Quaoar (minor planet 50000)
Quaoar lies about 42 AU (6.5 billion km) away from us, more distant than either Pluto or Neptune, and moves in a nearly circular orbit with an eccentricity of less than 0.04, meaning that its distance from the Sun changes by only about 8% over the course of a Quaoar year (equal to 285 Earth years). This is very different from Pluto, which has an eccentricity about 6 times larger.
The diameter of Quaor is roughly 1,200 km (740 miles), which is about the size of Pluto's moon Charon. This gives Quaoar a volume about the same as that of all the asteroids in the main asteroid belt put together.
See also largest known Kuiper Belt objects.
Related category NOTABLE ASTEROIDS, CENTAURS, AND KUIPER BELT OBJECTS
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