{"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\/sv\/rosetta_s_blind_date_with_asteroid_lutetia\/","title":{"rendered":"Rosettas blinddate med asteroiden Lutetia"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA:s kometutforskningssond Rosetta \u00e4r p\u00e5 v\u00e4g mot ett blinddate med asteroiden Lutetia. Precis som vid m\u00e5nga f\u00f6rsta dejter kommer Rosetta att tr\u00e4ffa Lutetia en l\u00f6rdagskv\u00e4ll. Ingen vet dock \u00e4nnu hur Lutetia ser ut p\u00e5 n\u00e4ra h\u00e5ll. Sannolikheten \u00e4r stor att Lutetias yta \u00e4r mycket gammal och pr\u00e4glad av kratrar, eftersom asteroider \u00e4r stenblock som blivit kvar fr\u00e5n planeternas bildande.<\/p>\n<\/div>\n<p>Man vet inte mycket om denna mystiska medlem av huvudasteroidb\u00e4ltet, som kretsar kring Solen mellan Mars och Jupiter. Lutetia \u00e4r dock utan tvekan den st\u00f6rsta asteroiden som hittills har bes\u00f6kts av en rymdfarkost. Inledningsvis trodde man att den hade en diameter p\u00e5 cirka 95 km, men att den endast var n\u00e5got elliptisk (\u00e4ggformad). En nyare uppskattning tyder p\u00e5 att den kan vara betydligt mer avl\u00e5ng och upp till 134 km bred. Kontinuerliga f\u00f6r\u00e4ndringar i dess ljusstyrka visar tydligt att Lutetia roterar och har en oj\u00e4mn yta.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"2589\" data-credit=\"ESA, image by AOES Medialab\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/11\/Deep-space_hibernation_before_comet_rendezvous2\" 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\/2002\/11\/deep-space_hibernation_before_comet_rendezvous2\/17864862-3-eng-GB\/Deep-space_hibernation_before_comet_rendezvous.jpg\" alt=\"Deep-space hibernation before comet rendezvous\"><figcaption>Djuprymdss\u00f6mn inf\u00f6r m\u00f6tet med kometen<\/figcaption><\/figure>\n<p>Ett annat mysterium g\u00e4ller vad asteroiden best\u00e5r av. De flesta m\u00e4tningar tyder p\u00e5 att den tillh\u00f6r \u2018C-typen\u2019, som inneh\u00e5ller kolf\u00f6reningar. Vissa studier tyder dock p\u00e5 att den kan tillh\u00f6ra \u2018M-typen\u2019, som \u00e4r rik p\u00e5 metaller.<\/p>\n<p>Svaren p\u00e5 alla dessa fr\u00e5gor kommer n\u00e4r Rosetta den 10 juli passerar inom 3 200 km fr\u00e5n rymdstenen. Kontrollteamet p\u00e5 jorden finjusterar noggrant rymdfarkostens bana s\u00e5 att den ska kunna skicka tillbaka cirka tv\u00e5 timmars detaljerade bilder. Rymdfarkosten kommer omedelbart att b\u00f6rja s\u00e4nda data tillbaka till jorden och de f\u00f6rsta bilderna kommer att offentligg\u00f6ras senare samma kv\u00e4ll. Rosetta kommer sedan att s\u00e4tta kurs mot \u00e4nnu ett f\u00f6rsta m\u00f6te \u2013 denna g\u00e5ng med kometen Churyumov-Gerasimenko \u2013 och det sp\u00e4nnande m\u00f6tet f\u00f6rv\u00e4ntas \u00e4ga rum 2014.<\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&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_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\/sv\/wp-json\/wp\/v2\/posts\/1013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=1013"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1013\/revisions"}],"predecessor-version":[{"id":4796,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1013\/revisions\/4796"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1013"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1013"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1013"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1013"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1013"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1013"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1013"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}