{"id":21060,"date":"2025-10-10T16:15:27","date_gmt":"2025-10-10T14:15:27","guid":{"rendered":"https:\/\/reperes-astro.fr\/?p=21060"},"modified":"2025-10-22T19:22:41","modified_gmt":"2025-10-22T17:22:41","slug":"le-calendrier-des-cometes-2025-2026","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/le-calendrier-des-cometes-2025-2026\/","title":{"rendered":"Le Calendrier des Com\u00e8tes 2025 &#8211; 2026"},"content":{"rendered":"\n<p>Voici le Calendrier des Com\u00e8tes 2025 &#8211; 2026. Il a pour but de vous indiquer quelle est le moment le plus propice pour observer ces \u00e9v\u00e8nements plut\u00f4t rares.<\/p>\n\n\n\n<p>Fort de ces informations vous pouvez consulter l&rsquo;article \u00ab\u00a0<strong><a href=\"https:\/\/reperes-astro.fr\/tutoriel-ajouter-une-comete-dans-stellarium\/\">Comment ajouter une com\u00e8te dans Stellarium<\/a><\/strong>\u00a0\u00bb afin de savoir o\u00f9 regarder pour voir la com\u00e8te du moment.<\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n<\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/calendrier-cometes-2025-2026.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1013\" height=\"452\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/calendrier-cometes-2025-2026.jpg\" alt=\"Le Calendrier des Com\u00e8tes\" class=\"wp-image-21062\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/calendrier-cometes-2025-2026.jpg 1013w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/calendrier-cometes-2025-2026-300x134.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/calendrier-cometes-2025-2026-768x343.jpg 768w\" sizes=\"auto, (max-width: 1013px) 100vw, 1013px\" \/><\/a><figcaption class=\"wp-element-caption\">\u00a9<a href=\"https:\/\/vitotechnology.com\/\">Vito Technology, Inc.<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"45\" height=\"40\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/jumelles.jpg\" alt=\"Le Calendrier des Com\u00e8tes\" class=\"wp-image-21063\"\/><\/figure>\n<\/div>\n\n\n<p>Visible avec des jumelles.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"45\" height=\"40\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/telescope.jpg\" alt=\"Le Calendrier des Com\u00e8tes\" class=\"wp-image-21064\"\/><\/figure>\n<\/div>\n\n\n<p>Visible avec une lunette.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/hemisphere-nord.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"45\" height=\"40\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/hemisphere-nord.jpg\" alt=\"Le Calendrier des Com\u00e8tes\" class=\"wp-image-21065\"\/><\/a><\/figure>\n<\/div>\n\n\n<p>Visible dans l&rsquo;h\u00e9misph\u00e8re Nord.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/hemisphere-sud.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"45\" height=\"40\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/hemisphere-sud.jpg\" alt=\"\" class=\"wp-image-21066\"\/><\/a><\/figure>\n<\/div>\n\n\n<p>Visible dans l&rsquo;h\u00e9misph\u00e8re Sud.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/perihelie.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"40\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2025\/10\/perihelie.jpg\" alt=\"\" class=\"wp-image-21067\"\/><\/a><\/figure>\n<\/div>\n\n\n<p>P\u00e9rih\u00e9lie*.