Is in orbit around a star, but is not itself a satellite*; Has sufficient mass so it is nearly spherical in shape*; Has not cleared the neighborhood around its orbit*. The only difference between a planet and a dwarf planet is the area surrounding each celestial body. read more
Satellites is a broad term that is used to describe all orbiting objects. Dwarf planets are satellites, but asteroids are only considered satellites if they orbit something. Comets may be considered satellites when in orbit, but they rarely orbit other structures. read more
As of January 2012, there are 176 known moons orbiting six of the eight planets, eight orbiting three of the five dwarf planets, and there are 76 asteroids located in the asteroid belt, between Mars and Venus, that have satellites orbiting them. read more
Eris, Pluto, and two more recently discovered KBOs named Haumea and Makemake, are the dwarf planets recognized by the IAU. Pluto, Eris, Haumea, and Makemake are also classified as KBOs, and Ceres has retained its asteroid label. There are an estimated 100 dwarf planets within the solar system and hundreds more in and just outside the Kuiper Belt. read more
It is neither a star nor a satellite of another planet. Dwarf Planet A dwarf planet is also a spherical body orbiting the sun; however, to be a dwarf planet, it must be smaller than 3031 miles in diameter, but heavy enough to bear a resemblance to a planet. read more
A satellite is a body that revolves around a planet, whether it is a natural satellite, such as a moon, or an artificial satellite, like the Hubble telescope, International Space Station, or any other number of satellites for communication, navigation, information, etc. read more