{"id":4247,"date":"2008-01-07T12:08:55","date_gmt":"2008-01-07T10:08:55","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil1\/?p=4247"},"modified":"2015-04-12T12:11:02","modified_gmt":"2015-04-12T10:11:02","slug":"lasteroide-2007-wd5-pourrait-frapper-mars-le-30-janvier","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-2007-wd5-pourrait-frapper-mars-le-30-janvier\/","title":{"rendered":"L&rsquo;ast\u00e9roide 2007 WD5 pourrait frapper Mars le 30 janvier"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p align=\"justify\"><span style=\"font-size: small;\">Contre toute attente, la probabilit\u00e9 d\u2019une collision de l\u2019ast\u00e9ro\u00efde 2007 WD5 avec Mars le 30 janvier 2008 se renforce de jour en jour. Plac\u00e9e \u00e0 1,3% (une chance sur 75) le 21 d\u00e9cembre, elle est aujourd\u2019hui de 3,9 % (une chance sur 25).<br \/>\n<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">L&rsquo;ast\u00e9ro\u00efde 2007 WD5, d\u00e9couvert en novembre, est d&rsquo;une taille similaire \u00e0 celle de l&rsquo;objet c\u00e9leste Tunguska qui s&rsquo;\u00e9tait \u00e9cras\u00e9 dans le centre de la Sib\u00e9rie en 1908. La collision avait d\u00e9ploy\u00e9 une puissance \u00e9quivalente \u00e0 une bombe nucl\u00e9aire de 15 m\u00e9gatonnes et ras\u00e9 60 millions d&rsquo;arbres.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">\u00abCette probabilit\u00e9 (1 sur 25) est tr\u00e8s inhabituelle. On travaille g\u00e9n\u00e9ralement avec des probabilit\u00e9s vraiment faibles lorsqu&rsquo;on recherche des ast\u00e9ro\u00efdes mena\u00e7ants\u00bb, a expliqu\u00e9 Steve Chesley, astronome \u00e0 la NASA.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">Naturellement, il reste encore 24 chances sur 25 pour que 2007 WD5 \u00e9vite finalement Mars le 30 janvier 2008. Il est cependant assez inhabituel qu\u2019une probabilit\u00e9 de collision d\u2019ast\u00e9ro\u00efde se renforce au fil des raffinements de trajectoire.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">L&rsquo;ast\u00e9ro\u00efde, dont la vitesse est de pr\u00e8s de 13km\/s, est actuellement \u00e0 mi-chemin de sa route vers Mars. Les chances d&rsquo;impact \u00e9taient au d\u00e9part d&rsquo;une sur 350, mais la probabilit\u00e9 a augment\u00e9 apr\u00e8s l&rsquo;\u00e9tude de nouvelles informations\u00a0il y a 3\u00a0semaines, et devrait encore grandir ce mois ci, apr\u00e8s de nouvelles observations de son orbite, a indiqu\u00e9 Steve Chesley.<\/span><\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p align=\"justify\"><span style=\"font-size: small;\"><a href=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/spaw\/images\/mars_1.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/spaw\/images\/mars_1.jpg?resize=250%2C250\" alt=\"\" width=\"250\" height=\"250\" align=\"left\" \/><\/a>\u00abNous savons qu&rsquo;il va passer \u00e0 c\u00f4t\u00e9 de Mars, mais qu&rsquo;il ne va tr\u00e8s probablement pas la percuter, mais il existe une possibilit\u00e9 qu&rsquo;il y ait impact\u00bb, a soulign\u00e9 l&rsquo;astronome.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">En cas de collision avec Mars, l&rsquo;ast\u00e9ro\u00efde devrait percuter l&rsquo;\u00e9quateur de la plan\u00e8te et creuser un crat\u00e8re d&rsquo;une largeur d&rsquo;environ un kilom\u00e8tre de large. Il ne devrait toutefois pas atteindre la sonde Opportunity qui explore la plan\u00e8te depuis 1994.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">En 2004, des fragments de la com\u00e8te Shoemaker-Levy 9 avaient percut\u00e9 Jupiter, entra\u00eenant d&rsquo;impressionnantes projections de feu dans l&rsquo;espace. Les astronomes n&rsquo;ont jamais \u00e9t\u00e9 t\u00e9moins de collision entre un ast\u00e9ro\u00efde et une plan\u00e8te de notre syst\u00e8me solaire.