This is a Dwarf Planet candidate.
In 2002, Michael Brown and Chadwick Trujillo of the Gemini Observatory in Hawaii found a large body and called it Quaoar. Its official scientific designation is 2002 LM60.
Quaoar is pronounced "kwa-whar."
After Quaoar was detected by a telescope on Earth as simply a dot of light, astronomers aimed the Hubble Space Telescope's powerful camera at it. Quaoar at that time became the farthest object in the Solar System ever to be resolved by a telescope.
Astronomers think Quaoar is composed mostly of ices mixed with rock, something like the makeup of a comet, although 100 million times greater in volume than an ordinary comet.
Even though Quaoar is smaller than Pluto, it is greater in volume than all the asteroids in the Solar system combined. On the other hand, Quaoar probably amounts to only about one-third the mass of the Asteroid Belt, because it's icy rather than rocky.