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Dwarf planet, Ceres

Average distance from the Sun     380,995,857 km / 2.5468 AU — 446,669,322 km / 2.9858 AU
Diameter     950 km
Mass     9.43e20 kg
Orbital period around the Sun     4.6 Earth years / 1,680 Earth days
Number of moons     0
Ceres is the smallest-yet-identified dwarf planet and the only one in the Asteroid belt. Ceres is the largest body in the Asteroid belt, containing almost one-third of the region’s total mass.

Our Solar System

Our solar system is located on the edge of a spiral arm called Orion’s Arm, and is one-half to two-thirds of the way (28,000 light-years) from the center of our Milky Way galaxy.

The Sun, Sol

The Inner Planets
    The Moon

The Asteroid Belt
  Dwarf planet, Ceres
  Asteroid, Ida
  Asteroid, Vesta
  Asteroid, Eros

The Outer Planets

The Kuiper Belt
  Dwarf planet, Pluto
  Dwarf planet, Eris

The Oort Cloud
  Dwarf planet, Sedna
  Comet Halley
  Comet Hale-Bopp

  Glossary of Terms
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