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UmbriyelUmbriel UmbriyelDani pro vidkrittyaData vidkrittya 24 zhovtnya 1851Vidkrivach i Vilyam LasselPlaneta UranNomer IIOrbitalni harakteristikiVelika pivvis kmOrbitalnij period 4 1 dibEkscentrisitet orbitiFizichni harakteristikiVidima zoryana velichina 15 1Atmosfera vidsutnyaInshi poznachennyaUmbriyel u VikishovishiUmbriyel 1 abo Umbrie l 2 3 4 suputnik planeti Uran Vidkrito Vilyamom Lassellom 1851 roku 3 odnochasno z Arielem Nazvanij na chest gnoma personazha poemi A Poupa Vikradennya lokona en Umbriyel ye tretim za rozmirami j najtemnishim sered velikih suputnikiv Urana vin vidbivaye vsogo 16 svitla sho na nogo padaye Poverhnya silno kraterovana ale na nomu nemaye krateriv zi svitlimi promenyami yaki nayavni na inshih suputnikah Urana hocha ye dekilka velikih krateriv zi svitlim dnom Odne iz zaproponovanih poyasnen polyagaye v tomu sho vidilennya tepla v nadrah Umbriyelya chomus bulo nedostatnim shob viklikati plavlennya kori j gravitacijnu diferenciaciyu Tomu sumish lodu j temnih kam yanih porid zalishilasya na poverhni v pervisnomu viglyadi a vikidi rechovini navkolo meteoritnih krateriv ne vidriznyayutsya vid osnovnoyi poverhni 3 Osoblivist Umbriyelya nezvichajnij svitlij krug blizko 140 km u diametri Jogo priroda nevidoma hocha ce mozhut buti vidkladennya pamorozi pov yazani z udarnim kraterom dzherelo Zmist 1 Vidkrittya ta nazva 2 Orbita 3 Sklad i vnutrishnya budova 4 Poverhnya 5 Pohodzhennya ta evolyuciya 6 Doslidzhennya 7 Div takozh 8 Primitki 9 PosilannyaVidkrittya ta nazva RedaguvatiUmbriyel viyavleno Vilyamom Lassellom 24 zhovtnya 1851 roku razom z inshim suputnikom Urana Arielem 5 6 Hocha Vilyam Gershel pershovidkrivach Titaniyi ta Oberona zayaviv naprikinci 18 stolittya pro te sho sposterigav she chotiri suputnika Urana 7 jogo sposterezhennya ne buli pidtverdzheni i Gershelya vvazhatisya vidkrivachem inshih suputnikiv Urana zaperechuyetsya 8 Usi suputniki Urana nazvano na chest personazhiv iz tvoriv Vilyama Shekspira i Aleksandra Poupa Nazvi vsih chotiroh suputnikiv Urana vidomih na toj chas buli zaproponovani sinom Vilyama Gershelya Dzhonom 1852 roku na prohannya Vilyama Lassela 9 Umbriyel nazvano im yam melanholichnogo gnoma z tvoru Aleksandra Poupa Vikradennya lokona en 10 Latinske slovo umbra oznachaye tin Suputnik takozh poznachayetsya yak Uran II 6 Orbita RedaguvatiOrbita Umbriyelya prolyagaye na vidstani 266 000 km vid Urana Ce tretij za viddalenistyu iz p yati velikih suputnikiv Urana Nahil orbiti do ekvatora planeti duzhe malenkij 11 Orbitalnij period Umbriyelya dorivnyuye 4 1 zemnih dib i zbigayetsya z periodom jogo obertannya Inakshe kazhuchi Umbriyel sinhronnij suputnik Urana j zavzhdi obernenij do nogo odnim bokom 12 Orbita Umbriyelya povnistyu lezhit vseredini magnitosferi Urana 13 a atmosferi v nogo nemaye Tomu jogo zadnya po hodu orbitalnogo ruhu pivkulya postijno bombarduyetsya chastinkami magnitosfernoyi plazmi yaki ruhayutsya po orbiti nabagato shvidshe Umbriyelya z periodom yakij dorivnyuye periodu osovogo obertannya Urana 14 Mozhlivo ce j prizvodit do potemninnya zadnoyi pivkuli yake sposterigayetsya na vsih suputnikah Urana krim Oberona 13 Prolit avtomatichnoyi