Evolution of a Terrestrial Multiple-Moon System

Details Evolution of a Terrestrial Multiple-Moon System Evolution of a Terrestrial Multiple-Moon System

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aj....117..603c&link_type=abstract

The Astronomical Journal, Volume 117, Issue 1, pp. 603-620.

Astronomy and Astrophysics

Astronomy

18

Moon, Planets And Satellites: General, Solar System: Formation

Scientific paper

The currently favored theory of lunar origin is the giant-impact hypothesis. Recent work that has modeled accretional growth in impact-generated disks has found that systems with one or two large moons and external debris are common outcomes. In this paper we investigate the evolution of terrestrial multiple-moon systems as they evolve due to mutual interactions (including mean motion resonances) and tidal interaction with Earth, using both analytical techniques and numerical integrations. We find that multiple-moon configurations that form from impact-generated disks are typically unstable: these systems will likely evolve into a single-moon state as the moons mutually collide or as the inner moonlet crashes into Earth.

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