{"id":1138,"date":"2004-11-16T10:43:00","date_gmt":"2004-11-16T09:43:00","guid":{"rendered":"https:\/\/kids.esa.int\/asteroid_families\/"},"modified":"2026-10-08T00:36:26","modified_gmt":"2026-10-07T22:36:26","slug":"asteroid_families","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/asteroid_families\/","title":{"rendered":"Familiile de asteroizi"},"content":{"rendered":"
\n

Se \u0219tie acum c\u0103 Ceres are o l\u0103\u021bime de aproximativ 940 km \u2013 aproximativ un sfert (o p\u0103trime) din dimensiunea Lunii P\u0103m\u00e2ntului. Cu toate acestea, el reprezint\u0103 mai mult de un sfert din masa total\u0103 a tuturor asteroizilor.<\/p>\n<\/div>\n

Al\u021bi \u0219aisprezece asteroizi au un diametru de peste 240 km. Cu toate acestea, majoritatea asteroizilor sunt roci \u0219i bolovani cu un diametru de doar c\u00e2\u021biva metri. Dac\u0103 ar fi comprima\u021bi to\u021bi \u00eentr-un singur obiect, ar fi totu\u0219i mai mici dec\u00e2t Luna. Unii asteroizi sunt pietro\u0219i, al\u021bii sunt compu\u0219i din metale, precum fierul \u0219i nichelul. Majoritatea au o culoare negru-maronie \u0219i sunt boga\u021bi \u00een carbon.<\/p>\n

Mul\u021bi asteroizi fac parte din familii. Fiecare familie are aceea\u0219i culoare \u0219i pare s\u0103 fie alc\u0103tuit\u0103 din acelea\u0219i materiale. De asemenea, ace\u0219tia se deplaseaz\u0103 unul l\u00e2ng\u0103 altul \u00een diferite p\u0103r\u021bi ale centurii principale. Una dintre cele mai mari dintre acestea este familia Flora, care num\u0103r\u0103 aproximativ 400 de membri cunoscu\u021bi.<\/p>\n

Asteroizii se g\u0103sesc \u0219i \u00een afara centurii principale. Ace\u0219tia au fost arunca\u021bi din sistemul lor de origine de gravita\u021bia puternic\u0103 a lui Jupiter sau \u00een urma coliziunilor cu al\u021bi asteroizi. Unii au devenit luni ale acestei planete gigantice. Sute de mii de asteroizi \u2013 unii dintre ei de dimensiuni mari \u2013 trec pe l\u00e2ng\u0103 P\u0103m\u00e2nt.<\/p>","protected":false},"excerpt":{"rendered":"

Ceres is now known to have a width of about 940 km – about one quarter (one fourth) the size of Earth’s Moon. But it accounts for more than one […]<\/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\/2002\/04\/typical_orbits_for_inner_solar_system_asteroids2\/17865268-3-eng-GB\/Typical_orbits_for_inner_solar_system_asteroids.jpg","esa_banner_description":"Typical orbits for inner solar system asteroids","esa_banner_credit":"ESA 2002. Illustration by Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/04\/Typical_orbits_for_inner_solar_system_asteroids2","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1138","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/comments?post=1138"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1138\/revisions"}],"predecessor-version":[{"id":2281,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/1138\/revisions\/2281"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=1138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=1138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=1138"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=1138"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=1138"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=1138"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=1138"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=1138"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=1138"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=1138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}