{"id":3520,"date":"2015-09-04T05:01:59","date_gmt":"2015-09-04T05:01:59","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3520"},"modified":"2015-09-07T04:53:02","modified_gmt":"2015-09-07T04:53:02","slug":"la-lune-occulte-aldebaran-a-laube-du-5-septembre","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/04\/la-lune-occulte-aldebaran-a-laube-du-5-septembre\/","title":{"rendered":"La Lune occulte Ald\u00e9baran \u00e0 l’aube du 5 septembre"},"content":{"rendered":"

Ce weekend 4 \u00e9toiles de la constellation du Taureau seront occult\u00e9es par le Dernier Quartier de Lune, dont la brillante Ald\u00e9baran.<\/strong><\/p>\n

Une semaine apr\u00e8s la premi\u00e8re Super Lune<\/a> de l’ann\u00e9e, nous avons de nouveau rendez-vous avec notre satellite naturel. Samedi 5 septembre avant l’aube, le Dernier Quartier<\/a> de S\u00e9l\u00e9n\u00e9 va lentement glisser devant quelques-unes des \u00e9toiles de la constellation du Taureau<\/a>.<\/p>\n

\"aldebaran\"<\/a><\/p>\n

R\u00e9apparition de l’\u00e9toile Ald\u00e9baran apr\u00e8s son occultation par la Lune \u00e0 l’aube du 5 septembre.<\/strong><\/p>\n

Le spectacle commencera peu avant 3 h du matin par 3 occultations d’\u00e9toiles peu lumineuses qui n\u00e9cessiteront l’emploi d’une petite lunette astronomique<\/a>\u00a0: \u00e0 2 h 53 (temps local) la Lune cachera l’\u00e9toile 75 Tau<\/strong> (magnitude 5), puis \u00e0 2 h 59 ce sera le tour de l’\u00e9toile 77 Tau<\/strong> (magnitude 3,8) et enfin \u00e0 3 h 47 celui de l’\u00e9toile HD 28527<\/strong> (magnitude 4,8).<\/p>\n

77 Tau<\/strong> r\u00e9appara\u00eetra \u00e0 3 h 23, 75 Tau<\/strong> \u00e0 3 h 46 et HD 28527<\/strong> \u00e0 4 h 47.\u00a0Deux heures plus tard la Lune nous cachera Ald\u00e9baran.<\/p>\n

Ald\u00e9baran<\/a> (Alpha Tauri<\/em>) est une g\u00e9ante rouge qui se trouve \u00e0 65 ann\u00e9es-lumi\u00e8re de nous. C’est la plus brillante \u00e9toile de la constellation du Taureau et la 13e la plus lumineuse du ciel nocturne, la premi\u00e8re \u00e9tant Sirius<\/a>.<\/p>\n

Il faudra patienter jusqu’\u00e0 6 h 49 pour voir Ald\u00e9baran<\/a> (magnitude 0,9) dispara\u00eetre \u00e0 son tour derri\u00e8re la Lune, sa r\u00e9apparition intervenant peu apr\u00e8s 8 h du matin : une paire de jumelles sera alors la bienvenue pour retrouver Alpha Tauri\u00a0<\/em>dans un ciel d\u00e9j\u00e0 bien clair (image ci-dessus).<\/p>\n

Signalons enfin que pour chacune de ces occultations la disparition des \u00e9toiles se produit sur le bord \u00e9clair\u00e9 de la Lune et leur r\u00e9apparition contre le bord obscur.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ce weekend 4 \u00e9toiles de la constellation du Taureau seront occult\u00e9es par le Dernier Quartier de Lune, dont la brillante Ald\u00e9baran. Une semaine apr\u00e8s la premi\u00e8re Super Lune de l’ann\u00e9e, nous avons de nouveau rendez-vous avec notre satellite naturel. Samedi 5 septembre avant l’aube, le Dernier Quartier de S\u00e9l\u00e9n\u00e9 va lentement glisser devant quelques-unes des … Continuer la lecture de La Lune occulte Ald\u00e9baran \u00e0 l’aube du 5 septembre<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":3521,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[373,1226,132,139,106],"class_list":["post-3520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-aldebaran","tag-alpha-tauri","tag-constellation-du-taureau","tag-dernier-quartier","tag-occultation"],"yoast_head":"\nLa Lune occulte Ald\u00e9baran \u00e0 l'aube du 5 septembre<\/title>\n<meta name=\"description\" content=\"Ce weekend 4 \u00e9toiles de la constellation du Taureau seront occult\u00e9es par le Dernier Quartier de Lune, dont la brillante 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