{"id":981,"date":"2008-09-04T07:56:00","date_gmt":"2008-09-04T05:56:00","guid":{"rendered":"https:\/\/kids.esa.int\/rosetta_zooms_past_a_rare_asteroid\/"},"modified":"2026-10-08T00:34:29","modified_gmt":"2026-10-07T22:34:29","slug":"rosetta_zooms_past_a_rare_asteroid","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/rosetta_zooms_past_a_rare_asteroid\/","title":{"rendered":"Rosetta suser forbi en sj\u00e6lden asteroide"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA\u2019s rumfart\u00f8j Rosetta er p\u00e5 vej mod et m\u00f8de med en komet i 2014. Under sin 10-\u00e5rige rejse gennem det ydre rum vil Rosetta to gange bes\u00f8ge det prim\u00e6re asteroideb\u00e6lte mellem Mars og Jupiter. Dens f\u00f8rste historiske m\u00f8de med en asteroide finder sted kl. 20:58 CEST (centraleurop\u00e6isk sommertid) den 5. september.<\/p>\n<\/div>\n<p>Siden opsendelsen i marts 2004 har Rosetta tilbagelagt omkring 3.700 millioner km. Den befinder sig i \u00f8jeblikket mere end dobbelt s\u00e5 langt fra Solen som Jorden. Rumfart\u00f8jet har allerede passeret Jorden (to gange) og Mars, men dets forbiflyvning af den lille, stenede asteroide ved navn Steins giver den f\u00f8rste reelle mulighed for at anvende dets videnskabelige instrumenter.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1323\" data-credit=\"ESA, image by C.Carreau\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/09\/Artist_s_impression_of_asteroid_2867_Steins2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2008\/09\/artist_s_impression_of_asteroid_2867_steins2\/17884620-2-eng-GB\/Artist_s_impression_of_asteroid_2867_Steins.jpg\" alt=\"Artist\u2019s impression of asteroid (2867) Steins\"><figcaption>Kunstnerisk fremstilling af asteroiden (2867) Steins<\/figcaption><\/figure>\n<p>Rosetta vil suse forbi Steins med en hastighed p\u00e5 omkring 31.000 km i timen. Siden begyndelsen af august er billeder taget af rumfart\u00f8jets kameraer blevet brugt til at spore Steins og fastsl\u00e5 dets position. Dette vil g\u00f8re det muligt for rumfart\u00f8jet at passere kun 800 km fra sit m\u00e5l. Desv\u00e6rre m\u00e5 kontrolpersonalet ved ESA\u2019s European Space Operations Centre i Darmstadt, Tyskland, vente til kl. 22.23 CEST p\u00e5 den f\u00f8rste kontakt med Rosetta og bekr\u00e6ftelsen p\u00e5, at forbiflyvningen er lykkedes.<\/p>\n<p>Steins blev opdaget i 1969 og har en diameter p\u00e5 kun f\u00e5 kilometer. Regelm\u00e6ssige \u00e6ndringer i dens lysstyrke viser, at den roterer omtrent en gang hver 6. time. Forskerne er meget interesserede i at l\u00e6re mere om denne lille verden, fordi den er en relativt sj\u00e6lden type asteroide. Objekter som Steins er rester fra planeternes tilblivelse for 4,5 milliarder \u00e5r siden. Ved at studere dem kan vi l\u00e6re mere om dannelsen af Jorden og de andre planeter i solsystemet.<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA\u2019s Rosetta spacecraft is on its way to a rendezvous with a comet in 2014. During its 10-year trek through deep space, Rosetta will make two visits to the main [&hellip;]<\/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\/2008\/09\/artist_s_impression_of_rosetta_as_it_flies_by_asteroid_steins4\/17900421-2-eng-GB\/Artist_s_impression_of_Rosetta_as_it_flies_by_asteroid_Steins.jpg","esa_banner_description":"Artist\u2019s impression of Rosetta as it flies by asteroid Steins","esa_banner_credit":"ESA, image by C.Carreau","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/09\/Artist_s_impression_of_Rosetta_as_it_flies_by_asteroid_Steins4","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":[46,10,11],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-981","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/981","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=981"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/981\/revisions"}],"predecessor-version":[{"id":4773,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/981\/revisions\/4773"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=981"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=981"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=981"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=981"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=981"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=981"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=981"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}