Re-examination of the transportation abilities of the 5:2 MMR with Jupiter
Authors:
M. Kovacova
Image & caption:
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Image caption::
Final distribution of test particles in the simulation. Green and red dots represent the positions from which the particles were ejected to hyperbolic orbits or orbits with semi-major axis greater than 100 au. Particles that survived whole simulation for 10 million years are blue. Black lines represent the sets of (a, e) where a particle can be to have a perihelion (or aphelion) distance equal to the perihelion (or aphelion) distance of one of the planets. The orange line represents the perihelion distance of 0.26 au.
Description:
Resonances in the main asteroid belt play a significant role in the dynamical evolution of small bodies. We examined the transportation abilities of the 5:2 mean motion resonance with Jupiter, which is associated with some potentially hazardous asteroids and also fossil L chondrites by several studies. We computed 1008 FLI maps that allowed us to distinguish stable and unstable initial conditions. Based on these maps, we integrated over 10000 unstable test particles over a maximum period of 10 million years. It turned out that roughly 99.5% of the test particles became a near-Earth object at some point during the simulation, over 27% reached perihelion distances lower than 0.005 au, 92.8% entered the Hill sphere of the Earth, and over 97% reached an orbit that would allow classifying them as potentially hazardous if they were large enough. However, our simulation did not confirm the elimination of particles along the perihelion distance of about 0.26 au that was found in earlier work.
Reference:
Astronomy and Astrophysics, vol. 686, article no. A107, p. 1-17 (2024)
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