Definitions for double planet
This page provides all possible meanings and translations of the word double planet
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.
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.
a pair of planemos in orbit around each other, where the barycenter of their orbits lies outside of both planemos.
a planemo with a moon large enough to be considered a planemo, having a substantial portion of the system's overall mass.
In astronomy, double planet and binary planet are informal terms used to describe a binary system where both objects are of planetary mass. Though not an official classification, the European Space Agency has referred to the Earth–Moon system as a double planet. The IAU General Assembly in August 2006 considered a proposal that Pluto and Charon be reclassified as a double planet, but the proposal was abandoned. There are also double minor planets, such as binary asteroids 90 Antiope and binary Kuiper belt objects 79360 Sila–Nunam and 1998 WW31.
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"double planet." Definitions.net. STANDS4 LLC, 2015. Web. 30 Jul 2015. <http://www.definitions.net/definition/double planet>.