{"id":2814,"date":"2015-05-15T05:07:45","date_gmt":"2015-05-15T05:07:45","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=2814"},"modified":"2015-05-31T07:54:45","modified_gmt":"2015-05-31T07:54:45","slug":"lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/","title":{"rendered":"L&#8217;ast\u00e9ro\u00efde 2015 JF1 s&#8217;approche de la Terre le 15 mai"},"content":{"rendered":"<p>L&#8217;<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/24\/les-grosses-meteorites-inquietent-les-scientifiques\/\" target=\"_blank\">ast\u00e9ro\u00efde<\/a> 2015 JF1, un gros caillou d&#8217;une dizaine de m\u00e8tres, passe aujourd&#8217;hui \u00e0 300 000 km de la Terre, une distance inf\u00e9rieure \u00e0 celle qui nous s\u00e9pare de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/06\/la-lune-presque-pleine-se-couche-a-laube-du-6-mai\/\" target=\"_blank\">Lune<\/a>. Seuls les possesseurs de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/05\/14\/en-images-les-telescopes-amateurs\/\" target=\"_blank\">t\u00e9lescopes <\/a>d&#8217;au moins 50 cm de diam\u00e8tre auront une chance d&#8217;observer cet ast\u00e9ro\u00efde tr\u00e8s discret (magnitude de 16).<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde.jpg\" rel=\"lightbox[2814]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2815\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde-450x318.jpg\" alt=\"astero\u00efde\" width=\"450\" height=\"318\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde-450x318.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde-1024x724.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde.jpg 1273w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>2015 JF1 a \u00e9t\u00e9 d\u00e9couvert dans le cadre du <em><a href=\"http:\/\/www.lpl.arizona.edu\/css\/css_facilities.html\" target=\"_blank\">Mount Lemmon Survey<\/a><\/em>, un projet de surveillance des ast\u00e9ro\u00efdes g\u00e9ocroiseurs (ou NEO pour <em>Near Earth Object<\/em>) qui utilise un t\u00e9lescope automatis\u00e9 de 1,5 m de diam\u00e8tre install\u00e9 \u00e0 2800 m d&#8217;altitude dans les monts Santa Catalina en Arizona (USA). Sont class\u00e9s comme g\u00e9ocroiseurs tous les corps de plus de 150 m qui s&#8217;approchent \u00e0 moins de 8 millions de km de la Terre.<\/p>\n<p><!--more-->2015 JF1 est le dernier des quatre petits ast\u00e9ro\u00efdes qui se sont approch\u00e9s \u00e0 moins de 4 millions de km de la Terre cette semaine.<\/p>\n<p>Hier les astronomes ont pu suivre un autre ast\u00e9ro\u00efde beaucoup plus imposant\u00a0: 1999 FN53, un bloc d&#8217;environ 1 km, est pass\u00e9 \u00e0 10 millions de km de notre plan\u00e8te.<\/p>\n<p>Compte tenu de sa taille, les plus grandes antennes radar ont \u00e9t\u00e9 mises \u00e0 contribution pour imager 1999 FN53\u00a0: celle de <a href=\"http:\/\/gssr.jpl.nasa.gov\/\" target=\"_blank\">Goldstone <\/a>en Californie (70 m de diam\u00e8tre) et celle d&#8217;<a href=\"https:\/\/www.naic.edu\/\" target=\"_blank\">Arecibo<\/a> \u00e0 Porto Rico (305 m de diam\u00e8tre).<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>L&#8217;ast\u00e9ro\u00efde 2015 JF1, un gros caillou d&#8217;une dizaine de m\u00e8tres, passe aujourd&#8217;hui \u00e0 300 000 km de la Terre, une distance inf\u00e9rieure \u00e0 celle qui nous s\u00e9pare de la Lune. Seuls les possesseurs de t\u00e9lescopes d&#8217;au moins 50 cm de diam\u00e8tre auront une chance d&#8217;observer cet ast\u00e9ro\u00efde tr\u00e8s discret (magnitude de 16). 2015 JF1 a &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">L&#8217;ast\u00e9ro\u00efde 2015 JF1 s&#8217;approche de la Terre le 15 mai<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":2815,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[1043,1040,240,594,1041,1042,1044,799,96],"class_list":["post-2814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-1999-fn53","tag-2015-jf1","tag-asteroide","tag-geocroiseur","tag-mount-lemmon-survey","tag-neo","tag-radar-darecibo","tag-radar-de-goldstone","tag-telescope"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L&#039;ast\u00e9ro\u00efde 2015 JF1 s&#039;approche de la Terre le 15 mai<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;ast\u00e9ro\u00efde 2015 JF1 s&#039;approche de la Terre le 15 mai\" \/>\n<meta property=\"og:description\" content=\"L&#8217;ast\u00e9ro\u00efde 2015 JF1, un gros caillou d&#8217;une dizaine de m\u00e8tres, passe aujourd&#8217;hui \u00e0 300 000 km de la Terre, une distance inf\u00e9rieure \u00e0 celle qui nous s\u00e9pare de la Lune. Seuls les possesseurs de t\u00e9lescopes d&#8217;au moins 50 cm de diam\u00e8tre auront une chance d&#8217;observer cet ast\u00e9ro\u00efde tr\u00e8s discret (magnitude de 16). 2015 JF1 a &hellip; Continuer la lecture de L&#8217;ast\u00e9ro\u00efde 2015 JF1 s&#8217;approche de la Terre le 15 mai &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/\" \/>\n<meta property=\"og:site_name\" content=\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\" \/>\n<meta property=\"article:published_time\" content=\"2015-05-15T05:07:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-05-31T07:54:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1273\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jean-Baptiste FELDMANN\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jean-Baptiste FELDMANN\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/\",\"name\":\"L'ast\u00e9ro\u00efde 2015 JF1 s'approche de la Terre le 15 mai\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde.jpg\",\"datePublished\":\"2015-05-15T05:07:45+00:00\",\"dateModified\":\"2015-05-31T07:54:45+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/15\/lasteroide-2015-jf1-sapproche-de-la-terre-le-15-mai\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/05\/astero\u00efde.jpg\",\"width\":1273,\"height\":900},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/\",\"name\":\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\",\"description\":\"&quot;J&#039;ai en moi un besoin terrible. 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