what is the closest dwarf planet to earth
Ceres, first spotted by astronomers in 1801, was first called a planet and later an asteroid. In 2006 it was reclassified as a dwarf planet. Ceres is the closest dwarf planet to Earth, orbiting at only 2.8 times Earthâs distance from the sun. Its year takes 4.6 Earth years and its day is 9.1 hours. Ceres has no known moons. Meet the Dwarf Planets of the Solar System (Countdown) Images: Dwarf Planet Eris, Pluto's Cosmic Twin ; Pluto Quiz! How Well Do You Know the Dwarf Planet?