{"id":822,"date":"2004-12-02T15:38:00","date_gmt":"2004-12-02T14:38:00","guid":{"rendered":"https:\/\/kids.esa.int\/different_orbits\/"},"modified":"2026-10-08T00:32:40","modified_gmt":"2026-10-07T22:32:40","slug":"different_orbits","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/different_orbits\/","title":{"rendered":"Forskellige baner"},"content":{"rendered":"
\n

En bane er den vej, et objekt f\u00f8lger omkring et bestemt punkt i rummet, for eksempel den bane, M\u00e5nen f\u00f8lger omkring Jorden. Baner bestemmes af tyngdekraften og er ofte \u2018elliptiske\u2019, alts\u00e5 ovale.<\/p>\n<\/div>\n

Hver satellit placeres i den bane, der er bedst egnet til at udf\u00f8re dens mission. Jordobservationssatellitter placeres for eksempel normalt i lave (400\u20131.200 km) cirkul\u00e6re baner. Det giver dem mulighed for at kredse om Jorden en gang hvert par timer og dermed indhente detaljerede billeder af planetens overflade.<\/p>\n

Den bedste bane for disse satellitter er en \u201cpol\u00e6r\u201d bane, der f\u00f8rer dem over Nord- og Sydpolen. Mens Jorden drejer under dem, kan satellitterne se direkte ned og kortl\u00e6gge hele planeten \u2013 stribe for stribe \u2013 over en periode p\u00e5 et par dage.<\/p>\n

Vejr- og kommunikationssatellitter \u201csv\u00e6ver\u201d ofte over den samme del af Jorden 24 timer i d\u00f8gnet. Dette er muligt, fordi de er placeret i cirkul\u00e6re baner ca. 36.000 km over \u00e6kvator. I denne h\u00f8jde holder de trit med Jordens rotation, s\u00e5 de altid ser ned p\u00e5 de samme steder. Dette kaldes en \u201cgeostation\u00e6r bane\u201d. Nogle satellitter \u2013 herunder Den Internationale Rumstation \u2013 f\u00f8lger lave baner, der er skr\u00e5tstillede (h\u00e6ldende) i forhold til \u00e6kvator.<\/p>\n

En r\u00e6kke videnskabelige satellitter, s\u00e5som ESA\u2019s Cluster og XMM-Newton, f\u00f8lger meget elliptiske (\u00e6gformede) baner, der f\u00f8rer dem t\u00e6t p\u00e5 Jorden og derefter langt v\u00e6k igen.<\/p>","protected":false},"excerpt":{"rendered":"

An orbit is the path of an object around a particular point in space, for example the path the Moon takes around the Earth. Orbits are determined by gravity, and […]<\/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\/2001\/05\/some_popular_orbits3\/17864898-3-eng-GB\/Some_popular_orbits.jpg","esa_banner_description":"Some popular orbits","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/05\/Some_popular_orbits3","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":[10,65,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-822","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=822"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/822\/revisions"}],"predecessor-version":[{"id":1965,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/822\/revisions\/1965"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=822"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=822"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=822"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=822"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=822"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=822"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=822"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}