{"id":6430,"date":"2016-09-30T05:29:04","date_gmt":"2016-09-30T05:29:04","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6430"},"modified":"2016-10-10T16:28:13","modified_gmt":"2016-10-10T16:28:13","slug":"rendez-vous-entre-mercure-et-la-lune-le-29-septembre","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/09\/30\/rendez-vous-entre-mercure-et-la-lune-le-29-septembre\/","title":{"rendered":"Rendez-vous entre Mercure et la Lune le 29 septembre"},"content":{"rendered":"<p><strong>Vendredi 29 septembre, de retour dans le ciel \u00e0 l&#8217;aube, la plan\u00e8te Mercure \u00e9tait visible aux c\u00f4t\u00e9s d&#8217;un tr\u00e8s fin croissant de vieille Lune.<\/strong><\/p>\n<p>Vous avez quelques jours pour observer la discr\u00e8te Mercure. Plus proche plan\u00e8te du <a title=\"En vid\u00e9o : La Station spatiale passe devant le Soleil\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/04\/en-video-la-station-spatiale-passe-devant-le-soleil\/\" target=\"_blank\">Soleil<\/a>, elle\u00a0est toujours d\u00e9licate \u00e0 observer, perdue dans les lueurs de l\u2019aube ou du cr\u00e9puscule.<\/p>\n<p>Le 29 septembre \u00e0 l&#8217;aube le fin croissant de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/09\/28\/fin-croissant-vieille-lune-aube-28-septembre\/\" target=\"_blank\">vieille Lune<\/a> accompagn\u00e9 de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/05\/12\/en-images-lumiere-cendree\/\" target=\"_blank\">lumi\u00e8re cendr\u00e9e<\/a> se trouvait \u00e0 environ 2\u00b0 de Mercure comme le montre la photographie ci-dessous. Il s&#8217;agit bien entendu d&#8217;un rapprochement apparent : la Lune se trouvait alors \u00e0 un peu moins de 400.000 km de la Terre alors que Mercure \u00e9tait \u00e0 une distance proche de 150 millions de km !<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/09\/lune-mercure.jpg\" rel=\"lightbox[6430]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6431\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/09\/lune-mercure-450x323.jpg\" alt=\"lune-mercure\" width=\"450\" height=\"323\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/09\/lune-mercure-450x323.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/09\/lune-mercure-768x552.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/09\/lune-mercure-1024x736.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/09\/lune-mercure.jpg 1253w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Le 28 septembre elle s\u2019est \u00e9cart\u00e9e au maximum de notre \u00e9toile (on parle d\u2019\u00e9longation maximale) et nous disposons de quelques jours pour l\u2019admirer au-dessus de l\u2019horizon EST avec une magnitude tout juste n\u00e9gative (-0,2).\u00a0Ensuite elle<a title=\"Zoom sur le sol de Mercure\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/26\/zoom-sol-mercure\/\" target=\"_blank\">\u00a0<\/a>replongera rapidement en direction du <a title=\"15 images pour d\u00e9tailler un lever de Soleil\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/14\/15-images-pour-detailler-un-lever-de-soleil\/\" target=\"_blank\">Soleil <\/a>et il faudra attendre les premiers jours de d\u00e9cembre pour esp\u00e9rer la revoir au cr\u00e9puscule.<!--more--><\/p>\n<p>N\u2019imaginez pas d\u00e9couvrir des d\u00e9tails \u00e0 sa surface en pointant une\u00a0<a title=\"Bien choisir sa premi\u00e8re lunette astronomique\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/05\/bien-choisir-sa-premiere-lunette-astronomique\/\" target=\"_blank\">lunette astronomique<\/a>\u00a0dans sa direction : toujours tr\u00e8s basse sur l\u2019horizon, la premi\u00e8re plan\u00e8te du Syst\u00e8me solaire ne montre qu\u2019un petit point tremblotant malmen\u00e9 par la turbulence atmosph\u00e9rique, et depuis\u00a0la disparition de l\u2019orbiteur am\u00e9ricain\u00a0<a title=\"Clap de fin pour la sonde Messenger sur Mercure\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/02\/clap-de-fin-pour-la-sonde-messenger-sur-mercure\/\" target=\"_blank\">Messenger<\/a>\u00a0(dont les nombreuses mesures ont permis de r\u00e9aliser la\u00a0carte topographique ci-dessous), il n\u2019y a plus aucune sonde pour \u00e9tudier Mercure.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/MRsaHLfZxbU\" frameborder=\"0\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Vendredi 29 septembre, de retour dans le ciel \u00e0 l&#8217;aube, la plan\u00e8te Mercure \u00e9tait visible aux c\u00f4t\u00e9s d&#8217;un tr\u00e8s fin croissant de vieille Lune. Vous avez quelques jours pour observer la discr\u00e8te Mercure. Plus proche plan\u00e8te du Soleil, elle\u00a0est toujours d\u00e9licate \u00e0 observer, perdue dans les lueurs de l\u2019aube ou du cr\u00e9puscule. Le 29 septembre &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/09\/30\/rendez-vous-entre-mercure-et-la-lune-le-29-septembre\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Rendez-vous entre Mercure et la Lune le 29 septembre<\/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":6431,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[88,140,559,160,1032],"class_list":["post-6430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-lumiere-cendree","tag-mercure","tag-sonde-messenger","tag-systeme-solaire","tag-vieille-lune"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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