What is the primary definition of a Trans-Neptunian Object?
Answer
An object with a semi-major axis greater than that of Neptune
A Trans-Neptunian Object is fundamentally defined by its orbital path. Specifically, any body within the solar system that maintains an average distance from the Sun greater than the distance of Neptune is categorized as a Trans-Neptunian Object. This broad classification encompasses various populations located in the outer reaches of the solar system, distinguishing them from the planets and smaller bodies that inhabit the inner solar system closer to the Sun.
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