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Title: Chaotic dynamics in the (47171) Lempo triple system
Author: Correia, Alexandre C. M.
Keywords: Celestial mechanics
Planetary systems
Planets and satellites
Individual: (47171) Lempo
Issue Date: 1-May-2018
Publisher: Elsevier
Abstract: We investigate the dynamics of the (47171) Lempo triple system, also known by 1999 TC36. We derive a full 3D N-body model that takes into account the orbital and spin evolution of all bodies, which are assumed triaxial ellipsoids. We show that, for reasonable values of the shapes and rotational periods, the present best fitted orbital solution for the Lempo system is chaotic and unstable in short time-scales. The formation mechanism of this system is unknown, but the orbits can be stabilised when tidal dissipation is taken into account. The dynamics of the Lempo system is very rich, but depends on many parameters that are presently unknown. A better understanding of this systems thus requires more observations, which also need to be fitted with a complete model like the one presented here.
Peer review: yes
DOI: 10.1016/j.icarus.2018.01.008
ISSN: 0019-1035
Appears in Collections:CIDMA - Artigos
DFis - Artigos

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