Dwarf Planet

Ceres

The largest object in the asteroid belt.

Discovered in 1801 as the first asteroid; reclassified as a dwarf planet in 2006. Has water-ice and bright salt deposits.

See also

Pluto

The icy heart of the Kuiper Belt.

Makemake

An icy dwarf in the outer Kuiper Belt.

Eris

The discovery that demoted Pluto.

Haumea

An egg-shaped dwarf with a ring.

Sedna

A distant red world from the Solar System's edge.