{"id":7082,"date":"2022-11-02T20:18:31","date_gmt":"2022-11-02T20:18:31","guid":{"rendered":"https:\/\/infos.numonly.com\/wp\/?p=7082"},"modified":"2025-11-30T21:07:23","modified_gmt":"2025-11-30T21:07:23","slug":"un-asteroide-geant-de-12-km-de-diametre-croise-lorbite-de-la-terre","status":"publish","type":"post","link":"https:\/\/numonly.com\/fr\/un-asteroide-geant-de-12-km-de-diametre-croise-lorbite-de-la-terre\/","title":{"rendered":"Un ast\u00e9ro\u00efde g\u00e9ant, de 1,2 km de diam\u00e8tre, croise l&rsquo;orbite de la Terre"},"content":{"rendered":"\n<p>Des astronomes ont annonc\u00e9 lundi 31\u00a0octobre avoir d\u00e9tect\u00e9 un ast\u00e9ro\u00efde, dont le diam\u00e8tre est estim\u00e9 entre <mark style=\"color:#c65ae6\" class=\"has-inline-color\"><strong>1 et 2,26 km<\/strong><\/mark>, circulant sur une orbite qui croise celle de la Terre.<\/p>\n\n\n\n<p>Parmi les ast\u00e9ro\u00efdes d\u00e9tect\u00e9s, il fait partie des <mark style=\"color:#c65ae6\" class=\"has-inline-color\"><strong>1% les plus gros<\/strong><\/mark>.<\/p>\n\n\n\n<p>Baptis\u00e9 <em>2022 AP7<\/em>,  il a \u00e9t\u00e9 class\u00e9 comme \u00ab potentiellement dangereux&nbsp;\u00bb en raison de ses passages relativement proches de la Terre.<\/p>\n\n\n\n<p>Il s\u2019agit du&nbsp;plus gros objet potentiellement dangereux pour la Terre d\u00e9couvert ces huit derni\u00e8res ann\u00e9es.<\/p>\n\n\n\n<p>L\u2019orbite de 2022 AP7 est \u00e0 <mark style=\"color:#c65ae6\" class=\"has-inline-color\"><strong>0,05 UA<\/strong><\/mark> (1 Unit\u00e9 Astrologique = distance Terre Soleil) de l\u2019orbite terrestre \u00e0 son point le plus proche, soit environ <mark style=\"color:#c65ae6\" class=\"has-inline-color\"><strong>7,5 millions de kilom\u00e8tres<\/strong><\/mark>.<\/p>\n\n\n\n<p>Plus de <mark style=\"color:#c65ae6\" class=\"has-inline-color\"><strong>850 g\u00e9ocroiseurs de plus d&rsquo;un kilom\u00e8tre<\/strong><\/mark> \u00e9voluent dans le syst\u00e8me solaire aux environ de la Terre. Aucun ne la menace pour le si\u00e8cle \u00e0 venir, mais entre <mark style=\"color:#c65ae6\" class=\"has-inline-color\"><strong>20 et 50 g\u00e9ocroiseurs<\/strong><\/mark> resteraient \u00e0 d\u00e9tecter.<\/p>\n\n\n\n<p>La trajectoire des g\u00e9ocroiseurs est lentement modifi\u00e9e par les forces gravitationnelles exerc\u00e9es sur lui, notamment par les plan\u00e8tes.\u00a0Les pr\u00e9visions sont donc difficiles sur le tr\u00e8s long terme.<\/p>\n\n\n\n<div class=\"wp-block-inline-spoilers-block\"><div class=\"spoiler-wrap\"><div class=\"spoiler-head collapsed\" title=\"Expand\">Sources<\/div><div class=\"spoiler-body\" style=\"display:none\"><sup><sub><a href=\"https:\/\/www.spacereference.org\/asteroid\/2022-ap7\" target=\"_blank\" rel=\"noopener\">Ast\u00e9ro\u00efde 2022 AP7 (spacereference.org)<\/a><br \/><a href=\"https:\/\/www.nouvelobs.com\/planete\/20221101.OBS65383\/un-asteroide-potentiellement-dangereux-mais-tres-eloigne-decouvert-dans-les-environs-de-la-terre.html\" target=\"_blank\" rel=\"noopener\">un ast\u00e9ro\u00efde\u00a0potentiellement dangereux (nouvelobs.com)<\/a><br \/><a href=\"https:\/\/www.msn.com\/fr-fr\/actualite\/technologie-et-sciences\/non-l-e2-80-99ast-c3-a9ro-c3-afde-c2-ab-tueur-de-plan-c3-a8te-c2-bb-n-e2-80-99est-absolument-pas-mena-c3-a7ant-pour-la-terre\/ar-AA13F2q3\" target=\"_blank\" rel=\"noopener\">l\u2019ast\u00e9ro\u00efde n\u2019est pas mena\u00e7ant pour la Terre (msn.com)<\/a><br \/><a href=\"https:\/\/www.tf1info.fr\/sciences-et-innovation\/espace-decouverte-d-un-asteroide-2022-ap7-tueur-de-planete-qui-pourrait-un-jour-croiser-la-terre-2237250.html\" target=\"_blank\" rel=\"noopener\">un ast\u00e9ro\u00efde \u00ab\u00a0tueur de plan\u00e8te\u00a0\u00bb | TF1 INFO<\/a><\/sub><\/sup><\/div><div class=\"spoiler-body\"><sup><sub><a href=\"https:\/\/www.spacereference.org\/asteroid\/2022-ap7\" target=\"_blank\" rel=\"noopener\">Ast\u00e9ro\u00efde 