{"id":27731,"date":"2021-05-14T15:47:44","date_gmt":"2021-05-14T13:47:44","guid":{"rendered":"https:\/\/karmaka.de\/?p=27731"},"modified":"2021-06-13T11:26:39","modified_gmt":"2021-06-13T09:26:39","slug":"the-main-asteroid-belt-the-primary-source-of-debris-on-comet-like-orbits","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=27731","title":{"rendered":"The Main Asteroid Belt: The Primary Source of Debris on Comet-like Orbits<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>P. M. Shober, E. K. Sansom, P. A. Bland, H. A. R. Devillepoix, M. C. Towner, M. Cup\u00e1k, R. M. Howie, B. A. D. Hartig and S. L. Anderson<\/p>\n\n\n\n<p>The Planetary Science Journal<br>Published: 2021 May 13<\/p>\n\n\n\n<p><a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/abde4b\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/abde4b\/pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Jupiter-family comets (JFCs) contribute a significant amount of debris to near-Earth space. However, telescopic observations of these objects seem to suggest that they have short physical lifetimes. If this is true, the material generated will also be short-lived, but fireball observation networks still detect material on cometary orbits. This study examines centimeter-to-meter-scale sporadic meteoroids detected by the Desert Fireball Network from 2014 to 2020 originating from JFC-like orbits. Analyzing each event&#8217;s dynamic history and physical characteristics, we confidently determined whether they originated from the main asteroid belt or the trans-Neptunian region. Our results indicate that &lt;4% of sporadic meteoroids on JFC-like orbits are genetically cometary. This observation is statistically significant and shows that cometary material is too friable to survive in near-Earth space. Even when considering shower contributions, meteoroids on JFC-like orbits are primarily from the main belt. Thus, the presence of genuine cometary meteorites in terrestrial collections is highly unlikely.&#8221;<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"DFN Orbital Dataset 2014-2020\" width=\"470\" height=\"264\" src=\"https:\/\/www.youtube.com\/embed\/1kMTjdXSnTo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Orbits of meteoroids (2014-2020) detected by the Desert Fireball Network in Australia. Video: P.M. Shober<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P. M. Shober, E. K. Sansom, P. A. Bland, H. A. R. Devillepoix, M. C. Towner, M. Cup\u00e1k, R. M. Howie, B. A. D. Hartig and S. L. Anderson The Planetary Science JournalPublished: 2021 May&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[179,96,8],"tags":[1870,1181,5132,141,2212],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/27731"}],"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=27731"}],"version-history":[{"count":3,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/27731\/revisions"}],"predecessor-version":[{"id":28071,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/27731\/revisions\/28071"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}