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[2405.20411] Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>[2405.20411] Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="apple-touch-icon" sizes="180x180" href="/static/browse/0.3.4/images/icons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/static/browse/0.3.4/images/icons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/static/browse/0.3.4/images/icons/favicon-16x16.png"> <link rel="manifest" href="/static/browse/0.3.4/images/icons/site.webmanifest"> <link rel="mask-icon" href="/static/browse/0.3.4/images/icons/safari-pinned-tab.svg" color="#5bbad5"> <meta name="msapplication-TileColor" content="#da532c"> <meta name="theme-color" content="#ffffff"> <link rel="stylesheet" type="text/css" media="screen" href="/static/browse/0.3.4/css/arXiv.css?v=20240822" /> <link rel="stylesheet" type="text/css" media="print" href="/static/browse/0.3.4/css/arXiv-print.css?v=20200611" /> <link rel="stylesheet" type="text/css" media="screen" href="/static/browse/0.3.4/css/browse_search.css" /> <script language="javascript" src="/static/browse/0.3.4/js/accordion.js" /></script> <link rel="stylesheet" type="text/css" media="screen" href="/static/browse/0.3.4/css/slider.css?v=1.15" /> <script src="//code.jquery.com/jquery-latest.min.js" type="text/javascript"></script> <script type="text/javascript" src="/static/browse/0.3.4/js/donate.js?v=1.11"></script><link rel="canonical" href="https://arxiv.org/abs/2405.20411"/> <meta name="description" content="Abstract page for arXiv paper 2405.20411: Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance"><meta property="og:type" content="website" /> <meta property="og:site_name" content="arXiv.org" /> <meta property="og:title" content="Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance" /> <meta property="og:url" content="https://arxiv.org/abs/2405.20411v1" /> <meta property="og:image" content="/static/browse/0.3.4/images/arxiv-logo-fb.png" /> <meta property="og:image:secure_url" content="/static/browse/0.3.4/images/arxiv-logo-fb.png" /> <meta property="og:image:width" content="1200" /> <meta property="og:image:height" content="700" /> <meta property="og:image:alt" content="arXiv logo"/> <meta property="og:description" content="Among the nearly 30,000 known near-Earth asteroids (NEAs), only tens of them possess Earth co-orbital characteristics with semi-major axes $\sim$1 au. In particular, 469219 Kamo`oalewa (2016 HO3), upcoming target of China's Tianwen-2 asteroid sampling mission, exhibits a meta-stable 1:1 mean-motion resonance with Earth. Intriguingly, recent ground-based observations show that Kamo`oalewa has spectroscopic characteristics similar to space-weathered lunar silicates, hinting at a lunar origin instead of an asteroidal one like the vast majority of NEAs. Here we use numerical simulations to demonstrate that Kamo`oalewa's physical and orbital properties are compatible with a fragment from a crater larger than 10--20 km formed on the Moon in the last few million years. The impact could have ejected sufficiently large fragments into heliocentric orbits, some of which could be transferred to Earth 1:1 resonance and persist today. This leads us to suggest the young lunar crater Giordano Bruno (22 km diameter, 1--10 Ma age) as the most likely source, linking a specific asteroid in space to its source crater on the Moon. 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In particular, 469219 Kamo`oalewa (2016 HO3),..."/> <meta name="twitter:image" content="https://static.arxiv.org/icons/twitter/arxiv-logo-twitter-square.png"/> <meta name="twitter:image:alt" content="arXiv logo"/> <link rel="stylesheet" media="screen" type="text/css" href="/static/browse/0.3.4/css/tooltip.css"/><link rel="stylesheet" media="screen" type="text/css" href="https://static.arxiv.org/js/bibex-dev/bibex.css?20200709"/> <script src="/static/browse/0.3.4/js/mathjaxToggle.min.js" type="text/javascript"></script> <script src="//code.jquery.com/jquery-latest.min.js" type="text/javascript"></script> <script src="//cdn.jsdelivr.net/npm/js-cookie@2/src/js.cookie.min.js" type="text/javascript"></script> <script src="//cdn.jsdelivr.net/npm/dompurify@2.3.5/dist/purify.min.js"></script> <script