mizhplanetnoyi stanciyi Voyadzher 2 dozvoliv viyaviti poblizu Umbriyelya pomitne zmenshennya koncentraciyi ioniv magnitosferi Urana 15 Oskilki Uran obertayetsya navkolo Soncya na boci a ploshina jogo ekvatora priblizno zbigayetsya z ploshinoyu orbit jogo velikih suputnikiv zmina pir roku na nih duzhe svoyeridna Kozhen polyus Umbriyelya 42 roki perebuvaye u povnij pitmi i 42 roki neperervno osvitlenij prichomu pid chas litnogo soncestoyannya Sonce na polyusi majzhe dosyagaye zenitu 13 Prolit Voyadzhera 2 v sichni 1986 roku zbigsya z litnim soncestoyannyam nad pivdennim polyusom todi yak majzhe vsya pivnichna pivkulya perebuvala u pitmi Raz na 42 roki pid chas rivnodennya na Urani Sonce i razom z nim Zemlya prohodit cherez jogo ekvatorialnu ploshinu i todi mozhna sposterigati vzayemni zatemnennya jogo suputnikiv Dekilka takih podij sposterigalosya u 2007 2008 rokah zokrema dva pokrittya Titaniyi Umbriyelem 15 serpnya i 8 grudnya 2007 roku i pokrittya Arielya Umbriyelem 19 serpnya 2007 roku 16 17 Narazi v Umbriyelya nemaye orbitalnogo rezonansu z zhodnim iz suputnikiv Urana Odnak mozhlivo na pochatku jogo isnuvannya isnuvav rezonans 1 3 iz Mirandoyu Mozhlivo ce zbilshilo ekscentrisitet orbiti Mirandi i spriyalo vnutrishnomu nagrivannyu ta geologichnij aktivnosti cogo suputnika u toj chas yak na orbitu Umbriyelya ce praktichno ne vplinulo 18 Suputnikam Urana legshe vijti z orbitalnogo rezonansu nizh suputnikam Saturna chi Yupitera oskilki splyushenist i rozmir Urana menshi nizh u bilshih planet gigantiv Prikladom ye Miranda yaka vijshla z rezonansu z chim imovirno i pov yazanij anomalno velikij nahil yiyi orbiti 19 20 Sklad i vnutrishnya budova RedaguvatiUmbriyel tretij za rozmirom i chetvertij za masoyu suputnik Urana Jogo gustina 1 39 g sm3 21 Z cogo viplivaye sho suputnik znachnoyu miroyu skladayetsya z vodyanogo lodu a shilnishi komponenti skladayut blizko 40 jogo masi 22 Ci komponenti mozhut buti kam yanistimi a takozh visokomolekulyarnimi organichnimi spolukami vidomimi yak tolini 12 Za dopomogoyu infrachervonoyi spektroskopiyi na poverhni viyavleno vodyanij lid 13 Jogo absorbcijni smugi na perednij pivkuli virazheni silnishe nizh na zadnij Prichini takoyi asimetriyi nevidomi ale vvazhayetsya sho ce mozhe buti viklikano bombarduvannyam poverhni zaryadzhenimi chastinkami z magnitosferi Urana yake diye same na zadnyu pivkulyu vnaslidok spilnogo obertannya planeti j plazmi 13 Ci chastinki rozpilyuyut lid rozkladayuchi metan yakij mistitsya v nomu i utvoryuyut klatrati ta diyut na inshi organichni rechovini zalishayuchi temnij zalishok bagatij vuglecem 13 Za dopomogoyu infrachervonoyi spektroskopiyi na poverhni Umbriyelya krim vodi viyavleno vuglekislij gaz yakij skoncentrovanij perevazhno na zadnij pivkuli suputnika 13 Pohodzhennya vuglekislogo gazu ne do kincya zrozumilo Vin mig utvoritisya na poverhni z karbonativ chi organichnih rechovin pid diyeyu sonyachnogo ultrafioletovogo viprominyuvannya abo zaryadzhenih chastinok sho nadhodyat z magnitosferi Urana Ostannye mozhe poyasniti asimetriyu v rozpodili vuglekislogo gazu na poverhni suputnika tomu sho ci chastinki bombarduyut same zadnyu pivkulyu Inshe mozhlive dzherelo CO2 degazaciya vodyanogo lodu v nadrah