| Issue |
A&A
Volume 699, July 2025
|
|
|---|---|---|
| Article Number | A26 | |
| Number of page(s) | 6 | |
| Section | Planets, planetary systems, and small bodies | |
| DOI | https://doi.org/10.1051/0004-6361/202554489 | |
| Published online | 27 June 2025 | |
Chaotic diffusion and transient resonance captures of the near-Earth asteroid 2024 YR4
Belgrade Astronomical Observatory,
Volgina 7,
11060
Belgrade,
Serbia
★ Corresponding author: smirik@gmail.com
Received:
12
March
2025
Accepted:
2
June
2025
Near-Earth asteroid 2024 YR4 is a dynamically interesting object due to its predicted close approach to Earth in 2032 and its potential previous residence in mean-motion resonances (MMRs). We investigated the previous resonant status of 2024 YR4 through numerical integrations backward for 100 000 years using a statistical approach with 1000 virtual asteroids within the initial uncertainties and employing the ias 15 (modified Everhart) integrator. The statistical analysis revealed a probability for 2024 YR4 of 72% to have been trapped in the 3J-1 resonance in its previous dynamical history, including the nominal orbit. The resonance sticking phenomenon is evident; The asteroid experienced multiple temporary captures in various resonances. Beyond the dominant 3J-1 MMR, 16% of the simulated cases show capture in the 1M-2 resonance and 12% in the 2M+3J-5 resonance, but these secondary captures typically persist for only 2000–10 000 years. These findings agree with existing models of the near-Earth asteroid production, where chaotic diffusion arising from overlapping mean-motion and secular resonances transports objects from the main belt into near-Earth orbits.
Key words: methods: numerical / minor planets, asteroids: general / planet-disk interactions / minor planets, asteroids: individual: 2024 yr4
© The Authors 2025
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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