{"id":34390,"date":"2023-10-12T20:45:05","date_gmt":"2023-10-12T18:45:05","guid":{"rendered":"https:\/\/karmaka.de\/?p=34390"},"modified":"2023-10-12T20:45:06","modified_gmt":"2023-10-12T18:45:06","slug":"dynamical-feasibility-of-3-juno-as-a-parent-body-of-the-h-chondrites","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=34390","title":{"rendered":"Dynamical feasibility of (3) Juno as a parent body of the H chondrites"},"content":{"rendered":"\n<p>John W. Noonan, Kathryn Volk, David Nesvorn\u00fd, William F. Bottke<\/p>\n\n\n\n<p>Icarus<br>In Press, Journal Pre-proof, Available online 12 October 2023<\/p>\n\n\n\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0019103523004177\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;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&lt;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\u20138 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 OR2.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>John W. Noonan, Kathryn Volk, David Nesvorn\u00fd, William F. Bottke IcarusIn Press, Journal Pre-proof, Available online 12 October 2023 LINK &#8220;We test the hypothesis that (3) Juno is a parent body of the H chondrites&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,7,337],"tags":[5244,4852,2416],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/34390"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=34390"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/34390\/revisions"}],"predecessor-version":[{"id":34391,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/34390\/revisions\/34391"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=34390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=34390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=34390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}