2022 AP7 (spacereference.org)<\/a><br \/><a href=\"https:\/\/www.nouvelobs.com\/planete\/20221101.OBS65383\/un-asteroide-potentiellement-dangereux-mais-tres-eloigne-decouvert-dans-les-environs-de-la-terre.html\" target=\"_blank\" rel=\"noopener\">un ast\u00e9ro\u00efde\u00a0potentiellement dangereux (nouvelobs.com)<\/a><br \/><a href=\"https:\/\/www.msn.com\/fr-fr\/actualite\/technologie-et-sciences\/non-l-e2-80-99ast-c3-a9ro-c3-afde-c2-ab-tueur-de-plan-c3-a8te-c2-bb-n-e2-80-99est-absolument-pas-mena-c3-a7ant-pour-la-terre\/ar-AA13F2q3\" target=\"_blank\" rel=\"noopener\">l\u2019ast\u00e9ro\u00efde n\u2019est pas mena\u00e7ant pour la Terre (msn.com)<\/a><br \/><a href=\"https:\/\/www.tf1info.fr\/sciences-et-innovation\/espace-decouverte-d-un-asteroide-2022-ap7-tueur-de-planete-qui-pourrait-un-jour-croiser-la-terre-2237250.html\" target=\"_blank\" rel=\"noopener\">un ast\u00e9ro\u00efde \u00ab\u00a0tueur de plan\u00e8te\u00a0\u00bb | TF1 INFO<\/a><\/sub><\/sup><\/div><\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator aligncenter has-alpha-channel-opacity\" \/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n<div class=\"likebtn_container\" style=\"text-align:center;\"><!-- LikeBtn.com BEGIN --><span class=\"likebtn-wrapper\"  data-identifier=\"post_7082\"  data-site_id=\"695d39f5943ec909100f07fe\"  data-clk_modal=\"&lt;p class=&quot;alert alert-info fade in \u00bb role=&quot;alert&quot;&gt;Vous devez &lt;a href= \u00bb %url_login %&quot;&gt;login&lt;\/a&gt; pour voter&lt;\/p&gt;\"  data-dislike_enabled=\"false\"  data-icon_dislike_show=\"false\"  data-voting_enabled=\"false\"  data-white_label=\"true\"  data-style=\"\"  data-unlike_allowed=\"\"  data-show_copyright=\"\"  data-item_url=\"https:\/\/numonly.com\/fr\/un-asteroide-geant-de-12-km-de-diametre-croise-lorbite-de-la-terre\/\"  data-item_title=\"Un ast\u00e9ro\u00efde g\u00e9ant, de 1,2 km de diam\u00e8tre, croise l&#039;orbite de la Terre\"  data-item_date=\"2022-11-02T20:18:31+00:00\"  data-engine=\"WordPress\"  data-plugin_v=\"2.6.59\"  data-prx=\"https:\/\/numonly.com\/wp-admin\/admin-ajax.php?action=likebtn_prx\"  data-event_handler=\"likebtn_eh\" ><\/span><!-- LikeBtn.com END --><\/div>","protected":false},"excerpt":{"rendered":"<p>Des astronomes ont annonc\u00e9 lundi 31\u00a0octobre avoir d\u00e9tect\u00e9 un ast\u00e9ro\u00efde, dont le diam\u00e8tre est estim\u00e9 entre 1 et 2,26 km, circulant sur une orbite&#8230;<\/p>\n<div class=\"likebtn_container\" style=\"text-align:center;\"><!-- LikeBtn.com BEGIN --><span class=\"likebtn-wrapper\"  data-identifier=\"post_7082\"  data-site_id=\"695d39f5943ec909100f07fe\"  data-clk_modal=\"&lt;p class=&quot;alert alert-info fade in \u00bb role=&quot;alert&quot;&gt;Vous devez &lt;a href= \u00bb %url_login %&quot;&gt;login&lt;\/a&gt; pour voter&lt;\/p&gt;\"  data-dislike_enabled=\"false\"  data-icon_dislike_show=\"false\"  data-voting_enabled=\"false\"  data-white_label=\"true\"  data-style=\"\"  data-unlike_allowed=\"\"  data-show_copyright=\"\"  data-item_url=\"https:\/\/numonly.com\/fr\/un-asteroide-geant-de-12-km-de-diametre-croise-lorbite-de-la-terre\/\"  data-item_title=\"Un ast\u00e9ro\u00efde g\u00e9ant, de 1,2 km de diam\u00e8tre, croise l&#039;orbite de la Terre\"  data-item_date=\"2022-11-02T20:18:31+00:00\"  data-engine=\"WordPress\"  data-plugin_v=\"2.6.59\"  data-prx=\"https:\/\/numonly.com\/wp-admin\/admin-ajax.php?action=likebtn_prx\"  data-event_handler=\"likebtn_eh\" ><\/span><!-- LikeBtn.com END --><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-7082","post","type-post","status-publish","format-standard","hentry","category-non-categorise"],"featured_image_urls":{},"appp_media":false,"appp":{"post_detail":{"below_title":"<style>\r\n        .num-meta-box { color: #079183 !important; 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