{"id":12727,"date":"2020-10-29T14:26:16","date_gmt":"2020-10-29T14:26:16","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=12727"},"modified":"2020-11-09T18:10:22","modified_gmt":"2020-11-09T18:10:22","slug":"c-2020-m3-atlas-la-comete-qui-va-traverser-orion","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/10\/29\/c-2020-m3-atlas-la-comete-qui-va-traverser-orion\/","title":{"rendered":"C\/2020 M3 (Atlas), la com\u00e8te qui va traverser Orion"},"content":{"rendered":"<p><strong>Une nouvelle com\u00e8te, C\/2020 M3 (Atlas), a fait son apparition. Particularit\u00e9 : elle va traverser la tr\u00e8s belle constellation d&#8217;Orion en novembre.<\/strong><\/p>\n<h5>Une nouvelle com\u00e8te :<\/h5>\n<p>L&#8217;actualit\u00e9 du ciel en novembre semble assez maigre comme nous le rappelle Fran\u00e7ois Aru dans cette \u00e9dition de <em>Planetaria, l&#8217;agenda des \u00e9toiles<\/em>. Mais une nouvelle com\u00e8te va sans doute int\u00e9resser les astrophotographes aguerris :<\/p>\n<p><iframe loading=\"lazy\" title=\"Planetaria, l&#039;agenda des \u00e9toiles : Novembre\" width=\"474\" height=\"267\" src=\"https:\/\/www.youtube.com\/embed\/9RLJB6AbY6o?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Avec C\/2020 M3 (Atlas), ne vous attendez pas au spectacle que nous a offert la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/08\/25\/la-comete-neowise-immortalisee-par-le-telescope-hubble\/\" target=\"_blank\" rel=\"noopener noreferrer\">com\u00e8te Neowise<\/a> cet \u00e9t\u00e9. D\u00e9couverte par le r\u00e9seau de surveillance ATLAS (<a href=\"https:\/\/fallingstar.com\/home.php\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Asteroid Terrestrial-impact Last Alert System<\/em><\/a>), C\/2020 M3 sera un astre chevelu beaucoup plus discret. Les astronomes estiment que sa <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener noreferrer\">magnitude<\/a> ne devrait pas exc\u00e9der 8. Elle sera donc r\u00e9serv\u00e9e aux possesseurs de gros t\u00e9lescopes.<\/p>\n<figure id=\"attachment_12728\" aria-describedby=\"caption-attachment-12728\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas.jpg\" rel=\"lightbox[12727]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-12728\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-12728\" class=\"wp-caption-text\">La com\u00e8te C\/2020 M3 (Atlas) va traverser Orion en novembre. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Mais ces derniers vont avoir la possibilit\u00e9 de faire de tr\u00e8s belles images. Cette com\u00e8te va en effet traverser la constellation d&#8217;Orion au mois de novembre. <!--more--><\/p>\n<h5>Zoom sur un chasseur c\u00e9leste :<\/h5>\n<p>La c\u00e9l\u00e8bre constellation d\u2019Orion est incontournable \u00e0 cette \u00e9poque de l&#8217;ann\u00e9e. Elle nous raconte l\u2019histoire d\u2019un chasseur arrogant. Dans la mythologie grecque le g\u00e9ant Orion passait son temps \u00e0 se vanter de ses prouesses. Exasp\u00e9r\u00e9e, H\u00e9ra, s\u0153ur et femme de Zeus, lui envoya un scorpion qui le piqua et le tua. Orion et Scorpion furent alors plac\u00e9s aux deux extr\u00e9mit\u00e9s du ciel pour ne jamais se rencontrer. L\u2019un se couche quand l\u2019autre se l\u00e8ve. L&#8217;\u00e9paule droite du chasseur est symbolis\u00e9e par B\u00e9telgeuse. Cette \u00e9toile g\u00e9ante rouge a connu une spectaculaire baisse d&#8217;\u00e9clat l&#8217;hiver dernier. Un <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/etoile-betelgeuse-hubble-resolu-mystere-son-assombrissement-79164\/\" target=\"_blank\" rel=\"noopener noreferrer\">myst\u00e8re r\u00e9solu par le t\u00e9lescope Hubble<\/a>.<\/p>\n<figure id=\"attachment_7407\" aria-describedby=\"caption-attachment-7407\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/02\/orion_sanary.jpg\" rel=\"lightbox[12727]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-7407\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/02\/orion_sanary-450x299.jpg\" alt=\"\" width=\"450\" height=\"299\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/02\/orion_sanary-450x299.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/02\/orion_sanary-768x511.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/02\/orion_sanary-1024x681.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/02\/orion_sanary.jpg 1353w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-7407\" class=\"wp-caption-text\">La constellation Orion au-dessus de la M\u00e9diterran\u00e9e. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<h5>Aubaine pour les astrophotographes :<\/h5>\n<p>Comme toutes les com\u00e8tes, C\/2020 M3 (Atlas) sera un bel objet \u00e0 imager, en particulier lorsqu&#8217;elle passera dans le champ d&#8217;un astre photog\u00e9nique. La preuve avec le clich\u00e9 ci-dessous. R\u00e9alis\u00e9 le 27 septembre par <a href=\"https:\/\/www.instagram.com\/cometografia\/\" target=\"_blank\" rel=\"noopener noreferrer\">Jos\u00e9 J. Chamb\u00f3 Bris<\/a>, il nous montre l&#8217;astre chevelu (boule verte diffuse en bas \u00e0 gauche) passant non loin de NGC 1532. Il s&#8217;agit d&#8217;une galaxie spirale barr\u00e9e dans la constellation de l&#8217;\u00c9ridan. Situ\u00e9e \u00e0 environ 47 millions d&#8217;ann\u00e9es-lumi\u00e8re de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/08\/26\/en-video-quest-ce-que-la-voie-lactee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Voie lact\u00e9e<\/a>, elle a \u00e9t\u00e9 d\u00e9couverte par l&#8217;astronome australien\u00a0James Dunlop\u00a0en\u00a01826.