src="/static/browse/0.3.4/js/toggle-labs.js?20241022" type="text/javascript"></script> <script src="/static/browse/0.3.4/js/cite.js" type="text/javascript"></script><meta name="citation_title" content="Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance" /><meta name="citation_author" content="Jiao, Yifei" /><meta name="citation_author" content="Cheng, Bin" /><meta name="citation_author" content="Huang, Yukun" /><meta name="citation_author" content="Asphaug, Erik" /><meta name="citation_author" content="Gladman, Brett" /><meta name="citation_author" content="Malhotra, Renu" /><meta name="citation_author" content="Michel, Patrick" /><meta name="citation_author" content="Yu, Yang" /><meta name="citation_author" content="Baoyin, Hexi" /><meta name="citation_doi" content="10.1038/s41550-024-02258-z" /><meta name="citation_date" content="2024/05/30" /><meta name="citation_online_date" content="2024/05/30" /><meta name="citation_pdf_url" content="http://arxiv.org/pdf/2405.20411" /><meta name="citation_arxiv_id" content="2405.20411" /><meta name="citation_abstract" content="Among the nearly 30,000 known near-Earth asteroids (NEAs), only tens of them possess Earth co-orbital characteristics with semi-major axes $\sim$1 au. In particular, 469219 Kamo`oalewa (2016 HO3), upcoming target of China's Tianwen-2 asteroid sampling mission, exhibits a meta-stable 1:1 mean-motion resonance with Earth. Intriguingly, recent ground-based observations show that Kamo`oalewa has spectroscopic characteristics similar to space-weathered lunar silicates, hinting at a lunar origin instead of an asteroidal one like the vast majority of NEAs. Here we use numerical simulations to demonstrate that Kamo`oalewa's physical and orbital properties are compatible with a fragment from a crater larger than 10--20 km formed on the Moon in the last few million years. The impact could have ejected sufficiently large fragments into heliocentric orbits, some of which could be transferred to Earth 1:1 resonance and persist today. This leads us to suggest the young lunar crater Giordano Bruno (22 km diameter, 1--10 Ma age) as the most likely source, linking a specific asteroid in space to its source crater on the Moon. The hypothesis will be tested by the Tianwen-2 mission when it returns a sample of Kamo`oalewa. And the upcoming NEO Surveyor mission will possibly help us to identify such a lunar-derived NEA population." /> </head> <body class="with-cu-identity"> <aside class="slider-wrapper bps-banner forum blue"> <a class="close-slider bps-banner" href="#"><img src="/static/browse/0.3.4/images/icons/close-slider.png" alt="close this message"></a> <div class="columns"> <img role="presentation" class="bps-banner-image" src="/static/browse/0.3.4/images/icons/smileybones-pixel.png" alt="arXiv Smilely Bones"> <div class="copy-donation bps-banner"> <h2>Happy Giving Tuesday - support arXiv today!</h2> <p>Thank you to everyone who makes arXiv possible. 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--><div id="abs-outer"> <div class="leftcolumn"> <div class="subheader"> <h1>Astrophysics > Earth and Planetary Astrophysics</h1> </div> <div class="header-breadcrumbs-mobile"> <strong>arXiv:2405.20411</strong> (astro-ph) </div> <link rel="stylesheet" type="text/css" href="/static/base/1.0.1/css/abs.css"> <div id="content-inner"> <div id="abs"> <div class="dateline"> [Submitted on 30 May 2024]</div> <h1 class="title mathjax"><span class="descriptor">Title:</span>Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance</h1> <div class="authors"><span class="descriptor">Authors:</span><a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Jiao,+Y" rel="nofollow">Yifei Jiao</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Cheng,+B" rel="nofollow">Bin Cheng</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Huang,+Y" rel="nofollow">Yukun Huang</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Asphaug,+E" rel="nofollow">Erik Asphaug</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Gladman,+B" rel="nofollow">Brett Gladman</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Malhotra,+R" rel="nofollow">Renu Malhotra</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Michel,+P" rel="nofollow">Patrick