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-small-font-size\">* Le&nbsp;<strong>p\u00e9rih\u00e9lie<\/strong>&nbsp;est le&nbsp;point&nbsp;de la&nbsp;trajectoire&nbsp;d&rsquo;un&nbsp;objet c\u00e9leste&nbsp;en&nbsp;orbite h\u00e9liocentrique (autour du Soleil)&nbsp;qui est&nbsp;le plus proche&nbsp;du Soleil.<\/p>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n<\/div>\n\n\n\n<p><strong>C\/2025 R2 (SWAN)<\/strong> : <strong>Actuellement, la com\u00e8te est surtout visible depuis l\u2019h\u00e9misph\u00e8re sud<\/strong>. Depuis les latitudes nord, son \u00e9longation (distance angulaire par rapport au Soleil) est encore faible.&nbsp;<strong>La com\u00e8te est apparue dans l\u2019h\u00e9misph\u00e8re nord au d\u00e9but d\u2019octobre<\/strong>, basse sur l\u2019horizon sud-ouest apr\u00e8s le coucher du Soleil, dans la constellation de la Balance.&nbsp;<strong>Au fil de l\u2019automne, la visibilit\u00e9 dans le nord s\u2019am\u00e9liorera progressivement<\/strong>, atteignant environ 60\u00b0 d\u2019\u00e9longation fin octobre.<\/p>\n\n\n\n<p><strong>C\/2025 K1 (ATLAS)<\/strong> : Malheureusement, les pr\u00e9visions optimistes ne se sont pas r\u00e9alis\u00e9es et la com\u00e8te C\/2025 K1 (ATLAS) ne montre pas d\u2019\u00e9claircissement notable \u00e0 l\u2019approche de son p\u00e9rih\u00e9lie. Sa magnitude reste autour de 9\u201310, ce qui la rend visible uniquement sous un ciel tr\u00e8s sombre avec de puissantes jumelles ou, mieux encore, un t\u00e9lescope. Les observateurs de l\u2019h\u00e9misph\u00e8re nord la verront le mieux le matin, tandis que ceux du sud pourront la rep\u00e9rer \u00e0 la fois le soir et le matin. En raison de sa proximit\u00e9 avec le Soleil, sa survie lors du p\u00e9rih\u00e9lie reste incertaine.<\/p>\n\n\n\n<p><strong>C\/2025 A6 (LEMMON) <\/strong>: \u00c0 la fin d\u2019octobre 2025, la&nbsp;com\u00e8te Lemmon&nbsp;passera \u00e0 seulement 0,6 UA de la Terre,&nbsp;<strong>parfaitement plac\u00e9e dans le ciel du soir pour les observateurs de l\u2019h\u00e9misph\u00e8re nord<\/strong>. En octobre et novembre, elle pourrait atteindre une magnitude d\u2019environ 5 et devenir&nbsp;<strong>visible aux jumelles<\/strong>. Il est m\u00eame possible que C\/2025 A6 (Lemmon)&nbsp;<strong>devienne encore plus brillante (autour de la magnitude 3)<\/strong>, car ces com\u00e8tes ont tendance \u00e0 s\u2019illuminer fortement pr\u00e8s du p\u00e9rih\u00e9lie. Croisons les doigts !<\/p>\n\n\n\n<p><strong>210P\/Christensen<\/strong> : <strong>Fin novembre 2025<\/strong>, la com\u00e8te 210P\/Christensen pourrait \u00eatre suffisamment brillante pour \u00eatre observ\u00e9e aux jumelles. Elle appara\u00eetra basse dans le ciel de l\u2019est avant l\u2019aube \u2014 regardez pr\u00e8s de l\u2019horizon d\u00e8s que le ciel devient sombre. Avant cela, elle restera trop faible et trop proche de l\u2019\u00e9blouissement solaire pour \u00eatre visible.<\/p>\n\n\n\n<p><strong>C\/2025 N1 (ATLAS)<\/strong> : <strong>C\/2025 N1 (ATLAS), \u00e9galement d\u00e9sign\u00e9e&nbsp;<strong>3I\/ATLAS<\/strong>, est une rare visiteuse interstellaire<\/strong>&nbsp;qui deviendra visible \u00e0 partir de la fin novembre 2025. Dans les sc\u00e9narios les plus optimistes, elle pourrait atteindre une magnitude de 8, devenant visible \u00e0 l\u2019aube avec de petits t\u00e9lescopes ou m\u00eame des jumelles depuis les deux h\u00e9misph\u00e8res.&nbsp;<strong>Des estimations plus conservatrices (et r\u00e9alistes) pr\u00e9voient un pic autour de la magnitude 12, n\u00e9cessitant un t\u00e9lescope de 20 cm sous un ciel sombre.