Double-planet Definition

noun

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.

Wiktionary

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.

Wiktionary

A pair of planemos in orbit around each other, where the barycenter of their orbits lies outside of both planemos.

Wiktionary

A planemo with a moon large enough to be considered a planemo, having a substantial portion of the system's overall mass.

Wiktionary

Other Word Forms of Double-planet

Noun

Singular:
double-planet
Plural:
double-planets

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