Influence of non-gravitational forces on the co-orbital motion

Yi Qi, Ying Ding, Dong Qiao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In the Solar system, there exist many non-gravitational perturbations for co-orbital objects, such as the solar radiation pressure, Yarkovsky effect, and so forth. Their effects play important roles in the dynamics of co-orbital objects as they lead to long-term perturbations accumulating. The motivation of this paper is to investigate the general mechanism of the non-gravitational force on the co-orbital motion in the circular restricted three-body problem. We propose an effective method for perturbed co-orbital motions by analysing the locus of the co-orbital objects in a two-dimensional map. Several expressions derived uncover how the non-gravitational force acts on orbital parameters. Taking the Sun–Jupiter system as an example, we implement numerical computations to demonstrate the validity of our results. Numerical computation shows that most of loci of co-orbital motions are in agreement with our conclusions. Some interesting phenomena of perturbed co-orbital motion, such as the co-orbital transition and escape, are found and explained. The results obtained from this paper provide an efficient approach to analyse the evolution of perturbed co-orbital motions.

Original languageEnglish
Pages (from-to)464-478
Number of pages15
JournalMonthly Notices of the Royal Astronomical Society
Volume529
Issue number1
DOIs
Publication statusPublished - 1 Mar 2024

Keywords

  • celestial mechanics
  • methods: analytical
  • methods: numerical

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