Umbriyelya yaka mozhe buti naslidkom kolishnoyi geologichnoyi aktivnosti suputnika 13 Umbriyel mozhe buti diferencijovanij en na kam yane yadro j krizhanu mantiyu 22 Yaksho ce tak to radius yadra blizko 317 km stanovit blizko 54 radiusa suputnika a masa yadra blizko 40 masi suputnika parametri rozrahovani vihodyachi zi skladu Umbriyelya U cij modeli tisk u centri Umbriyelya stanovit blizko 0 24 GPa 2 4 kbar 22 Suchasnij stan krizhanoyi mantiyi nezrozumilij hocha isnuvannya pidpoverhnevogo okeanu vvazhayetsya malojmovirnim 22 Poverhnya Redaguvati nbsp Znimok Umbriyelya z vikoristannyam fioletovih i svitlih filtriv nbsp Znimok Umbriyelya na yakomu vidileno dilyanki z riznim albedo Temni dilyanki poznacheno chervonim kolorom svitli sinimPoverhnya Umbriyelya temnisha nizh poverhnya vsih inshih suputnikiv Urana i vidbivaye menshe polovini togo svitla sho vidbivaye Ariel hocha ci suputniki blizki za rozmirami 23 Umbriyel maye duzhe nizke albedo Bonda lishe blizko 10 dlya porivnyannya v Arielya vono stanovit 23 24 Poverhnya Umbriyelya demonstruye opozicijnij efekt pri zbilshenni fazovogo kuta z 0 do 1 vidbivna zdatnist zmenshuyetsya z 26 do 19 Na vidminu vid inshogo temnogo suputnika Urana Oberona poverhnya Umbriyelya maye blakitnij vidtinok 25 Molodi udarni krateri napriklad krater Vanda en 26 she blakitnishi Krim togo perednya pivkulya trohi chervonisha nizh zadnya 27 Ce pochervoninnya jmovirno viklikane kosmichnim vivitryuvannyam cherez bombarduvannya zaryadzhenimi chastinkami i mikrometeoritami z chasiv utvorennya Sonyachnoyi sistemi 25 Odnak asimetriya koloru Umbriyelya mozhe buti pov yazana i z akreciyeyu chervonuvatogo materialu sho nadhodit iz zovnishnoyi chastini sistemi Urana jmovirno vid neregulyarnih suputnikiv Cya rechovina maye osidati perevazhno na perednij pivkuli 27 Yaksho ne vrahovuvati cyu vidminnist pivkul poverhnya Umbriyelya vidnosno odnoridna za albedo ta kolorom 25 Nazvi krateriv na Umbriyeli 28 Detali relyefu Umbriyelya nazvano na chest zlih abo temnih duhiv iz riznih mifologij 29 Krater Pohodzhennya nazvi Koordinati Diametr km Alberih Alberih karlik iz Pisni pro Nibelungiv 33 36 pd sh 42 12 sh d 33 6 pd sh 42 2 sh d 33 6 42 2 52Fin Fin trol u danskomu folklori en 37 24 pd sh 44 18 sh d 37 4 pd sh 44 3 sh d 37 4 44 3 43Gob Gob korol gnomiv 12 42 pd sh 27 48 sh d 12 7 pd sh 27 8 sh d 12 7 27 8 88Kanaloa Kanaloa golovnij zlij duh u polinezijskij mifologiyi 10 48 pd sh 345 42 sh d 10 8 pd sh 345 7 sh d 10 8 345 7 86Malingi Malingi Mutinga vidma u mifologiyi avstralijskih aborigeniv 22 54 pd sh 13 54 sh d 22 9 pd sh 13 9 sh d 22 9 13 9 164Minepa Minepa zlij duh u narodu makua z Mozambika 42 42 pd sh 8 12 sh d 42 7 pd sh 8 2 sh d 42 7 8 2 58Peri Peri zli duhi z perskoyi mifologiyi 9 12 pd sh 4 18 sh d 9 2 pd sh 4 3 sh d 9 2 4 3 61Setibos Setibos knyaz tmi u Patagoniyi 30 48 pd sh 346 18 sh d 30 8 pd sh 346 3 sh d 30 8 346 3 50Skind en Toropiga trol u danskomu folklori 1 48 pd sh 331 42 sh d 1 8 pd sh 331 7 sh d 1 8 331 7 72Vuver en Vuver iz finskoyi mifologiyi en 4 42 pd sh 311 36 sh d 4 7 pd sh 311 6 sh d 4 7 311 6 98Vokolo Vokolo zlij duh z viruvan narodu bambara sho zhive u zahidnij Africi 30 00 pd sh 1 48 sh d 30 pd sh 1 8 sh d 30 1 8 