{"id":280768,"date":"2025-07-07T10:15:23","date_gmt":"2025-07-07T09:15:23","guid":{"rendered":"https:\/\/www.unistellar.com\/?post_type=blog&p=280768"},"modified":"2025-07-09T09:38:56","modified_gmt":"2025-07-09T08:38:56","slug":"les-ombres-de-titan","status":"publish","type":"blog","link":"https:\/\/www.unistellar.com\/fr\/blog\/les-ombres-de-titan\/","title":{"rendered":"Les ombres de Titan"},"content":{"rendered":"

[et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-579abc80-458a-43b5-90b5-efa821d39207″ custom_padding=\u00a0\u00bb4px||0px|||\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{%22gcid-579abc80-458a-43b5-90b5-efa821d39207%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][dsm_breadcrumbs _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/dsm_breadcrumbs][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_2,1_2″ make_equal=\u00a0\u00bbon\u00a0\u00bb disabled_on=\u00a0\u00bboff|off|off\u00a0\u00bb _builder_version=\u00a0\u00bb4.22.2″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_css_main_element=\u00a0\u00bbalign-items: center;\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2″ _builder_version=\u00a0\u00bb4.22.2″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_line_height=\u00a0\u00bb1.8em\u00a0\u00bb text_font_size_tablet=\u00a0\u00bb16px\u00a0\u00bb text_font_size_phone=\u00a0\u00bb16px\u00a0\u00bb text_font_size_last_edited=\u00a0\u00bbon|phone\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

Le ballet cosmique de Saturne : Un \u00e9t\u00e9 d’\u00e9v\u00e9nements transitoires<\/b><\/h3>\n

 <\/p>\n

Cet \u00e9t\u00e9, la plan\u00e8te aux anneaux Saturne occupe le devant de la sc\u00e8ne dans notre ciel nocturne, offrant aux astronomes amateurs une occasion rare d’observer des \u00e9v\u00e9nements transitoires fascinants. Parmi ces spectacles c\u00e9lestes, les passages de l’ombre de Titan, la plus grande lune de Saturne, promettent d’\u00eatre particuli\u00e8rement captivants. Tout comme nous avons explor\u00e9 pr\u00e9c\u00e9demment les \u00e9clipses de la lune de Jupiter, ces \u00e9v\u00e9nements saturniens offrent une exp\u00e9rience d’observation dynamique qui change d’une nuit \u00e0 l’autre. <\/span><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2″ _builder_version=\u00a0\u00bb4.22.2″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/www.unistellar.com\/wp-content\/uploads\/2025\/07\/Titans-shadows.png\u00a0\u00bb title_text=\u00a0\u00bbLes ombres de Titan\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font=\u00a0\u00bb||||||||\u00a0\u00bb text_font_size=\u00a0\u00bb13px\u00a0\u00bb custom_margin=\u00a0\u00bb||||false|false\u00a0\u00bb custom_padding=\u00a0\u00bb||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

La lune Titan appara\u00eet devant Saturne sur une image captur\u00e9e par la sonde Cassini de la NASA. Cr\u00e9dit : NASA\/JPL-Caltech\/Space Science Institute <\/span><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row make_equal=\u00a0\u00bbon\u00a0\u00bb disabled_on=\u00a0\u00bboff|off|off\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_css_main_element=\u00a0\u00bbalign-items: center;\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.22.2″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

Prochains passages de l’ombre de Titan en temps universel (GMT)<\/span><\/h3>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Date<\/b><\/p>\n<\/th>\n

\n

D\u00e9marrer<\/b><\/p>\n<\/th>\n

\n

\u00c0 mi-parcours<\/b><\/p>\n<\/th>\n

\n

Fin<\/b><\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

\n

15 mai<\/b><\/p>\n<\/td>\n

\n

9:49<\/b><\/p>\n<\/td>\n

\n

12:59<\/b><\/p>\n<\/td>\n

\n

15:44<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

31 mai<\/b><\/p>\n<\/td>\n

\n

9:05<\/b><\/p>\n<\/td>\n

\n

12:12<\/b><\/p>\n<\/td>\n

\n

14:53<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

16 juin<\/b><\/p>\n<\/td>\n

\n

8:21<\/b><\/p>\n<\/td>\n

\n

11:24<\/b><\/p>\n<\/td>\n

\n

14:00<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

2 juillet<\/b><\/p>\n<\/td>\n

\n

7:40<\/b><\/p>\n<\/td>\n

\n

10:35<\/b><\/p>\n<\/td>\n

\n

13:03<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

18 juillet<\/b><\/p>\n<\/td>\n

\n

7:00<\/b><\/p>\n<\/td>\n

\n

9:44<\/b><\/p>\n<\/td>\n

\n

12:05<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

3 ao\u00fbt<\/b><\/p>\n<\/td>\n

\n

6:25<\/b><\/p>\n<\/td>\n

\n

8:52<\/b><\/p>\n<\/td>\n

\n

11:04<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

19 ao\u00fbt<\/b><\/p>\n<\/td>\n

\n

5:52<\/b><\/p>\n<\/td>\n

\n

8:01<\/b><\/p>\n<\/td>\n

\n

10:00<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

4 septembre<\/b><\/p>\n<\/td>\n

\n

5:25<\/b><\/p>\n<\/td>\n

\n

7:09<\/b><\/p>\n<\/td>\n

\n

8:50<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

20 septembre<\/b><\/p>\n<\/td>\n

\n

5:09<\/b><\/p>\n<\/td>\n

\n

6:20<\/b><\/p>\n<\/td>\n

\n

7:34<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

6 octobre<\/b><\/p>\n<\/td>\n

<\/td>\n\n

5:32*<\/b><\/p>\n<\/td>\n

<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

Les heures de d\u00e9but et de fin correspondent au moment o\u00f9 Titan est <\/span><\/i>complet<\/span><\/i> L’ombre de Saturne est la premi\u00e8re et la derni\u00e8re visible \u00e0 l’entr\u00e9e et \u00e0 la sortie du disque de Saturne, respectivement. * L’ombre compl\u00e8te sur le disque n’est visible qu’\u00e0 mi-parcours (source : Sky and Telescopes) <\/span><\/i><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row make_equal=\u00a0\u00bbon\u00a0\u00bb disabled_on=\u00a0\u00bboff|off|off\u00a0\u00bb _builder_version=\u00a0\u00bb4.22.2″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_css_main_element=\u00a0\u00bbalign-items: center;\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.22.2″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

