Articolo in rivista, 2023, ENG, 10.1016/j.icarus.2022.115330

On the co-orbital asteroids in the solar system: medium-term timescale analysis of the quasi-coplanar objects

S. Di Ruzza, A. Pousse and E.M. Alessi

Università di Palermo; CNR-IMATI

The focus of this work is the current distribution of asteroids in co-orbital motion with Venus, Earth and Jupiter, under a quasi-coplanar configuration and for a medium-term timescale of the order of 900 years. A co-orbital trajectory is a heliocentric orbit trapped in a 1:1 mean-motion resonance with a given planet. As such, to model it this work considers the Restricted Three-Body Problem in the planar circular case with the help of averaging techniques. The domain of each co-orbital regime, that is, the quasi-satellite motion, the horseshoe motion and the tadpole motion, can be neatly defined by means of an integrable model and a simple two-dimensional map, that is invariant with respect to the mass parameter of the planet, and turns out to be a remarkable tool to investigate the distribution of the co-orbitals objects of interest. The study is based on the data corresponding to the ephemerides computed by the JPL Horizons system for asteroids with a sufficient low orbital inclination with respect to the Sun-planet orbital plane. These objects are cataloged according to their current dynamics, together with the transitions that occur in the given time frame from a given type of co-orbital motion to another. The results provide a general catalog of co-orbital asteroids in the solar system, the first one to our knowledge, and an efficient mean to study transitions.

Icarus (N.Y.N.Y. 1962) 390 , pp. 115330–?

Keywords

Orbital resonances, asteroids dynamics, celestial mechanics, Trojan asteroids

CNR authors

Pousse Alexandre, Alessi Elisa Maria

CNR institutes

IMATI – Istituto di matematica applicata e tecnologie informatiche "Enrico Magenes"

ID: 473126

Year: 2023

Type: Articolo in rivista

Creation: 2022-11-14 11:36:35.000

Last update: 2022-11-17 23:01:46.000

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:473126

DOI: 10.1016/j.icarus.2022.115330