{
  "id": "2310.18252",
  "version": "v1",
  "published": "2023-10-27T16:38:55.000Z",
  "updated": "2023-10-27T16:38:55.000Z",
  "title": "Dynamical feasibility of (3) Juno as a parent body of the H chondrites",
  "authors": [
    "John W. Noonan",
    "Kathryn Volk",
    "David Nesvorný",
    "William F. Bottke"
  ],
  "comment": "16 pages, 9 figures",
  "journal": "Volume 408, 15 January 2024, 115838 Volume 408, 15 January 2024, 115838 Icarus Icarus, Volume 408, 15 January 2024, 115838",
  "doi": "10.1016/j.icarus.2023.115838",
  "categories": [
    "astro-ph.EP"
  ],
  "abstract": "We test the hypothesis that (3) Juno is a parent body of the H chondrites with dynamical modeling of an asteroid-family-forming impact and comparison to current observational data. Using a dynamical model that includes the Yarkovsky force on a simulated Juno family and a simplified cosmic ray exposure age model we examine the expected distribution of Juno family members in both the main belt and near-Earth orbits over 300 Myrs and the cosmic ray exposure distribution for fragments exiting the main belt via the 3:1J, 5:2J, and 8:3J mean motion resonances. We find that the smallest modeled ($D<$10 m) family members of (3) Juno cannot be directly responsible for the observed H chondrite flux and that the breakup of larger family members creates an CRE distribution that resembles the measured H chondrite CRE distribution but is still unable to adequately explain the significant number of H chondrites with CRE ages of 6-8 Myrs. A similar model was performed for the asteroid (6) Hebe, another parent body candidate, and produced a CRE age distribution that is inconsistent with the measured H chondrite CRE ages. We also find from our dynamical models that we can expect $<$7 km-scale Juno family members in near-Earth orbits in the present day, consistent with the recent discovery of the shock-darkened H chondrite-like asteroid (52768) 1998 OR$_{2}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-10-27T16:38:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "parent body",
      "dynamical feasibility",
      "cre age",
      "juno family members",
      "distribution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}