has found 1,235 planet candidates as of 2011 Feb 2. The link below summarizes the confirmed planets.

http://kepler.nasa.gov/Mission/discoveries/

Planet motion