{"id":6731,"date":"2016-11-28T17:52:12","date_gmt":"2016-11-28T17:52:12","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6731"},"modified":"2016-12-05T15:46:45","modified_gmt":"2016-12-05T15:46:45","slug":"comete-45phonda-mrkos-pajdusakova-de-retour","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/11\/28\/comete-45phonda-mrkos-pajdusakova-de-retour\/","title":{"rendered":"La com\u00e8te 45P\/Honda-Mrkos-Pajdusakova est de retour"},"content":{"rendered":"<p><strong>45P\/Honda-Mrkos-Pajdusakova est une jolie com\u00e8te qui devrait occuper les astrophotographes de l&#8217;h\u00e9misph\u00e8re nord dans les prochaines semaines.<\/strong><\/p>\n<p>D\u00e9couverte le 3 d\u00e9cembre 1948 par l&#8217;astronome japonais Minoru Honda (auteur de 12 d\u00e9couvertes com\u00e9taires) puis ind\u00e9pendamment par Antonin Mrkos et Ludmila Pajdusakova, la com\u00e8te p\u00e9riodique 45P\/Honda-Mrkos-Pajdusakova a un noyau dont la taille est estim\u00e9e \u00e0 moins d&#8217;un kilom\u00e8tre et circule sur une orbite \u00e0 courte p\u00e9riode qui la ram\u00e8ne \u00e0 proximit\u00e9 du <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/11\/09\/coucher-de-soleil-derriere-lobservatoire-du-pic-du-midi\/\" target=\"_blank\">Soleil<\/a> (et de la Terre) tous les 5,25 ans.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/comete.jpg\" rel=\"lightbox[6731]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6734\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/comete-450x314.jpg\" alt=\"comete\" width=\"450\" height=\"314\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/comete-450x314.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/comete-768x535.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/comete.jpg 1000w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Il ne s&#8217;agit pas d&#8217;un astre chevelu \u00e0 la port\u00e9e du grand public comme l&#8217;ont \u00e9t\u00e9 <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/25\/printemps-1996-la-comete-hyakutake-fait-le-spectacle\/\" target=\"_blank\">Hyakutake<\/a> en 1996 et <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/23\/la-grande-comete-hale-bopp-a-ete-decouverte-il-y-a-20-ans\/\" target=\"_blank\">Hale-Bopp<\/a> en 1997 puisque lors de sa plus belle apparition en 2011 (un passage \u00e0 seulement 0,06 Unit\u00e9 Astronomique de la Terre le 15 ao\u00fbt, soit 9 millions de kilom\u00e8tres, immortalis\u00e9 par l\u2019astrophotographe autrichien <a href=\"http:\/\/cometpieces-at.webnode.at\/\" target=\"_blank\">Michael J\u00e4ger<\/a>) sa magnitude n&#8217;a pas d\u00e9pass\u00e9 6,5 (elle n&#8217;\u00e9tait donc pas visible \u00e0 l&#8217;oeil nu).<!--more--><\/p>\n<p>Le retour de la com\u00e8te en cette fin d&#8217;ann\u00e9e sera donc r\u00e9serv\u00e9 aux heureux possesseurs d&#8217;un t\u00e9lescope ou d&#8217;une lunette astronomique\u00a0; \u00e0 la mi-d\u00e9cembre 45P\/Honda-Mrkos-Pajdusakova devrait \u00eatre un objet de dixi\u00e8me magnitude et elle atteindra son \u00e9clat maximal (de l&#8217;ordre de 7) en janvier-f\u00e9vrier (elle passera \u00e0 0,09 UA de la Terre le 11 f\u00e9vrier).<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/carte.jpg\" rel=\"lightbox[6731]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6733\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/carte-450x274.jpg\" alt=\"carte\" width=\"450\" height=\"274\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/carte-450x274.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/carte-768x467.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/11\/carte.jpg 926w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>En d\u00e9cembre on pourra la rechercher en d\u00e9but de nuit dans la constellation du Sagittaire puis du Capricorne (elle passera \u00e0 proximit\u00e9 de l&#8217;amas globulaire Messier 75 le 14). En janvier elle sera trop proche du Soleil pour \u00eatre observable (8\u00b0 de s\u00e9paration avec notre \u00e9toile le 25 janvier) puis on la retrouvera ensuite avant l&#8217;aube d\u00e9but f\u00e9vrier pour la voir se d\u00e9placer tr\u00e8s rapidement en quelques jours seulement entre les constellations de l&#8217;Aigle, d&#8217;Hercule et du Bouvier.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>45P\/Honda-Mrkos-Pajdusakova est une jolie com\u00e8te qui devrait occuper les astrophotographes de l&#8217;h\u00e9misph\u00e8re nord dans les prochaines semaines. D\u00e9couverte le 3 d\u00e9cembre 1948 par l&#8217;astronome japonais Minoru Honda (auteur de 12 d\u00e9couvertes com\u00e9taires) puis ind\u00e9pendamment par Antonin Mrkos et Ludmila Pajdusakova, la com\u00e8te p\u00e9riodique 45P\/Honda-Mrkos-Pajdusakova a un noyau dont la taille est estim\u00e9e \u00e0 moins d&#8217;un &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/11\/28\/comete-45phonda-mrkos-pajdusakova-de-retour\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La com\u00e8te 45P\/Honda-Mrkos-Pajdusakova est de retour<\/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":6734,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[1931,93,1395,1394,895],"class_list":["post-6731","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-45phonda-mrkos-pajdusakova","tag-comete","tag-comete-hale-bopp","tag-comete-hyakutake","tag-michael-jager"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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