{"id":1918,"date":"2022-09-01T18:53:01","date_gmt":"2022-09-01T18:53:01","guid":{"rendered":"https:\/\/www.unistellar.com\/blog\/your-observations-of-nasas-asteroid-impacting-dart-mission-are-needed\/"},"modified":"2022-11-14T09:33:46","modified_gmt":"2022-11-14T09:33:46","slug":"observations-nasa-dart-mission","status":"publish","type":"blog","link":"https:\/\/www.unistellar.com\/fr\/blog\/observations-nasa-dart-mission\/","title":{"rendered":"Nous avons besoin de vos observations sur la mission DART de la NASA"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-579abc80-458a-43b5-90b5-efa821d39207&Prime; custom_padding=\u00a0\u00bb4px||0px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{%22gcid-579abc80-458a-43b5-90b5-efa821d39207%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][dsm_breadcrumbs _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/dsm_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-579abc80-458a-43b5-90b5-efa821d39207&Prime; min_height=\u00a0\u00bb1136px\u00a0\u00bb custom_margin=\u00a0\u00bb||-24px|||\u00a0\u00bb custom_padding=\u00a0\u00bb1px||6px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{%22gcid-579abc80-458a-43b5-90b5-efa821d39207%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_padding=\u00a0\u00bb9px|||||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb sticky_enabled=\u00a0\u00bb0&Prime;]Le 26 septembre, la NASA fera s\u2019\u00e9craser un engin spatial sur un ast\u00e9ro\u00efde pour tester la\u00a0capacit\u00e9 de l\u2019humanit\u00e9 \u00e0 se d\u00e9fendre contre un impact potentiel. C\u2019est un grand moment dans les pr\u00e9paratifs de la\u00a0<a href=\"https:\/\/www.unistellar.com\/fr\/blog\/dart-defense-planetaire\/\">D\u00e9fense Plan\u00e9taire<\/a>, dont la mission est d\u2019\u00e9viter l\u2019impact d\u2019ast\u00e9ro\u00efdes sur la Terre. Les astronomes amateurs auront l\u2019occasion d\u2019assister \u00e0 cet \u00e9v\u00e9nement en direct. La fascinante conclusion de la mission DART sera visible depuis de nombreuses r\u00e9gions de la plan\u00e8te. En recueillant des observations de l\u2019\u00e9v\u00e9nement, nous pourrons fournir des donn\u00e9es importantes qui seront exploit\u00e9es par les scientifiques pour mieux comprendre le d\u00e9roulement du test.<\/p>\n<p>La mission DART\u00a0<a href=\"https:\/\/www.unistellar.com\/fr\/blog\/nasa-dart-double-test-redirection-asteroide\/\">(Double Asteroid Redirection Test)<\/a>\u00a0doit d\u00e9terminer s\u2019il est possible de modifier l\u2019orbite d\u2019un ast\u00e9ro\u00efde en le percutant \u00e0 l\u2019aide d\u2019un engin spatial rapide. Une telle man\u0153uvre pourrait un jour \u00eatre n\u00e9cessaire pour sauver la plan\u00e8te, si un ast\u00e9ro\u00efde g\u00e9ocroiseur dangereux \u00e9tait rep\u00e9r\u00e9 sur une\u00a0<a href=\"https:\/\/www.unistellar.com\/fr\/blog\/dart-vs-dont-look-up\/\">trajectoire entrant en collision<\/a>\u00a0avec la Terre.\u00a0La mission teste cette technique sur l\u2019ast\u00e9ro\u00efde binaire Didymos en envoyant un engin sur sa lune Dimorphos, puis en observant les modifications de trajectoire de l\u2019ast\u00e9ro\u00efde.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/10\/compressdart_unistellar_2-1.gif\u00a0\u00bb title_text=\u00a0\u00bbcompressdart_unistellar_2&Prime; align=\u00a0\u00bbcenter\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<h3>Les scientifiques de la NASA souhaitent recevoir des observations suppl\u00e9mentaires de l\u2019ast\u00e9ro\u00efde avant, pendant et apr\u00e8s le test.<\/h3>\n<p><strong>Avant l\u2019\u00e9v\u00e9nement :<\/strong>\u00a0Les astronomes citoyens peuvent contribuer \u00e0 v\u00e9rifier l\u2019orbite actuelle de Dimorphos et \u00e0 obtenir une base de r\u00e9f\u00e9rence pour nos observations en observant son transit, c\u2019est-\u00e0-dire son passage devant Didymos. Ce passage provoque une baisse de luminosit\u00e9 qui sera visible si de nombreux t\u00e9lescopes Unistellar sont point\u00e9s simultan\u00e9ment sur l\u2019ast\u00e9ro\u00efde Didymos. Nous avons donc besoin du plus grand nombre possible d\u2019observateurs !