Crossword clue: an asteroid discovered in 1977; it is unique in having an orbit lying mainly between the orbits of saturn and uranus
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
chiron
6 letters
wn-def
an asteroid discovered in 1977; it is unique in having an orbit lying mainly between the orbits of Saturn and Uranus