double planet

== English == === Noun === double planet (plural double planets) (astronomy) A planet with a moon large enough to be considered a planet, were the planet not there, having a substantial portion of the system's overall mass. (astronomy) A pair of planemos in orbit around each other, where the barycenter of their orbits lies outside of both planemos, which in turn is in orbit about a star. (astronomy) A pair of planemos in orbit around each other, where the barycenter of their orbits lies outside of both planemos. (astronomy) A planemo with a moon large enough to be considered a planemo, having a substantial portion of the system's overall mass. ==== Synonyms ==== binary planet ==== Hypernyms ==== planet === References === double planet on Wikipedia.Wikipedia