\u00a0<\/p>\n<p>Japon : le 24 septembre de 18h15 \u00e0 19h30 UTC<\/p>\n<p>Namibie : le 24 septembre de 18h15 \u00e0 19h30 UTC<\/p>\n<p>Oc\u00e9anie : le 24 septembre de 06h21 \u00e0 07h35 UTC<\/p>\n<p>Am\u00e9rique du Sud : le 24 septembre de 06h21 \u00e0 07h35 UTC<\/p>\n<p><strong>Pendant l\u2019\u00e9v\u00e9nement :<\/strong> Les astronomes citoyens d\u2019Afrique (\u00e0 l\u2019est du Ghana), d\u2019Asie du Sud, d\u2019Asie m\u00e9ridionale, d\u2019Asie du Sud-Est et du Moyen-Orient pourront observer Didymos et Dimorphos le 26 septembre de 22h50 \u00e0 23h59 UTC. L\u2019impact de la mission DART devrait se produire vers 23:14:34 UTC, avec une marge de plus ou moins 15 minutes environ. Nous nous attendons \u00e0 d\u00e9tecter un vif \u00e9clat lumineux au moment de l\u2019impact, mais comme il s\u2019agit de la toute premi\u00e8re tentative de d\u00e9viation d\u2019un ast\u00e9ro\u00efde, nous ne sommes pas tout \u00e0 fait s\u00fbrs de ce que nous verrons ! Nous avons donc besoin de vos observations pour le savoir. Cliquez-sur ce<strong><a href=\"unistellar:\/\/science\/defense?ra=50.83249&amp;dec=-33.44359&amp;et=1000&amp;g=30&amp;d=1200&amp;t=1664234040&amp;scitag=p220926ID658031\">\u00a0LIEN<\/a><\/strong>\u00a0depuis votre t\u00e9l\u00e9phone pour commencer votre observation \u00e0 23h00 UTC.<\/p>\n<p><strong>Apr\u00e8s l\u2019\u00e9v\u00e9nement :<\/strong> Un transit de Dimorphos apr\u00e8s l\u2019impact de DART montrera si la nouvelle orbite de l\u2019ast\u00e9ro\u00efde diff\u00e8re des pr\u00e9dictions des scientifiques, et dans quelles proportions. Un transit est pr\u00e9vu apr\u00e8s le test de DART. Il ne sera visible que dans l\u2019h\u00e9misph\u00e8re sud et au Japon, o\u00f9 les astronomes citoyens pourront observer le transit pr\u00e9vu le 27 septembre de 17h40 UTC \u00e0 18h55 UTC. Les observations de ce transit seront extr\u00eamement importantes pour les chercheurs, car elles montreront si l\u2019orbite de Dimorphos a chang\u00e9 comme pr\u00e9vu.[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_text_color=\u00a0\u00bb#B3B3B3&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><em><span>Les donn\u00e9es de ces observations seront partag\u00e9es avec les astronomes de l\u2019Observatoire de Nice en France et de l\u2019Agence Spatiale Europ\u00e9enne ESA.<\/span><\/em><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/10\/nasaDidymos.gif\u00a0\u00bb title_text=\u00a0\u00bbnasaDidymos\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_text_color=\u00a0\u00bb#D6D6D6&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><em>Credit: NASA<\/em><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_2,1_2&Prime; make_equal=\u00a0\u00bbon\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_css_main_element=\u00a0\u00bbdisplay:flex;||flex-direction: row;||align-items: center;\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<h3><strong>Comment observer Didymos et Dimorphos avec votre t\u00e9lescope Unistellar :<\/strong><\/h3>\n<p>Didymos est inclus dans l\u2019App Unistellar. Il est donc facile \u00e0 observer. Vous devez utiliser le mode scientifique de l\u2019App Unistellar, qui se trouve sous l\u2019onglet D\u00e9fense Plan\u00e9taire.\u00a0Tout d\u2019abord, suivez\u00a0<a href=\"https:\/\/www.unistellar.com\/citizen-science\/planetary-defense\/tutorial\/\">le guide pratique A.<\/a>\u00a0La cible de la d\u00e9fense plan\u00e9taire se trouve dans la base de donn\u00e9es de l\u2019application Unistellar.