Trans-Neptunian object
any object in the Solar System that orbits the Sun at a greater average distance than Neptune
(Redirected from Trans-Neptunian objects)
Trans-Neptunian object or TNO is a name astronomers give to any minor planet in the Solar System which orbits (goes around) the Sun beyond the planet Neptune. There are over a thousand of them.[1] Many are in the Kuiper belt.
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