{"id":5956,"date":"2017-04-23T16:45:57","date_gmt":"2017-04-23T14:45:57","guid":{"rendered":"http:\/\/reperes-astro.fr\/?p=5956"},"modified":"2025-07-04T08:33:41","modified_gmt":"2025-07-04T06:33:41","slug":"nouvelles-du-ciel-et-de-lespace-mis-a-jour-le-23-avril","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/nouvelles-du-ciel-et-de-lespace-mis-a-jour-le-23-avril\/","title":{"rendered":"NOUVELLES DU CIEL ET DE L&rsquo;ESPACE"},"content":{"rendered":"\n<p class=\"has-medium-font-size\"><strong>Pour la troisi\u00e8me fois de l\u2019histoire, des astronomes ont d\u00e9tect\u00e9 dans le Syst\u00e8me solaire un objet issu du milieu interstellaire. <\/strong><\/p>\n\n\n\n<p>Il a \u00e9t\u00e9 nomm\u00e9 C\/2025 N1 (Atlas) car il montre des signes d\u2019activit\u00e9 com\u00e9taire. Le 1er juillet 2025, un objet interstellaire a \u00e9t\u00e9 d\u00e9couvert dans le Syst\u00e8me solaire par un des t\u00e9lescopes au r\u00e9seau Atlas install\u00e9 \u00e0 l\u2019observatoire El Sauce au Chili. Nomm\u00e9 provisoirement A11pl3Z, ce corps de magnitude 18 est situ\u00e9 dans la constellation du Sagittaire. Il a d\u2019abord \u00e9t\u00e9 \u00e9valu\u00e9 comme un ast\u00e9ro\u00efde de 10 km. Puis a r\u00e9v\u00e9l\u00e9 des signes d\u2019activit\u00e9 com\u00e9taire et s\u2019est donc vu attribuer par le Minor Planet Center une d\u00e9nomination de com\u00e8te\u00a0: C\/2025 N1 (Atlas). La taille du noyau a \u00e9t\u00e9 sur\u00e9valu\u00e9e en raison de l\u2019activit\u00e9 com\u00e9taire. Il fait plus probablement de 1 \u00e0 2 km.<\/p>\n\n\n\n<p><em><span style=\"color: #ff0000;\">EN ROUGE RENDEZ VOUS A L&rsquo;OBSERVATOIRE si la m\u00e9t\u00e9o est correcte. Pr\u00e9venir par WHATSAPP (inscrivez vous sur la liste de diffusion) ou par mail<\/span><\/em><\/p>\n\n\n\n<p><em><span style=\"color: #0000ff;\">EN BLEU LES PHASES DE LA LUNE<\/span><\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>A Observer :<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DIMANCHE 7 MAI conjonction JUPITER LUNE<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm-300x300.jpg\" alt=\"\" class=\"wp-image-5960\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm-300x300.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm-150x150.jpg 150w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm-80x80.jpg 80w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm-320x320.jpg 320w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/tableau-lumiere-cendree-70x70-cm.jpg 458w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"wp-element-caption\">CROISSANT et LUMIERE CENDREE<\/figcaption><\/figure>\n<\/div>\n\n\n<li><span style=\"color: #0000ff;\">MERCREDI 10 MAI&nbsp; PLEINE LUNE<\/span><\/li>\n\n\n\n<li>DIMANCHE 14&nbsp; MAI CONJONCTION LUNE SATURNE seconde partie de nuit<\/li>\n\n\n\n<li>LUNDI 15 MAI : observez les quatre lunes Galil\u00e9ennes de Jupiter, elles sont \u00ab\u00a0rang\u00e9es\u00a0\u00bb dans l&rsquo;ordre naturel de IO \u00e0 Callisto<\/li>\n\n\n\n<li><span style=\"color: #0000ff;\">VENDREDI 19 MAI DERNIER QUARTIER<\/span><\/li>\n\n\n\n<li>JEUDI 18 Callisto juste au dessus du p\u00f4le sud de Jupiter. Avec Europe et Io ils forment un beau triangle \u00e0 l&rsquo;est de Juju<\/li>\n\n\n\n<li>LUNDI 22 MAI CONJONCTION LUNE VENUS \u00e0 l&rsquo;aube<\/li>\n\n\n\n<li><span style=\"color: #0000ff;\">JEUDI 25 Nouvelle Lune<\/span><\/li>\n\n\n\n<li>JEUDI 25 quatre lunes de Jupiter align\u00e9es<\/li>\n\n\n\n<li><span style=\"color: #ff0000;\">LUNDI 29 surveillez EUROPE ET IO apr\u00e8s le coucher du soleil<\/span><\/li>\n\n\n\n<p>&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/stellarium-011.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/stellarium-011-300x169.jpg\" alt=\"\" class=\"wp-image-6004\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/stellarium-011-300x169.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2017\/04\/stellarium-011.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"wp-element-caption\">LE 29 MAI<\/figcaption><\/figure>\n<\/div><div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_5956\" class=\"pvc_stats all  \" data-element-id=\"5956\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p><div class=\"pvc_clear\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Pour la troisi\u00e8me fois de l\u2019histoire, des astronomes ont d\u00e9tect\u00e9 dans le Syst\u00e8me solaire un objet issu du milieu interstellaire. Il&#46;&#46;&#46;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5956\" class=\"pvc_stats all  \" data-element-id=\"5956\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"author":2,"featured_media":6004,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108,102,14],"tags":[],"class_list":["post-5956","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archives-reperes-astro-2017","category-archives-reperes-astro","category-observations"],"a3_pvc":{"activated":true,"total_views":16,"today_views":0},"yoast_head":"<title>NOUVELLES DU CIEL ET DE L&#039;ESPACE - Rep\u00e8res Astro<\/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:\/\/reperes-astro.fr\/nouvelles-du-ciel-et-de-lespace-mis-a-jour-le-23-avril\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NOUVELLES DU CIEL ET DE L&#039;ESPACE - Rep\u00e8res Astro\" \/>\n<meta property=\"og:description\" content=\"Pour la troisi\u00e8me fois de l\u2019histoire, des astronomes ont d\u00e9tect\u00e9 dans le Syst\u00e8me solaire un objet issu du milieu interstellaire. 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