208Vanda en Vanda v mifologiyi avstralijskih aborigeniv 7 54 pd sh 273 36 sh d 7 9 pd sh 273 6 sh d 7 9 273 6 131Zliden Zliden zlij duh u slov yanskij mifologiyi 23 18 pd sh 326 12 sh d 23 3 pd sh 326 2 sh d 23 3 326 2 44 Poverhnya suputnika silno kraterovana ale na nij nemaye krateriv iz dobre pomitnimi svitlimi promenyami na vidminu vid inshih suputnikiv Urana Odne iz zaproponovanih poyasnen cogo polyagaye v tomu sho tepla yake vidilyalosya v nadrah Umbriyelya v epohu jogo utvorennya chomus bulo nedostatno dlya plavlennya kori i gravitacijnoyi diferenciaciyi en Tomu sklad Umbriyelya slabko zalezhit vid glibini i vikidi glibinnih porid navkolo udarnih krateriv ne vidriznyayutsya vid osnovnoyi poverhni Odnak nayavnist kanjoniv pokazuye sho kolis na suputniku vidbuvalisya endogenni procesi jmovirno voni prizveli do onovlennya poverhni ta znishennya starih form relyefu Narazi na Umbriyeli nazvi mayut detali relyefu lishe odnogo tipu krateri 28 Yih na comu suputniku nabagato bilshe nizh na Arieli chi Titaniyi sho vkazuye na jogo menshu endogennu aktivnist 26 Z usih suputnikiv Urana lishe Oberon maye bilshe krateriv nizh Umbriyel Diametri vidomih krateriv stanovlyat vid kilkoh kilometriv do 210 kilometriv dlya kratera Vokolo 26 28 Usi vivcheni krateri Umbriyelya mayut centralnij pik 26 ale u zhodnogo nemaye promeniv 12 Odna z golovnih harakternih ris Umbriyelya krater Vanda z nezvichajnim svitlim krugom na jogo dni Ce najprimitnisha geologichna struktura diametr kratera stanovit blizko 131 km 30 31 Yaskrave kilce na dni kratera mabut skladayetsya z porid vibitih iz nadr Umbriyelya udarnoyu diyeyu 26 U susidnih krateriv takih yak Vuver i Skind nemaye takih kilec ale ye yaskravi centralni piki 12 31 Doslidzhennya limba ru Umbriyelya viyavilo strukturu yaka mozhe buti duzhe velikim kraterom diametrom blizko 400 km i glibinoyu blizko 5 km 32 Poverhnya Umbriyelya yak i inshih velikih suputnikiv Urana vkrita sistemoyu kanjoniv yaki prostyagayutsya z pivnichnogo shodu na pivdennij zahid 33 Odnak voni poki sho ne mayut nazv oskilki rozdilnist znimkiv nedostatnya dlya yakisnogo geologichnogo kartuvannya 26 Poverhnya Umbriyelya ne zminyuvalasya pislya piznogo vazhkogo bombarduvannya tomu na nij duzhe bagato krateriv 26 Yedini oznaki endogennoyi aktivnosti kanjoni j temni bagatokutniki dilyanki skladnoyi formi diametrom vid desyatkiv do soten kilometriv 34 Ci bagatokutniki buli viyavleni z dopomogoyu tochnoyi fotometriyi znimkiv Voyadzhera 2 Voni rozpodileni bilsh mensh rivnomirno po vsij poverhni Umbriyelya z perevazhnoyu oriyentaciyeyu z pivnichnogo shodu na pivdennij zahid Deyaki taki dilyanki vidpovidayut nizovinam do kilkoh kilometriv u glibinu i mozhlivo ye rezultatom rannoyi tektonichnoyi aktivnosti 34 Narazi nemaye poyasnennya chomu poverhnya suputnika taka temna j odnoridna Mozhlivo vona vkrita tonkim sharom temnogo materialu vinesenogo na poverhnyu meteoritnimi udarami abo vikinutogo vulkanami 27 Za inshoyu versiyeyu kora Umbriyelya mozhe povnistyu skladatisya z temnoyi rechovini sho robit nemozhlivim poyavu yaskravih vikidiv navkolo krateriv Odnak comu mozhlivo superechit nayavnist yaskravogo kilcya v krateri Vanda 12 Pohodzhennya ta evolyuciya RedaguvatiYak