Michel</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Yu,+Y" rel="nofollow">Yang Yu</a>, <a href="https://arxiv.org/search/astro-ph?searchtype=author&query=Baoyin,+H" rel="nofollow">Hexi Baoyin</a></div> <div id="download-button-info" hidden>View a PDF of the paper titled Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance, by Yifei Jiao and 8 other authors</div> <a class="mobile-submission-download" href="/pdf/2405.20411">View PDF</a> <a class="mobile-submission-download" href="https://arxiv.org/html/2405.20411v1">HTML (experimental)</a> <blockquote class="abstract mathjax"> <span class="descriptor">Abstract:</span>Among the nearly 30,000 known near-Earth asteroids (NEAs), only tens of them possess Earth co-orbital characteristics with semi-major axes $\sim$1 au. In particular, 469219 Kamo`oalewa (2016 HO3), upcoming target of China's Tianwen-2 asteroid sampling mission, exhibits a meta-stable 1:1 mean-motion resonance with Earth. Intriguingly, recent ground-based observations show that Kamo`oalewa has spectroscopic characteristics similar to space-weathered lunar silicates, hinting at a lunar origin instead of an asteroidal one like the vast majority of NEAs. Here we use numerical simulations to demonstrate that Kamo`oalewa's physical and orbital properties are compatible with a fragment from a crater larger than 10--20 km formed on the Moon in the last few million years. The impact could have ejected sufficiently large fragments into heliocentric orbits, some of which could be transferred to Earth 1:1 resonance and persist today. This leads us to suggest the young lunar crater Giordano Bruno (22 km diameter, 1--10 Ma age) as the most likely source, linking a specific asteroid in space to its source crater on the Moon. The hypothesis will be tested by the Tianwen-2 mission when it returns a sample of Kamo`oalewa. And the upcoming NEO Surveyor mission will possibly help us to identify such a lunar-derived NEA population. </blockquote> <!--CONTEXT--> <div class="metatable"> <table summary="Additional metadata"> <tr> <td class="tablecell label">Comments:</td> <td class="tablecell comments mathjax">29 pages, 4 figures. Published in Nature Astronomy, 19 April 2024</td> </tr> <tr> <td class="tablecell label">Subjects:</td> <td class="tablecell subjects"> <span class="primary-subject">Earth and Planetary Astrophysics (astro-ph.EP)</span></td> </tr><tr> <td class="tablecell label">Cite as:</td> <td class="tablecell arxivid"><span class="arxivid"><a href="https://arxiv.org/abs/2405.20411">arXiv:2405.20411</a> [astro-ph.EP]</span></td> </tr> <tr> <td class="tablecell label"> </td> <td class="tablecell arxividv">(or <span class="arxivid"> <a href="https://arxiv.org/abs/2405.20411v1">arXiv:2405.20411v1</a> [astro-ph.EP]</span> for this version) </td> </tr> <tr> <td class="tablecell label"> </td> <td class="tablecell arxivdoi"> <a href="https://doi.org/10.48550/arXiv.2405.20411" id="arxiv-doi-link">https://doi.org/10.48550/arXiv.2405.20411</a><div class="button-and-tooltip"> <button class="more-info" aria-describedby="more-info-desc-1"> <svg height="15" role="presentation" xmlns="http://www.w3.org/2000/svg" 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<div class="submission-history"> <h2>Submission history</h2> From: Yifei Jiao [<a href="/show-email/8b5d46cd/2405.20411" rel="nofollow">view email</a>] <br/> <strong>[v1]</strong> Thu, 30 May 2024 18:35:01 UTC (1,306 KB)<br/> </div> </div> <!--end leftcolumn--> <div class="extra-services"> <div class="full-text"> <a name="other"></a> <span class="descriptor">Full-text links:</span> <h2>Access Paper:</h2> <ul> <div id="download-button-info" hidden> View a PDF of the paper titled Asteroid Kamo`oalewa's journey from the lunar Giordano Bruno crater to Earth 1:1 resonance, by Yifei Jiao and 8 other authors</div><li><a href="/pdf/2405.20411" aria-describedby="download-button-info" accesskey="f" class="abs-button download-pdf">View PDF</a></li><li><a href="https://arxiv.org/html/2405.20411v1" class="abs-button" id="latexml-download-link">HTML (experimental)</a></li><li><a href="/src/2405.20411" class="abs-button download-eprint">TeX Source</a></li><li><a href="/format/2405.20411" 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