{"id":7523,"date":"2018-11-18T11:32:07","date_gmt":"2018-11-18T10:32:07","guid":{"rendered":"http:\/\/jalle-astro.fr\/wp\/?p=7523"},"modified":"2023-03-04T11:40:29","modified_gmt":"2023-03-04T10:40:29","slug":"le-grand-soir-de-la-comete-46p-wirtanen","status":"publish","type":"post","link":"http:\/\/jalle-astro.fr\/wp\/le-grand-soir-de-la-comete-46p-wirtanen\/","title":{"rendered":"Le grand soir de la Com\u00e8te 46P\/Wirtanen"},"content":{"rendered":"<p>A l\u2019occasion du passage de la Com\u00e8te 46P\/Wirtanen, Jalle Astronomie organise le vendredi 14 d\u00e9cembre 2018 \u00e0 partir de 21 h, une soir\u00e9e d\u2019observation sp\u00e9ciale, ouverte au public et gratuite <a href=\"https:\/\/goo.gl\/maps\/cQrSkHUVyaA2\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\"> au Parc des Sports et des Loisirs Colette Besson <\/span><\/a> \u00e0 Martignas sur Jalle. L\u2019Observatoire Jalle Astronomie sera accessible \u00e0 tous, en mode visuel. Dans son environnement imm\u00e9diat, plusieurs lunettes et t\u00e9lescopes seront \u00e9galement mis en station.<\/p>\n<p>46P\/Wirtanen aurait pu \u00eatre une Com\u00e8te c\u00e9l\u00e8bre en accueillant Philae, mais un d\u00e9calage du lancement de la mission depuis Kourou a fait le bonheur de Chouryumov-Gerasimenko qui a magistralement accueilli Rosetta fin 2014.<\/p>\n<p>Ce 14 d\u00e9cembre, c\u2019est bien 46P\/Wirtanen qui nous rendra visite comme tous les 5,4 ans environ. Au plus pr\u00e8s de nous le dimanche 16 (11,5 millions de km) elle sera \u00e9galement tr\u00e8s pr\u00e8s de la Terre le 14, \u00e0 environ 11,8 millions de km, soit 30 fois la distance Terre-Lune. Elle passera \u00e0 l\u2019ext\u00e9rieur de l\u2019orbite terrestre. Elle sera donc \u00e0 l\u2019opposition.<\/p>\n<p>Wirtanen est une petite Com\u00e8te dont la taille du noyau est estim\u00e9e \u00e0 1,2 km. La magnitude apparente annonc\u00e9e est comprise dans une fourchette tr\u00e8s large, entre 3 et 7,5. En premi\u00e8re partie de soir\u00e9e, l\u2019observation sera l\u00e9g\u00e8rement contrainte par la pr\u00e9sence de la Lune du 7\u00e8me jour. Mais la Lune passe sous l\u2019horizon peu apr\u00e8s minuit ; il ne sera donc pas trop tard pour observer confortablement la Com\u00e8te.<\/p>\n<p>Mais le 14 d\u00e9cembre et pas tr\u00e8s loin de la Com\u00e8te, les G\u00e9minides seront \u00e0 leur maximum. Nous devrions donc voir aussi, des \u00e9toiles filantes, en grand nombre !<\/p>\n<p>Ci-dessous 2 documents permettant de situer facilement la com\u00e8te qui se d\u00e9placera dans la constellation du Taureau.<\/p>\n<div id='gallery-1' class='gallery galleryid-7523 gallery-columns-2 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen2.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"167\" src=\"http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen2-620x414.jpg\" class=\"attachment-medium size-medium\" alt=\"\" srcset=\"http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen2-620x414.jpg 620w, http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen2-768x512.jpg 768w, http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen2-920x614.jpg 920w, http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen2.jpg 2000w\" sizes=\"auto, (max-width: 250px) 100vw, 250px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen4.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"167\" src=\"http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen4-620x413.jpg\" class=\"attachment-medium size-medium\" alt=\"\" srcset=\"http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen4-620x413.jpg 620w, http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen4-768x512.jpg 768w, http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen4-920x613.jpg 920w, http:\/\/jalle-astro.fr\/wp\/wp-content\/uploads\/2018\/11\/2018_12_14_wirtanen4.jpg 2000w\" sizes=\"auto, (max-width: 250px) 100vw, 250px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<div class=\"fcbkbttn_buttons_block\" id=\"fcbkbttn_left\"><div class=\"fb-share-button  \" data-href=\"http:\/\/jalle-astro.fr\/wp\/le-grand-soir-de-la-comete-46p-wirtanen\/\" data-type=\"button\" data-size=\"small\"><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>A l\u2019occasion du passage de la Com\u00e8te 46P\/Wirtanen, Jalle Astronomie organise le vendredi 14 d\u00e9cembre 2018 \u00e0 partir de 21 h, une soir\u00e9e d\u2019observation sp\u00e9ciale, &hellip;<\/p>\n","protected":false},"author":15,"featured_media":7520,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[267],"tags":[135,269],"class_list":["post-7523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animation","tag-comete","tag-observation"],"_links":{"self":[{"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/posts\/7523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/comments?post=7523"}],"version-history":[{"count":18,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/posts\/7523\/revisions"}],"predecessor-version":[{"id":429951,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/posts\/7523\/revisions\/429951"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/media\/7520"}],"wp:attachment":[{"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/media?parent=7523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/categories?post=7523"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/jalle-astro.fr\/wp\/wp-json\/wp\/v2\/tags?post=7523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}