{"id":517,"date":"2024-08-05T17:43:48","date_gmt":"2024-08-05T15:43:48","guid":{"rendered":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/?page_id=517"},"modified":"2025-04-08T17:43:32","modified_gmt":"2025-04-08T15:43:32","slug":"birdy-2","status":"publish","type":"page","link":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/birdy-2\/","title":{"rendered":"Birdy"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#2a292b\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"1921\" height=\"351\" class=\"wp-block-cover__image-background wp-image-338\" alt=\"\" src=\"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/08\/banniere-dart.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/08\/banniere-dart.jpg 1921w, https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/08\/banniere-dart-300x55.jpg 300w, https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/08\/banniere-dart-1024x187.jpg 1024w, https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/08\/banniere-dart-768x140.jpg 768w, https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/08\/banniere-dart-1536x281.jpg 1536w\" sizes=\"auto, (max-width: 1921px) 100vw, 1921px\" \/><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns 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:100%\">\n<h1 class=\"wp-block-heading has-neve-link-hover-color-color has-text-color has-link-color wp-elements-eb313fd308a0ce15cc8aba17ba249564\">BIRDY<\/h1>\n<\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover is-light has-border-color has-neve-link-hover-color-border-color\" style=\"border-style:dashed;padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--80);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--80)\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-link-hover-color-background-color has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-1df9bf10 wp-block-cover-is-layout-constrained\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading has-nv-c-1-color has-text-color has-link-color wp-elements-95d37e082c6f8e79c8b28438b01914ee\">En bref<\/h2>\n\n\n\n<div class=\"wp-block-columns 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\">\n<p>Birdy est un concept de nanosatellite interplan\u00e9taire visant \u00e0 explorer la structure interne des petits corps du syst\u00e8me solaire par l&rsquo;utilisation des liens inter-satellites.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Taille : 3-6 U<\/li>\n\n\n\n<li>Orbite : interplan\u00e9taire<\/li>\n\n\n\n<li>Charge utile :&nbsp;<\/li>\n\n\n\n<li>Statut : en cours<\/li>\n\n\n\n<li>Financement :&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>Contact : Daniel Hestroffer (IMCCE)<\/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=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/files\/2024\/11\/logo-birdy-carre.jpg\" alt=\"\" style=\"width:188px;height:auto\" \/><\/figure><\/div><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:120px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-nv-c-1-color has-text-color has-link-color wp-elements-2fb6be7f326acf5570ffc47ef62effd3\">Description<\/h2>\n\n\n\n<p>L\u2019\u00e9tude des petits corps du syst\u00e8me solaire (ast\u00e9ro\u00efdes, com\u00e8tes, satellites) est fondamentale aussi bien pour notre compr\u00e9hension de la formation du syst\u00e8me solaire que pour la caract\u00e9risation d&rsquo;un risque \u00e9ventuel de g\u00e9ocroiseur qui impacterait la Terre. La connaissance de la structure interne des petits corps (de quelques centaines de m\u00e8tres \u00e0 quelques kilom\u00e8tres de large) est, de ce point de vue, un \u00e9l\u00e9ment cl\u00e9.<\/p>\n\n\n\n<p>Les nanosatellites offrent une opportunit\u00e9 nouvelle pour d\u00e9terminer les masses (densit\u00e9, porosit\u00e9, distribution des masses,\u2026) de ces petits corps en utilisant des mesures relatives prises \u00e0 proximit\u00e9. En particulier, la science en fr\u00e9quence radio et les techniques de d\u00e9termination d\u2019orbites sont prometteuses si on exploite les possibilit\u00e9s offertes par les liens (ISL radio et optique) entre plusieurs satellites. De nouveaux concepts sont aussi d\u00e9velopp\u00e9s pour r\u00e9duire les co\u00fbts d\u2019op\u00e9ration et la complexit\u00e9 de ce type de missions gr\u00e2ce \u00e0 la d\u00e9termination des orbites \u00e0 bord (in-flight orbits determination, IFOD).<\/p>\n\n\n\n<p>Le but de Birdy est d\u2019\u00eatre le satellite-fille des missions plan\u00e9taires futures ou d\u2019agir comme une mission de reconnaissance vers un ast\u00e9ro\u00efde potentiellement dangereux, par exemple dans le cadre des missions de l\u2019ESA AIDA\/Hera ou Comet Interceptor.\u00a0<\/p>\n\n\n\n<p>Une d\u00e9monstration en orbite est pr\u00e9vue en 2026 et la mission scientifique vise le passage de l\u2019ast\u00e9ro\u00efde Apophis pr\u00e8s de la Terre en 2029.<\/p>\n\n\n\n<div style=\"height:120px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-nv-c-1-color has-text-color has-link-color wp-elements-4551a9d590f82462be3ff154b991bb7a\">Partenaires<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMCCE<\/li>\n\n\n\n<li>Laboratoire d&rsquo;instrumentation et de recherche en astrophysique (Lira, Observatoire de Paris, universit\u00e9 Paris Sciences Lettres)<\/li>\n\n\n\n<li>P\u00f4le d&rsquo;expertise Census<\/li>\n<\/ul>\n\n\n\n<div style=\"height:120px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Description L\u2019\u00e9tude des petits corps du syst\u00e8me solaire (ast\u00e9ro\u00efdes, com\u00e8tes, satellites) est fondamentale aussi bien pour notre compr\u00e9hension de la formation du syst\u00e8me solaire que pour la caract\u00e9risation d&rsquo;un risque&hellip;&nbsp;<a href=\"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/birdy-2\/\" rel=\"bookmark\">Lire la suite &raquo;<span class=\"screen-reader-text\">Birdy<\/span><\/a><\/p>\n","protected":false},"author":97,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"on","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"on","footnotes":""},"class_list":["post-517","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/pages\/517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/users\/97"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/comments?post=517"}],"version-history":[{"count":9,"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/pages\/517\/revisions"}],"predecessor-version":[{"id":1097,"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/pages\/517\/revisions\/1097"}],"wp:attachment":[{"href":"https:\/\/sites.lesia.obspm.fr\/federation-nanosats\/wp-json\/wp\/v2\/media?parent=517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}