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3.jpg\" rel=\"lightbox[12727]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-12729\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3-450x450.jpg\" alt=\"\" width=\"450\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3-450x450.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3-1024x1024.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3-150x150.jpg 150w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3-768x768.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas3.jpg 1200w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<h5>Rencontres c\u00e9lestes :<\/h5>\n<p>Avis aux astrophotographes, la com\u00e8te passera non loin des joyaux d&#8217;Orion d\u00e9but novembre. Des photographies grand champ permettront d&#8217;immortaliser C\/2020 M3 (Atlas) dans le m\u00eame champ que M 42 la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/01\/16\/nebuleuse-dorion-se-devoile-ciel-noir-dalqueva\/\" target=\"_blank\" rel=\"noopener noreferrer\">grande n\u00e9buleuse d&#8217;Orion<\/a>. Autour du 10 novembre l&#8217;astre chevelu ne sera pas tr\u00e8s loin de l&#8217;embl\u00e9matique IC 434, la <a href=\"https:\/\/www.futura-sciences.com\/sciences\/photos\/univers-ciel-profond-vu-astrophotographes-images-510\/photos-ic434-tete-cheval-847\/\" target=\"_blank\" rel=\"noopener noreferrer\">n\u00e9buleuse de la T\u00eate de cheval<\/a>. Les 16 et 17 la com\u00e8te a rendez-vous avec l&#8217;\u00e9clatante \u00e9toile Bellatrix (deux semaines apr\u00e8s sa rencontre avec Rigel). Bien entendu ces rapprochements ne sont qu&#8217;apparents. La com\u00e8te circule \u00e0 quelques centaines de millions de kilom\u00e8tres alors que la distance des n\u00e9buleuses et \u00e9toiles crois\u00e9es se compte en centaines d&#8217;ann\u00e9es-lumi\u00e8re. Enfin on pourra tenter de saisir une belle \u00e9toile filante avec la com\u00e8te. Pourquoi pas une de celles qui sont issues de<a href=\"https:\/\/www.futura-sciences.com\/sciences\/definitions\/astronomie-leonides-4054\/\" target=\"_blank\" rel=\"noopener noreferrer\"> l&#8217;essaim des L\u00e9onides<\/a> actif \u00e0 cette \u00e9poque de l&#8217;ann\u00e9e ?<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas2.jpg\" rel=\"lightbox[12727]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-12730\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas2-355x450.jpg\" alt=\"\" width=\"355\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas2-355x450.jpg 355w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/10\/atlas2.jpg 565w\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" \/><\/a><\/p>\n<p><strong>Vous pourriez aimer :<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/07\/19\/la-comete-neowise-dans-le-parc-naturel-regional-du-morvan\/\" target=\"_blank\" rel=\"noopener noreferrer\">La com\u00e8te Neowise dans le Parc Naturel R\u00e9gional du Morvan<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/10\/22\/les-etoiles-dorion-un-roman-historique-a-decouvrir\/\" target=\"_blank\" rel=\"noopener noreferrer\">Les \u00e9toiles d&#8217;Orion, un roman historique \u00e0 d\u00e9couvrir<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/05\/10\/a-pompei-une-mosaique-illustre-le-mythe-dorion-et-du-scorpion\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pomp\u00e9i : une mosa\u00efque illustre le mythe d\u2019Orion et du Scorpion<\/a><\/li>\n<\/ul>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Une nouvelle com\u00e8te, C\/2020 M3 (Atlas), a fait son apparition. Particularit\u00e9 : elle va traverser la tr\u00e8s belle constellation d&#8217;Orion en novembre. Une nouvelle com\u00e8te : L&#8217;actualit\u00e9 du ciel en novembre semble assez maigre comme nous le rappelle Fran\u00e7ois Aru dans cette \u00e9dition de Planetaria, l&#8217;agenda des \u00e9toiles. Mais une nouvelle com\u00e8te va sans doute &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/10\/29\/c-2020-m3-atlas-la-comete-qui-va-traverser-orion\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">C\/2020 M3 (Atlas), la com\u00e8te qui va traverser Orion<\/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":12728,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[2932,354],"class_list":["post-12727","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-c-2020-m3-atlas","tag-constellation-dorion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\/2020 M3 (Atlas), la com\u00e8te qui va traverser Orion<\/title>\n<meta name=\"description\" content=\"Une nouvelle com\u00e8te, C\/2020 M3 (Atlas), a fait son apparition. 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