{"id":2753,"date":"2026-05-28T19:23:08","date_gmt":"2026-05-28T17:23:08","guid":{"rendered":"http:\/\/localhost\/messier\/m39"},"modified":"2026-06-04T15:27:21","modified_gmt":"2026-06-04T13:27:21","slug":"m39-2","status":"publish","type":"messier_object","link":"https:\/\/voyage-astrophoto.fr\/index.php\/messier\/m39-2\/","title":{"rendered":"M39 &#8211; Amas Ouvert M39"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">M39 fut probablement observ\u00e9 par Guillaume Le Gentil en 1750 et catalogu\u00e9 par Charles Messier le 24 octobre 1764. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cet amas ouvert est l&rsquo;un des plus proches du catalogue Messier, situ\u00e9 \u00e0 seulement 825 ann\u00e9es-lumi\u00e8re de la Terre. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il contient seulement une trentaine d&rsquo;\u00e9toiles mais couvre une vaste r\u00e9gion du ciel d&rsquo;environ 7 ann\u00e9es-lumi\u00e8re de diam\u00e8tre, lui donnant une faible densit\u00e9 stellaire. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les \u00e9toiles les plus brillantes forment un triangle allong\u00e9, clairement visible m\u00eame dans des instruments modestes. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M39 est un amas relativement jeune, estim\u00e9 \u00e0 environ 270 millions d&rsquo;ann\u00e9es. Il est situ\u00e9 dans la constellation du Cygne, pr\u00e8s de la t\u00eate de l&rsquo;oiseau, et peut \u00eatre observ\u00e9 \u00e0 l&rsquo;\u0153il nu dans des conditions favorables, apparaissant comme une tache floue distincte. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Sources: SEDS Messier Database, Wikipedia, NASA.<\/em><\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2753","messier_object","type-messier_object","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/messier_object\/2753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/messier_object"}],"about":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/types\/messier_object"}],"wp:attachment":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/media?parent=2753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}