{"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\/de\/rosetta_s_blind_date_with_asteroid_lutetia\/","title":{"rendered":"Rosettas Blind Date mit dem Asteroiden Lutetia"},"content":{"rendered":"
\n

Der ESA-Kometenj\u00e4ger Rosetta ist auf dem Weg zu einem Blind Date mit dem Asteroiden Lutetia. Wie so viele erste Verabredungen findet auch das Date zwischen Rosetta und Lutetia an einem Samstagabend statt. Allerdings wei\u00df noch niemand, wie Lutetia aus der N\u00e4he aussieht. Es ist gut m\u00f6glich, dass Lutetias Gesicht sehr alt und von Kratern durchfurcht ist - denn schlie\u00dflich sind Asteroiden Gesteinsklumpen, die bei der Entstehung der Planeten als Reste \u00fcbrig geblieben sind.<\/p>\n<\/div>\n

Man wei\u00df nur wenig \u00fcber dieses r\u00e4tselhafte Mitglied des Planetoideng\u00fcrtels, das zwischen Mars und Jupiter um die Sonne kreist. Auf jeden Fall ist Lutetia der gr\u00f6\u00dfte Asteroid, dem je eine Raumsonde einen Besuch abgestattet hat. Zun\u00e4chst nahm man an, sie sei etwa 95 km im Durchmesser gro\u00df und nur leicht elliptisch (oval) geformt. Eine neuere Sch\u00e4tzung legt nahe, dass sie wesentlich eif\u00f6rmiger und bis zu 134 km breit ist. An den st\u00e4ndigen Helligkeitsschwankungen wird deutlich, dass sich Lutetia dreht und ihre Oberfl\u00e4che sehr rau ist.<\/p>\n

\"Deep-space
Deep-space hibernation before comet rendezvous<\/figcaption><\/figure>\n

Ein weiteres R\u00e4tsel umgibt Lutetias Zusammensetzung. Die meisten Messungen deuten auf einen C-Asteroiden hin, der aus Kohlenstoffverbindungen besteht. Anderen Untersuchungen zufolge k\u00f6nnte es sich jedoch auch um einen der metallreichen M-Typen handeln.<\/p>\n

The answers to all these questions will come when Rosetta sweeps to within 3,200 km of the space rock on 10 July. Ground controllers are carefully tweaking the spacecraft\u2019s path so that it will be able to send back around two hours of detailed images. The spacecraft will instantly begin beaming the data back to Earth and the first pictures will be released later that evening. Rosetta will then head for another first date \u2013 this time with comet Churyumov-Gerasimenko – with their exciting encounter expected in 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\/de\/wp-json\/wp\/v2\/posts\/1013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/comments?post=1013"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/posts\/1013\/revisions"}],"predecessor-version":[{"id":4796,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/posts\/1013\/revisions\/4796"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/media?parent=1013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/categories?post=1013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/tags?post=1013"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/panel?post=1013"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/language?post=1013"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/age?post=1013"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/duration?post=1013"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/resource_type?post=1013"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/audience?post=1013"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/de\/wp-json\/wp\/v2\/wf_post_folders?post=1013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}