Recovering the orbits of known PHAs Virtual Observatory Resource

Authors
  1. Kovacova M.
  2. Published by
    CDS
Abstract

Resonances in the main asteroid belt play a significant role in the dynamical evolution of small bodies. They are capable of driving objects into the near-Earth object (NEO) region as well. This work re-examines the transportation abilities of the 5:2 mean motion resonance (MMR) with Jupiter. We focus on a greater portion of the resonance than the previous study that used a similar method. We are also interested in an elimination course along q~0.26au that was discovered previously. Moreover, we search for the orbits of potentially hazardous asteroids (PHAs) have and for orbits that correspond to recent L chondrite meteorites. Firstly, short-term fast Lyapunov indicator maps of the 5:2 MMR were computed in order to distinguish between stable and unstable orbits. Then over 10000 unstable particles were selected and integrated for a longer period of time, up to 10Myr, to reveal the transportation abilities of the resonance. During our simulation, 99.45% of test particles became NEOs, 9.43% reached the orbit with a semi-major axis, a<1au, and over 27% of particles migrated to low perihelion distances q<0.005au. In addition, 92.8% of the particles entered the Hill sphere of the Earth and over 97% reached an orbit at which we would classify them as potentially hazardous if they were sufficiently large. However, our simulation did not confirm ejections along q~0.26au. Our results suggest that there is some kind of discrepancy between using the MERCURIUS integrator (REBOUND package) and the ORBIT9 integrator (OrbFit package). This subject is worth additional examination.

Keywords
  1. solar-system
  2. asteroids
Bibliographic source Bibcode
2024A&A...686A.107K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/686/A107
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/686/A107
Document Object Identifer DOI
doi:10.26093/cds/vizier.36860107

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History

2024-06-03T09:25:44Z
Resource record created
2024-06-03T09:25:44Z
Created
2024-09-19T20:01:24Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr