20000 Varuna ("VAR oo na") is a Kuiper Belt object about 1060 kilometers in diameter, estimated from a combination of thermal and optical measurements.
Little is known about Varuna. It has a rotational period of approximately 3.17 hours (or 6.34 hours, depending on whether the light curve is single or double-peaked). It has a density of approximately 1 g/cm3 (as dense as water), which implies that it may not be a fully solid body [1].
It is named after the Hindu god Varuna. It previously had the provisional designation 2000 WR106.
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