<\/p>\n<p>Dans la zone Recording (Enregistrement), saisissez les informations suivantes :<\/p>\n<ul>\n<li>Pendant l\u2019impact:\u00a0<span>\u00a0<\/span><span>Exposure time (Temps d\u2019exposition) : 1000 ms \/\u00a0<\/span><span>Gain (Gain) : 30 dB \/\u00a0<\/span><span>Duration (Dur\u00e9e) : Deux fois 20 minutes<\/span><\/li>\n<li>Apr\u00e8s l\u2019impact:\u00a0<span>\u00a0<\/span><span>Exposure time (Temps d\u2019exposition) : 3971 ms \/\u00a0<\/span><span>Gain (Gain) : 30 dB \/\u00a0<\/span><span>Duration (Dur\u00e9e) : Deux fois 40 minutes<\/span><\/li>\n<\/ul>\n<p>Vous trouverez des informations suppl\u00e9mentaires sur notre\u00a0<a href=\"https:\/\/www.unistellar.com\/citizen-science\/planetary-defense\/missions\/\">page des missions<\/a>\u00a0de d\u00e9fense plan\u00e9taire.[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2022\/10\/ezgif.com-gif-maker-1.gif\u00a0\u00bb title_text=\u00a0\u00bbezgif.com-gif-maker-1&Prime; _builder_version=\u00a0\u00bb4.18.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><div class=\"et_pb_module dsm_breadcrumbs dsm_breadcrumbs_0\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module_inner\">\n\t\t\t\t\t<nav class=\"dsm_breadcrumbs_wrap\" role=\"navigation\" itemscope=\"\" itemtype=\"http:\/\/schema.org\/SiteNavigationElement\">\n\t\t\t\t<ul class=\"dsm_breadcrumbs\">\n\t\t\t<li class='dsm_breadcrumbs_item dsm_home_item dsm_home_item_custom'>\n\t\t\t\t<a href=\"https:\/\/www.unistellar.com\/fr\/\" itemprop=\"url\">\n\t\t\t\t\t<span class='dsm_home_text_wrapper'>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"et-pb-icon dsm_home_icon\">\ue009<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"dsm_home_text\" itemprop=\"name\">\n\t\t\t\t\t\t\t\tHome\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t<\/a>\n\t\t\t<\/li>\n\n\t\t<li class=\"dsm_breadcrumbs_separator\"> <span class=\"et-pb-icon dsm_separator_icon\">5<\/span><\/li><br \/>\n<b>Warning<\/b>:  Attempt to read property \"term_id\" on null in <b>\/var\/www\/html\/wp\/wp-content\/plugins\/supreme-modules-pro-for-divi\/includes\/modules\/Breadcrumbs\/Breadcrumbs.php<\/b> on line <b>632<\/b><br \/>\n<\/ul>\n\t\t\t<\/nav>\n\t\t\t\t<\/div>\n\t\t\t<\/div>Le 26 septembre, la NASA fera s\u2019\u00e9craser un engin spatial sur un ast\u00e9ro\u00efde pour tester la\u00a0capacit\u00e9 de l\u2019humanit\u00e9 \u00e0 se d\u00e9fendre contre un impact potentiel. C\u2019est un grand moment dans les pr\u00e9paratifs de la\u00a0D\u00e9fense Plan\u00e9taire, dont la mission est d\u2019\u00e9viter l\u2019impact d\u2019ast\u00e9ro\u00efdes sur la Terre. Les astronomes amateurs auront l\u2019occasion d\u2019assister \u00e0 [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":241939,"menu_order":0,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"1080","inline_featured_image":false},"categories":[12],"tags":[57,77,49,74,103,76,68],"articles_categories":[],"class_list":["post-1918","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-citizen-science","tag-asteroid","tag-asteroids-with-moons","tag-citizen-science","tag-dart","tag-dart-fr","tag-didymos","tag-planetary-defense"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.6 (Yoast SEO v25.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nous avons besoin de vos observations sur la mission DART de la NASA - Unistellar<\/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:\/\/www.unistellar.com\/fr\/blog\/observations-nasa-dart-mission\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nous avons besoin de vos observations sur la mission DART de la NASA\" \/>\n<meta property=\"og:description\" content=\"Le 26 septembre, la NASA fera s\u2019\u00e9craser un engin spatial sur un ast\u00e9ro\u00efde pour tester la\u00a0capacit\u00e9 de l\u2019humanit\u00e9 \u00e0 se d\u00e9fendre contre un impact potentiel. C\u2019est un grand moment dans les pr\u00e9paratifs de la\u00a0D\u00e9fense Plan\u00e9taire, dont la mission est d\u2019\u00e9viter l\u2019impact d\u2019ast\u00e9ro\u00efdes sur la Terre. 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