The Capture of Trojan Asteroids by the Giant Planets During Planetary Migration
P. S. Lykawka, J. Horner

TL;DR
This study uses dynamical simulations to investigate how all four giant planets in the Solar System captured Trojan asteroids from a primordial disk during planetary migration, revealing varying capture probabilities and the potential for ongoing Trojan population replenishment.
Contribution
It provides the first comprehensive analysis of Trojan capture probabilities for all four giant planets during planetary migration using extensive simulation data.
Findings
Neptune has the highest Trojan capture probability (10^-4 to 10^-3).
All four planets can capture and retain Trojans from the primordial disk.
Captured Trojans tend to have wide ranges of eccentricities and inclinations, with many being dynamically unstable.
Abstract
Of the four giant planets in the Solar system, only Jupiter and Neptune are currently known to possess swarms of Trojan asteroids - small objects that experience a 1:1 mean motion resonance with their host planet. In Lykawka et al. (2009), we performed extensive dynamical simulations, including planetary migration, to investigate the origin of the Neptunian Trojan population. Utilising the vast amount of simulation data obtained for that work, together with fresh results from new simulations, we here investigate the dynamical capture of Trojans by all four giant planets from a primordial trans-Neptunian disk. We find the likelihood of a given planetesimal from this region being captured onto an orbit within Jupiter's Trojan cloud lies between several times 10^-6 and 10^-5. For Saturn, the probability is found to be in the range <10^-6 to 10^-5, whilst for Uranus the probabilities range…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