La science derri\u00e8re le spectacle<\/b><\/h3>\n

 <\/p>\n

Ces transits d’ombres se produisent en raison de l’alignement unique de Saturne, de ses anneaux et de ses lunes depuis notre point d’observation sur Terre. Au fur et \u00e0 mesure que Saturne progresse sur son orbite de 29,5 ans autour du Soleil, notre angle de vue change, montrant parfois les anneaux de face (comme en 2018 ou 2033) et les faisant parfois pratiquement dispara\u00eetre, comme en 2025 ou 2040, lorsque la Terre se trouve dans le plan des anneaux et des lunes. Lors de ces p\u00e9riodes d’alignement, on peut observer des lunes et leurs ombres traverser la face de la plan\u00e8te. C’est donc maintenant ou dans 15 ans ! <\/span><\/p>\n

<\/span><\/p>\n

L’ombre de Titan est particuli\u00e8rement visible en raison de la taille de la lune : avec un diam\u00e8tre de 5 150 km, elle est plus grande que Mercure et vient juste apr\u00e8s Ganym\u00e8de, la lune de Jupiter, dans notre syst\u00e8me solaire. Lorsque Titan passe entre Saturne et le Soleil (de notre point de vue), sa taille consid\u00e9rable cr\u00e9e une ombre bien visible sur les sommets des nuages de Saturne. <\/span><\/p>\n

Lorsque vous tournerez votre t\u00e9lescope vers Saturne cet \u00e9t\u00e9, n’oubliez pas que vous assistez \u00e0 une danse cosmique qui se joue depuis des milliards d’ann\u00e9es. Chaque transit offre une occasion unique de se connecter \u00e0 la m\u00e9canique de notre syst\u00e8me solaire et d’appr\u00e9cier la beaut\u00e9 du mouvement c\u00e9leste. <\/span><\/p>\n

Bonne observation !<\/span>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bbgcid-929a6719-4323-4702-bd5a-fabceb4433c2″ global_colors_info=\u00a0\u00bb{%22gcid-929a6719-4323-4702-bd5a-fabceb4433c2%22:%91%22background_color%22%93}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n

Further readings<\/h2>\n

[\/et_pb_text][et_pb_divider color=\u00a0\u00bb#FDB82B\u00a0\u00bb _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb width=\u00a0\u00bb15%\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_divider][dsm_post_carousel post_type=\u00a0\u00bbblog\u00a0\u00bb posts_number=\u00a0\u00bb6″ pagi_color=\u00a0\u00bb#FDB82B\u00a0\u00bb pagi_active_color=\u00a0\u00bb#FDB82B\u00a0\u00bb navi_color=\u00a0\u00bb#FDB82B\u00a0\u00bb post_item_bg_color=\u00a0\u00bbgcid-84086a3f-4df3-4dea-91c2-75d1b92f5c80″ _builder_version=\u00a0\u00bb4.18.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{%22gcid-84086a3f-4df3-4dea-91c2-75d1b92f5c80%22:%91%22post_item_bg_color%22%93}\u00a0\u00bb][\/dsm_post_carousel][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

Cet \u00e9t\u00e9, la plan\u00e8te aux anneaux Saturne occupe le devant de la sc\u00e8ne dans notre ciel nocturne, offrant aux astronomes amateurs une occasion rare d’observer des \u00e9v\u00e9nements transitoires fascinants.<\/p>\n","protected":false},"author":24,"featured_media":280733,"menu_order":0,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false},"categories":[],"tags":[778],"articles_categories":[],"class_list":["post-280768","blog","type-blog","status-publish","has-post-thumbnail","hentry","tag-planet-observation-deep-sky-objects-smart-telescope-fr"],"acf":[],"yoast_head":"\nLes ombres de Titan - Unistellar<\/title>\n<meta name=\"description\" content=\"Chaque mois, d\u00e9couvrez trois \u00e9v\u00e9nements c\u00e9lestes incontournables \u00e0 observer avec votre t\u00e9lescope Unistellar.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.unistellar.com\/fr\/blog\/les-ombres-de-titan\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les ombres de Titan\" \/>\n<meta property=\"og:description\" content=\"Chaque mois, d\u00e9couvrez trois \u00e9v\u00e9nements c\u00e9lestes incontournables \u00e0 observer avec votre t\u00e9lescope Unistellar.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.unistellar.com\/fr\/blog\/les-ombres-de-titan\/\" \/>\n<meta property=\"og:site_name\" content=\"Unistellar\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/unistellaroptics\/\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-09T08:38:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.unistellar.com\/wp-content\/uploads\/2025\/07\/Titans-shadows.png\" \/>\n\t<meta property=\"og:image:width\" content=\"605\" \/>\n\t<meta property=\"og:image:height\" content=\"454\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@unistellar\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.unistellar.com\/fr\/blog\/les-ombres-de-titan\/\",\"url\":\"https:\/\/www.unistellar.com\/fr\/blog\/les-ombres-de-titan\/\",\"name\":\"Les ombres de Titan - 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