Explain Kepler’s three laws in your own words: kepler's third law implies that the period for a planet to actually orbit the sun increases with the radius of the orbit . Then calculate the orbital period of a dwarf planet found to have a semimajor axis of a = 4.0x 10 12 meters in seconds and years. G is universal gravitational constant M is solar mass Plugging all the values, Since, So, the orbital period of a dwarf planet is 138.52 years. Research (and cite your source) to determine which planet this dwarf planet would be closest to. Submit a scan of your work and answers using the submission link for this assignment. : pluto is the dwarf planet and the nearest planet is mercury.