Need synonyms for trans-Neptunian objects? Here's a list of similar words from our thesaurus that you can use instead.
Noun
Plural for any natural object (usually a minor planet (asteroid) or a hypothetical planet) in the Solar System with all or most of its orbit outside the orbit of planet Neptune
“For more detailed information about comets, astroids, and trans-Neptunian objects, which make up the heart of my research, I contact the Minor Planet Center at Harvard.”