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">INFO 25 JANVIER 2008 : L&rsquo;ast\u00e9roide ne touchera pas la Plan\u00e8te Mars<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">Sources : AP<\/span> \/ <a href=\"http:\/\/www.20min.ch\/\">http:\/\/www.20min.ch\/<\/a>\u00a0\/ <a href=\"http:\/\/www.cidehom.com\/\">http:\/\/www.cidehom.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"4247\">(424)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Contre toute attente, la probabilit\u00e9 d\u2019une collision de l\u2019ast\u00e9ro\u00efde 2007 WD5 avec Mars le 30 janvier 2008 se renforce de&#8230;<\/p>\n","protected":false},"author":1,"featured_media":4248,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[118,1521,117,3272,123],"class_list":["post-4247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-asteroide","tag-comete","tag-espace","tag-janvier-2008","tag-mars","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/2007WD5.jpg?fit=240%2C180&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-16v","jetpack-related-posts":[{"id":26696,"url":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-2024-yr4-augmente-sa-dangerosite-pour-2032\/","url_meta":{"origin":4247,"position":0},"title":"L&rsquo;ast\u00e9ro\u00efde 2024 YR4 augmente sa dangerosit\u00e9 pour 2032","author":"Admin","date":"15 f\u00e9vrier 2025","format":false,"excerpt":"L'ast\u00e9ro\u00efde 2024 YR4 a une infime chance de heurter la Terre en 2032, mais pour l'instant, vous pouvez le regarder voler inoffensivement dans l'espace dans une courte vid\u00e9o en acc\u00e9l\u00e9r\u00e9 captur\u00e9e par le t\u00e9lescope ATLAS financ\u00e9 par la NASA. Un t\u00e9lescope a r\u00e9v\u00e9l\u00e9 des images d'un ast\u00e9ro\u00efde suffisamment gros pour\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"asteroide","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/09\/asteroide.jpg?fit=550%2C431&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/09\/asteroide.jpg?fit=550%2C431&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/09\/asteroide.jpg?fit=550%2C431&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":25679,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-probabilite-que-lasteroide-apophis-frappe-la-terre-en-2029-vient-detre-revue\/","url_meta":{"origin":4247,"position":1},"title":"La probabilit\u00e9 que l\u2019ast\u00e9ro\u00efde \u00ab Apophis \u00bb frappe la Terre en 2029 vient d\u2019\u00eatre revue","author":"Admin","date":"14 mars 2024","format":false,"excerpt":"En 2029, un ast\u00e9ro\u00efde massif passera suffisamment pr\u00e8s de la Terre pour \u00eatre visible \u00e0 l\u2019oeil nu. Si les mod\u00e8les de son orbite excluent tout impact avec notre plan\u00e8te au cours des cent prochaines ann\u00e9es, des astronomes canadiens ont r\u00e9cemment explor\u00e9 la possibilit\u00e9 que des collisions avec d\u2019autres roches spatiales\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/asteroide-apophis.jpg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/asteroide-apophis.jpg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/asteroide-apophis.jpg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/asteroide-apophis.jpg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/asteroide-apophis.jpg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":26998,"url":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-de-ville-a-encore-plus-de-chances-de-percuter-la-lune-en-2032\/","url_meta":{"origin":4247,"position":2},"title":"L&rsquo;ast\u00e9ro\u00efde \u00ab tueur de ville \u00bb a encore plus de chances de percuter la Lune en 2032","author":"Admin","date":"19 juin 2025","format":false,"excerpt":"Un ast\u00e9ro\u00efde qui a fait irruption sur la sc\u00e8ne avec un risque inhabituellement \u00e9lev\u00e9 de heurter la