i vsi veliki suputniki Urana Umbriyel jmovirno sformuvavsya z akrecijnogo diska gazu j pilu yakij abo isnuvav navkolo Urana protyagom yakogos chasu pislya formuvannya planeti abo z yavivsya pri potuzhnomu zitknenni yake shvidshe za vse i dalo Uranu duzhe velikij nahil osi obertannya 35 Tochnij sklad tumannosti nevidomij odnak visha gustina suputnikiv Urana u porivnyanni z suputnikami Saturna vkazuye na te sho cya tumannist jmovirno mistila menshe vodi 12 Znachni kilkosti vuglecyu i azotu mozhlivo buli nayavni u viglyadi monooksidu vuglecyu CO i molekulyarnogo azotu N2 a ne amiaku j metanu 35 Suputnik sho formuvavsya v takij tumannosti povinen mistiti menshu kilkist vodyanogo lodu z klatratami CO i N2 i bilshu kilkist kam yanistih porid a tomu mati vishu gustinu 12 Utvorennya Umbriyelya shlyahom akreciyi jmovirno trivalo protyagom kilkoh tisyach rokiv 35 Zitknennya sho suprovodzhuvali akreciyu viklikali nagrivannya zovnishnih shariv suputnika 36 Maksimalna temperatura blizko 180 K bula dosyagnuta na glibini blizko 3 km 36 Pislya zavershennya formuvannya zovnishnij shar oholonuv v toj chas yak vnutrishnij pochav nagrivatisya cherez rozpad radioaktivnih elementiv sho mistilisya v jogo porodah 12 Poverhnevij shar za rahunok oholodzhennya stiskavsya u toj chas yak vnutrishnij za rahunok nagrivannya rozshiryuvavsya Ce viklikalo v kori Umbriyelya silni mehanichni napruzhennya yaki mogli prizvesti do utvorennya rozlomiv 37 Cej proces mav trivati blizko 200 mln rokiv Takim chinom endogenna diyalnist na Umbriyeli mala pripinitisya kilka milyardiv rokiv tomu 12 Tepla vid pochatkovoyi akreciyi i podalshogo rozpadu radioaktivnih elementiv moglo vistachiti dlya plavlennya lodu 36 yaksho v nomu ye yaki nebud antifrizi napriklad amiak u viglyadi gidratu amiaku i sil 22 Tanennya moglo prizvesti do viddilennya lodu vid kamenyu i formuvannya kam yanogo yadra otochenogo krizhanoyu mantiyeyu 26 Na mezhi yadra j mantiyi mig utvoritisya shar ridkoyi vodi okean nasichenij rozchinenim amiakom Evtektichna temperatura ciyeyi sumishi dorivnyuye 176 K Yaksho temperatura okeanu bula nizhcha vid cogo znachennya to vin mav davno zamerznuti 22 Sered usih suputnikiv Urana Umbriyel najmenshe piddavavsya diyi endogennih procesiv peretvorennya poverhni 26 hocha ci procesi mogli vplivati na Umbriyel yak i na inshi suputniki na pochatku jogo isnuvannya 34 Na zhal vidomostej pro Umbriyel dosi duzhe malo i voni znachnoyu miroyu obmezheni doslidzhennyami vikonanimi Voyadzherom 2 Doslidzhennya Redaguvati nbsp Grafichna rekonstrukciya chastkovogo pokrittya Urana UmbriyelemYedini na sogodnishnij den zobrazhennya Umbriyelya krupnim planom buli otrimani Voyadzherom 2 yakij sfotografuvav suputnik pid chas doslidzhen Urana u sichni 1986 roku Najmensha vidstan do suputnika stanovila 325 000 km 38 i najdetalnishi znimki mayut rozdilnist 5 2 km 26 Zobrazhennya pokrivayut lishe 40 poverhni i lishe 20 znyati z yakistyu dostatnoyu dlya geologichnogo kartuvannya 26 Pid chas prolotu pivdenna pivkulya Umbriyelya yak i inshih suputnikiv bula obernena do Soncya a pivnichna pivkulya ne bulo osvitlena i ne mogla buti vivchena 12 Ni Uran ni Umbriyel ne vidviduvali 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