{"id":614,"date":"2012-10-17T11:12:00","date_gmt":"2012-10-17T09:12:00","guid":{"rendered":"https:\/\/kids.esa.int\/four_galileo_pathfinders_now_in_orbit\/"},"modified":"2026-10-08T00:30:18","modified_gmt":"2026-10-07T22:30:18","slug":"four_galileo_pathfinders_now_in_orbit","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/four_galileo_pathfinders_now_in_orbit\/","title":{"rendered":"Mise en orbite des quatre satellites Galileo"},"content":{"rendered":"
\n

Le 12 octobre 2012, un lanceur Soyouz a d\u00e9coll\u00e9 du port spatial de l\u2019Europe \u00e0 Kourou, en Guyane fran\u00e7aise, avec deux satellites Galileo. Les troisi\u00e8me et quatri\u00e8me satellites europ\u00e9ens du syst\u00e8me mondial de navigation par satellite Galileo vont rejoindre en orbite leurs deux pr\u00e9d\u00e9cesseurs lanc\u00e9s il y a un an. Ces deux nouveaux satellites vont contribuer \u00e0 la phase de test du programme Galileo.<\/p>\n<\/div>\n

Le lancement spectaculaire de Soyouz VS03 a eu lieu \u00e0 20h15 (heure de Paris). Tous les \u00e9tages de Soyouz ont fonctionn\u00e9 conform\u00e9ment aux pr\u00e9visions. L\u2019\u00e9tage sup\u00e9rieur a plac\u00e9 les satellites Galileo sur une orbite d\u2019environ 23 200 km d\u2019altitude, 3 heures et 45 minutes apr\u00e8s le d\u00e9collage.<\/p>\n

Les deux satellites Galileo ont \u00e9t\u00e9 transport\u00e9s c\u00f4te \u00e0 c\u00f4te avant d\u2019\u00eatre lanc\u00e9s dans des directions oppos\u00e9es aux coordonn\u00e9es appropri\u00e9es d\u2019insertion orbitale. Apr\u00e8s les v\u00e9rifications initiales, les satellites seront confi\u00e9s \u00e0 des centres de contr\u00f4le en Allemagne et en Italie pour \u00eatre test\u00e9s avant leur mise en service effective.<\/p>\n

\"Four
Quatre satellites Galileo<\/figcaption><\/figure>\n

Avec quatre satellites identiques aujourd\u2019hui en orbite, l\u2019ESA va pouvoir d\u00e9montrer toutes les performances du syst\u00e8me Galileo avant le d\u00e9ploiement des satellites restants. L\u2019association de ces quatre satellites va permettre de localiser avec pr\u00e9cision des coordonn\u00e9es terrestres.<\/p>\n

Ces quatre premiers satellites marquent le d\u00e9but du d\u00e9ploiement de l\u2019ensemble de la constellation Galileo. Un total de 18 autres satellites sera normalement lanc\u00e9 d\u2019ici fin 2014. Toute l\u2019Europe devrait alors pouvoir b\u00e9n\u00e9ficier des services Galileo de navigation par satellite. La constellation Galileo comportera un total de 30 satellites plac\u00e9s sur trois orbites diff\u00e9rentes.<\/p>","protected":false},"excerpt":{"rendered":"

On 12 October, a Soyuz rocket lifted off from the Kourou spaceport in French Guiana with two Galileo spacecraft. The third and fourth satellites of Europe\u2019s global navigation satellite system […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2012\/10\/soyuz_vs03_liftoff18\/18246550-2-eng-GB\/Soyuz_VS03_liftoff.jpg","esa_banner_description":"Soyuz VS03 liftoff","esa_banner_credit":"ESA\u2013S. Corvaja, 2012","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/10\/Soyuz_VS03_liftoff18","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,54,40],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-614","post","type-post","status-publish","format-standard","hentry","category-learn","category-space-technologies-on-earth","category-technology"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=614"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/614\/revisions"}],"predecessor-version":[{"id":4583,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/614\/revisions\/4583"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=614"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=614"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=614"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=614"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=614"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=614"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=614"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}