{"id":9692,"date":"2018-10-13T08:26:49","date_gmt":"2018-10-13T08:26:49","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=9692"},"modified":"2018-10-21T07:55:33","modified_gmt":"2018-10-21T07:55:33","slug":"admirez-une-derniere-fois-jupiter-en-soiree","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/","title":{"rendered":"Admirez une derni\u00e8re fois Jupiter en soir\u00e9e"},"content":{"rendered":"

Ce sont les derniers soirs pour apercevoir la plan\u00e8te Jupiter sur l’horizon avant sa conjonction solaire le 26 novembre prochain.\u00a0<\/strong><\/p>\n

Le\u00a0 9 mai 2018 Jupiter passait \u00e0 l\u2019opposition (alignement Soleil<\/a>-Terre-Jupiter) \u00e0 658 millions de km de nous, soit un diam\u00e8tre apparent de 44,8 sec d\u2019arc et une\u00a0magnitude<\/a>\u00a0de -2,5. En 2017 l\u2019opposition s\u2019\u00e9tait produite le 7 avril, la plan\u00e8te gazeuse g\u00e9ante se trouvant alors 7 millions de km plus loin de nous (ce qui ne change gu\u00e8re le diam\u00e8tre apparent de l\u2019astre).<\/p>\n

\"\"<\/a>
Jupiter \u00e0 l’horizon en d\u00e9but de soir\u00e9e le 11 octobre. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n

Cinq mois plus tard la cinqui\u00e8me plan\u00e8te du Syst\u00e8me solaire n’est plus qu’un point brillant visible sur l’horizon SUD-OUEST.<\/p>\n

La\u00a0plan\u00e8te gazeuse g\u00e9ante<\/a>\u00a0est tr\u00e8s suivie par les astronomes, qu\u2019ils soient amateurs ou professionnels, et ce pour deux raisons : d\u2019une part son diam\u00e8tre apparent est le plus important de toutes les plan\u00e8tes du Syst\u00e8me solaire et d\u2019autre part il y a toujours quelque chose \u00e0 admirer \u00e0 sa surface (bandes gazeuses et passage de la\u00a0Grande Tache Rouge<\/a>) ou autour (ballet des 4 principaux satellites qui sont Io,\u00a0Europe<\/a>, Ganym\u00e8de et\u00a0Callisto<\/a>).<\/p>\n

Mais il est trop tard pour faire de telles observations : m\u00eame si le diam\u00e8tre apparent de Jupiter est encore respectable (environ 32″), sa position sur l’horizon rend impossible des observations de qualit\u00e9 en raison de la turbulence atmosph\u00e9rique. Apr\u00e8s sa conjonction solaire le 26 novembre (alignement Terre-Soleil-Jupiter) il faudra attendre la seconde quinzaine du mois de d\u00e9cembre pour retrouver la g\u00e9ante gazeuse \u00e0 l’aube.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ce sont les derniers soirs pour apercevoir la plan\u00e8te Jupiter sur l’horizon avant sa conjonction solaire le 26 novembre prochain.\u00a0 Le\u00a0 9 mai 2018 Jupiter passait \u00e0 l\u2019opposition (alignement Soleil-Terre-Jupiter) \u00e0 658 millions de km de nous, soit un diam\u00e8tre apparent de 44,8 sec d\u2019arc et une\u00a0magnitude\u00a0de -2,5. En 2017 l\u2019opposition s\u2019\u00e9tait produite le 7 … Continuer la lecture de Admirez une derni\u00e8re fois Jupiter en soir\u00e9e<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":9693,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[193,90],"class_list":["post-9692","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-conjonction","tag-jupiter"],"yoast_head":"\nAdmirez une derni\u00e8re fois Jupiter en soir\u00e9e<\/title>\n<meta name=\"description\" content=\"Ce sont les derniers soirs pour apercevoir la plan\u00e8te Jupiter sur l'horizon avant sa conjonction solaire le 26 novembre prochain.\u00a0\" \/>\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\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Admirez une derni\u00e8re fois Jupiter en soir\u00e9e\" \/>\n<meta property=\"og:description\" content=\"Ce sont les derniers soirs pour apercevoir la plan\u00e8te Jupiter sur l'horizon avant sa conjonction solaire le 26 novembre prochain.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/\" \/>\n<meta property=\"og:site_name\" content=\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\" \/>\n<meta property=\"article:published_time\" content=\"2018-10-13T08:26:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-10-21T07:55:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/10\/jupiter-lune.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1450\" \/>\n\t<meta property=\"og:image:height\" content=\"895\" \/>\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\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/\",\"name\":\"Admirez une derni\u00e8re fois Jupiter en soir\u00e9e\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/10\/jupiter-lune.jpg\",\"datePublished\":\"2018-10-13T08:26:49+00:00\",\"dateModified\":\"2018-10-21T07:55:33+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea\"},\"description\":\"Ce sont les derniers soirs pour apercevoir la plan\u00e8te Jupiter sur l'horizon avant sa conjonction solaire le 26 novembre prochain.\u00a0\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/13\/admirez-une-derniere-fois-jupiter-en-soiree\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/10\/jupiter-lune.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/10\/jupiter-lune.jpg\",\"width\":1450,\"height\":895,\"caption\":\"Jupiter\"},{\"@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\":\""J'ai en moi un besoin terrible. 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