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Astrophysics > Earth and Planetary Astrophysics

arXiv:2509.22602 (astro-ph)
[Submitted on 26 Sep 2025]

Title:Small Near-Earth Objects in the Taurid Resonant Swarm

Authors:Quanzhi Ye, Jasmine Li, Denis Vida, David L. Clark, Eric C.
Bellm
View a PDF of the paper titled Small Near-Earth Objects in the Taurid
Resonant Swarm, by Quanzhi Ye and 4 other authors
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    Abstract:The Taurid Resonant Swarm (TRS) within the Taurid
    Complex hosts dynamically-concentrated debris in a 7:2
    mean-motion resonance with Jupiter. Fireball observations have
    confirmed that the TRS is rich in sub-meter-sized particles, but
    whether this enhancement extends to larger, asteroid-sized
    objects remains unclear. Here we reanalyze the data obtained by a
    Zwicky Transient Facility (ZTF) campaign during the 2022 TRS
    encounter, and find that the TRS may host up to $\sim10^2$
    Tunguska-sized objects and up to $\sim10^3$ Chelyabinsk-sized
    objects, the latter of which agrees the estimate derived from
    bolide records. This translates to an impact frequency of less
    than once every 4 million years. However, we caution that these
    numbers are based on the unverified assumption that the orbital
    distribution of the TRS asteroids follows that of fireball-sized
    meteoroids. Future wide-field facilities, such as the Vera C.
    Rubin Observatory, could take advantage of TRS's close approaches
    in the 2020-30s and validate the constraints of the
    asteroid-sized objects in the TRS.

Comments: Accepted for publication on Acta Astronautica, PDC 2025
          Special Issue
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as:  arXiv:2509.22602 [astro-ph.EP]
          (or arXiv:2509.22602v1 [astro-ph.EP] for this version)
          https://doi.org/10.48550/arXiv.2509.22602
          Focus to learn more
          arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Quanzhi Ye [view email]
[v1] Fri, 26 Sep 2025 17:23:07 UTC (173 KB)
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