<\/strong>&nbsp;Pr\u00e8s du p\u00e9rih\u00e9lie, elle ne sera pas visible \u2014 la Terre et la com\u00e8te seront de part et d\u2019autre du Soleil.<\/p>\n\n\n\n<p>C\/2024 E1 (Wierzchos) : \u00c0 l\u2019automne 2025, la com\u00e8te pourrait \u00eatre visible avec&nbsp;<strong>de petits t\u00e9lescopes ou des jumelles<\/strong>&nbsp;pour les observateurs de l\u2019h\u00e9misph\u00e8re nord. Ensuite, en s\u2019approchant du p\u00e9rih\u00e9lie, elle sera trop proche du Soleil pour \u00eatre observable. Apr\u00e8s le p\u00e9rih\u00e9lie, elle sera mieux visible depuis l\u2019h\u00e9misph\u00e8re sud et pourrait \u00eatre&nbsp;<strong>visible aux jumelles<\/strong>.<\/p>\n\n\n\n<p><strong>24P\/Schaumasse<\/strong> : La com\u00e8te Schaumasse atteindra son maximum de luminosit\u00e9 d\u00e9but 2026 et pourrait devenir&nbsp;<strong>visible aux jumelles<\/strong>. Avant cela, du 8 au 11 novembre 2025, elle passera pr\u00e8s du c\u00e9l\u00e8bre amas de la Cr\u00e8che (M44), offrant une belle opportunit\u00e9 photographique.<\/p>\n\n\n\n<p><strong>C\/2025 R3 PanSTARRS<\/strong> : On s\u2019attend \u00e0 ce que la&nbsp;com\u00e8te C\/2025 R3&nbsp;atteigne la magnitude 8 \u2014 trop faible pour \u00eatre vue \u00e0 l\u2019\u0153il nu, mais potentiellement visible aux jumelles sous un ciel sombre. Il existe une l\u00e9g\u00e8re possibilit\u00e9 qu\u2019elle s\u2019\u00e9claire jusqu\u2019\u00e0 la magnitude 3 en raison de la diffusion avant, la rendant visible \u00e0 l\u2019\u0153il nu. Le meilleur moment pour l\u2019observer sera entre fin avril et d\u00e9but mai 2026, lorsqu\u2019elle sera basse dans le ciel du cr\u00e9puscule. La visibilit\u00e9 d\u00e9pendra de votre position : les observateurs du nord pourront la voir le matin fin avril, et ceux du sud le soir d\u00e9but mai.<\/p>\n\n\n\n<p><strong>10P\/Tempel 2<\/strong> : \u00c0 partir de juillet 2026, 10P\/Tempel 2 appara\u00eetra dans le ciel du soir apr\u00e8s le coucher du Soleil. Elle sera visible depuis les deux h\u00e9misph\u00e8res ; dans l\u2019h\u00e9misph\u00e8re sud, elle montera plus haut \u00e0 l\u2019horizon que dans le nord. Vers le p\u00e9rih\u00e9lie, elle devrait atteindre une magnitude de 8,0 \u2014 facilement visible avec des jumelles ou un petit t\u00e9lescope.<\/p>\n\n\n\n<p class=\"has-text-align-right\">Source : <a href=\"https:\/\/starwalk.space\/fr\/news\/upcoming-comets\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>https:\/\/starwalk.space\/<\/strong><\/a><\/p>\n\n\n\n<p><\/p>\n<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_21060\" class=\"pvc_stats all  \" data-element-id=\"21060\" 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>Voici le Calendrier des Com\u00e8tes 2025 &#8211; 2026. Il a pour but de vous indiquer quelle est le moment le plus&#46;&#46;&#46;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_21060\" class=\"pvc_stats all  \" data-element-id=\"21060\" 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":11,"featured_media":20829,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53,14],"tags":[],"class_list":["post-21060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cometes","category-observations"],"yoast_head":"<title>Le Calendrier des Com\u00e8tes 2025 - 2026 - Rep\u00e8res Astro<\/title>\n<meta name=\"description\" content=\"Le Calendrier des Com\u00e8tes 2025 - 2026. 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