{"id":1013,"date":"2010-06-17T09:31:00","date_gmt":"2010-06-17T07:31:00","guid":{"rendered":"https:\/\/kids.esa.int\/rosetta_s_blind_date_with_asteroid_lutetia\/"},"modified":"2026-10-08T00:34:52","modified_gmt":"2026-10-07T22:34:52","slug":"rosetta_s_blind_date_with_asteroid_lutetia","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/rosetta_s_blind_date_with_asteroid_lutetia\/","title":{"rendered":"Rosettas blinddate med asteroiden Lutetia"},"content":{"rendered":"
\n

ESAs kometjeger Rosetta er p\u00e5 vei mot et blinddate med asteroiden Lutetia. Som ved mange f\u00f8rste dater vil Rosetta m\u00f8te Lutetia en l\u00f8rdagskveld. Imidlertid vet ingen enn\u00e5 hvordan Lutetia ser ut p\u00e5 n\u00e6rt hold. Sannsynligvis vil Lutetias overflate v\u00e6re sv\u00e6rt gammel og preget av kratere, siden asteroider er steinblokker som er igjen etter planetdannelsen.<\/p>\n<\/div>\n

Det er lite kjent om dette mystiske medlemmet av hovedasteroidbeltet, som g\u00e5r i bane rundt Solen mellom Mars og Jupiter. Lutetia er imidlertid uten tvil den st\u00f8rste asteroiden som hittil er blitt bes\u00f8kt av et romfart\u00f8y. I begynnelsen antok man at den hadde en diameter p\u00e5 rundt 95 km, men at den bare var svakt elliptisk (eggformet). Nyere beregninger tyder p\u00e5 at den kan v\u00e6re mye mer langstrakt og opptil 134 km bred. Kontinuerlige endringer i lysstyrken gj\u00f8r det klart at Lutetia roterer og har en ujevn overflate.<\/p>\n

\"Deep-space
Dyprom-dvalemodus f\u00f8r m\u00f8tet med kometen<\/figcaption><\/figure>\n

Et annet mysterium dreier seg om hva asteroiden best\u00e5r av. De fleste m\u00e5linger tyder p\u00e5 at den er av \u2018C-typen\u2019, som inneholder karbonforbindelser. Noen studier tyder imidlertid p\u00e5 at den kan v\u00e6re av \u2018M-typen\u2019, som er rik p\u00e5 metaller.<\/p>\n

Svarene p\u00e5 alle disse sp\u00f8rsm\u00e5lene vil komme n\u00e5r Rosetta den 10. juli passerer s\u00e5 n\u00e6r som 3 200 km fra romsteinen. Kontroll\u00f8rene p\u00e5 bakken justerer n\u00f8ye romfart\u00f8yets bane, slik at det skal kunne sende tilbake rundt to timer med detaljerte bilder. Romfart\u00f8yet vil umiddelbart begynne \u00e5 overf\u00f8re dataene til Jorden, og de f\u00f8rste bildene vil bli offentliggjort senere samme kveld. Deretter setter Rosetta kursen mot et nytt f\u00f8rste m\u00f8te \u2013 denne gangen med kometen Churyumov-Gerasimenko \u2013 og det spennende m\u00f8tet er forventet \u00e5 finne sted i 2014.<\/p>","protected":false},"excerpt":{"rendered":"

ESA\u2019s Rosetta comet-chaser is heading for a blind date with asteroid Lutetia. Like many first dates, Rosetta will meet Lutetia on a Saturday night. However, no one yet knows what […]<\/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_steins3\/17896349-2-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_Steins3","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1013","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=1013"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1013\/revisions"}],"predecessor-version":[{"id":4796,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1013\/revisions\/4796"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=1013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=1013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=1013"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=1013"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=1013"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=1013"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=1013"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=1013"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=1013"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=1013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}