Terre vient de voir son risque de collision augment\u00e9. En f\u00e9vrier 2025, le risque maximal de collision de l'ast\u00e9ro\u00efde 2024 YR4 avec notre plan\u00e8te natale lorsqu'il reviendra en 2032 \u00e9tait estim\u00e9 \u00e0 3,1\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2013\/04\/asteroide-nasa.jpg?fit=616%2C462&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2013\/04\/asteroide-nasa.jpg?fit=616%2C462&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2013\/04\/asteroide-nasa.jpg?fit=616%2C462&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":10916,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-asteroide-frolera-la-terre-en-mars-2016\/","url_meta":{"origin":4247,"position":3},"title":"Un ast\u00e9ro\u00efde fr\u00f4lera la Terre en mars 2016","author":"Admin","date":"12 f\u00e9vrier 2016","format":false,"excerpt":"L'agence spatiale am\u00e9ricaine (NASA) a pr\u00e9venu les habitants de la Terre de l\u2019approche d\u2019un ast\u00e9ro\u00efde de 30 m\u00e8tres de diam\u00e8tre. L'ast\u00e9ro\u00efde baptis\u00e9 2013 TX68 qui \u00e9tait pass\u00e9 \u00e0 proximit\u00e9 de la Terre il y a deux ans, repassera le 5 mars \u00e0 seulement 14.000-17.000 km, une distance 21 fois inf\u00e9rieure\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":22920,"url":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-bennu-na-que-tres-peu-de-chance-de-frapper-la-terre\/","url_meta":{"origin":4247,"position":4},"title":"L&rsquo;ast\u00e9ro\u00efde Bennu n&rsquo;a que tr\u00e8s peu de chance de frapper la Terre","author":"Admin","date":"12 ao\u00fbt 2021","format":false,"excerpt":"Si la possibilit\u00e9 qu'un ast\u00e9ro\u00efde appel\u00e9 Bennu percute la Terre dans une vie enti\u00e8re vous emp\u00eachait de dormir, les scientifiques de la NASA pensent que vous pouvez vous reposer un peu plus facilement. Bennu a \u00e9t\u00e9 d\u00e9couvert en 1999 et mesure 500 m\u00e8tres de diam\u00e8tre, est l'un des deux ast\u00e9ro\u00efdes\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/asteroide-Bennu.jpg?fit=1000%2C641&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/asteroide-Bennu.jpg?fit=1000%2C641&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/asteroide-Bennu.jpg?fit=1000%2C641&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/asteroide-Bennu.jpg?fit=1000%2C641&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":15397,"url":"https:\/\/www.laterredufutur.com\/accueil\/asteroides\/","url_meta":{"origin":4247,"position":5},"title":"Risque grandissant d&rsquo;une collision avec un ast\u00e9ro\u00efde, selon des chercheurs !!","author":"Admin","date":"6 juin 2017","format":"chat","excerpt":"Des astronomes de l'Acad\u00e9mie tch\u00e8que des sciences ont \u00e9voqu\u00e9 mardi le risque plus \u00e9lev\u00e9 pour la Terre d'\u00eatre touch\u00e9e par un ast\u00e9ro\u00efde, recommandant vivement des recherches pour \u00e9viter \"un d\u00e9sastre local ou m\u00eame continental\". Les ast\u00e9ro\u00efdes en question proviennent d'une branche r\u00e9cemment d\u00e9couverte des Taurides, \u00e9toiles filantes d'un essaim m\u00e9t\u00e9orique\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/asteroide-2013-tx68.jpg?fit=1000%2C541&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/4247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=4247"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/4247\/revisions"}],"predecessor-version":[{"id":4249,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/4247\/revisions\/4249"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/4248"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=4247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=4247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=4247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}