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Zapros Alpha Centauri perenapravlyaetsya syuda o kompyuternoj igre sm Sid Meier s Alpha Centauri A lfa Centa vra a Centavra trojnaya zvyozdnaya sistema v sozvezdii Centavra Dva komponenta solncepodobnye a Centavra A i a Centavra B nevooruzhyonnomu glazu vidny kak odna zvezda 0 27m blagodarya chemu a Centavra yavlyaetsya tretej po yarkosti zvezdoj nochnogo neba Tretij komponent nevidimyj nevooruzhyonnym glazom krasnyj karlik Proksima Centavra ili a Centavra C kotoryj nahoditsya ot yarkoj dvojnoj zvezdy na uglovom rasstoyanii 2 2 Vse tri yavlyayutsya blizhajshimi k Solncu zvyozdami 4 36 svetovyh goda prichyom na dannyj moment Proksima Centavra neskolko blizhe ostalnyh Alfa Centavra ABCKratnaya zvezdaRaspolozhenie a Centavra pokazano strelkojGrafiki nedostupny iz za tehnicheskih problem Sm informaciyu na Fabrikatore i na mediawiki org Nablyudatelnye dannye Epoha J2000 0 Pryamoe voshozhdenie 14ch 39mSklonenie 60 50 Rasstoyanie 4 36 sv letVidimaya zvyozdnaya velichina V 0 01 1 34 11 05Sozvezdie CentavrAstrometriyaLuchevaya skorost Rv 21 6 km cSobstvennoe dvizhenie pryamoe voshozhdenie 3678 19 mas v god sklonenie 481 84 mas v godParallaks p 747 23 1 17 masAbsolyutnaya zvyozdnaya velichina V 4 38 5 71 15 49Spektralnye harakteristikiSpektralnyj klass G2V K1V M5 5VePokazatel cveta B V 0 71 0 88 1 97 U B 0 24 0 64 1 54Fizicheskie harakteristikiMassa 1 10 0 90 0 123 M Radius 1 227 0 865 0 14 R Vozrast 6 1 109 letTemperatura 5750 5250 2700 KSvetimost 1 519 0 500 0 00006 L Metallichnost 130 230 Chast ot G Cloud vd Svojstva gravity 4 30 4 37Elementy orbityPeriod P 79 91 let 500 000 letBolshaya poluos a 17 59 Ekscentrisitet e 0 516Naklonenie i 79 24 vUzel W 204 87 Epoha periastra T 1955 56Kody v katalogahRigil Kentaurus Rigil Kent Toliman Bungula CCDM J14396 6050 FK5 538 CPD 60 5483 GC 19728 a Cen AHD 128620 HIP 71683 HR 5459 LHS 50 SAO 252838 GCTP 3309 00 Gl 559 A a Cen BHD 128621 HIP 71681 HR 5460 LHS 51 Gl 559 Proxima Cen HIP 70890 LHS 49Informaciya v bazah dannyhSIMBAD dannyeARICNS dannyeZvyozdnaya sistemaU zvezdy sushestvuet 3 komponenta Ih parametry predstavleny nizhe Komponent AVidimaya zvyozdnaya velichina 0 01Absolyutnaya zvyozdnaya velichina V 4 38 0 01Spektralnyj klass G2V Pokazatel cveta B V 0 71 U B 0 24Massa 1 1 0 001 M Radius 1 227 0 001 R Temperatura 5271 KSvetimost 1 519 0 001 L Metallichnost 0 252Vrashenie 2 64 km sSIMBAD alf Cen AKomponent BVidimaya zvyozdnaya velichina 1 33Spektralnyj klass K1VPokazatel cveta B V 0 88 U B 0 68Massa 0 934 0 01 M Radius 0 8632 0 0037 R Temperatura 5565 KMetallichnost 0 16Vrashenie 3 52 km sSIMBAD alf Cen BKomponent COtkryvatel Innes Robert Torbern EjtonData otkrytiya 1915Vidimaya zvyozdnaya velichina 11 13Absolyutnaya zvyozdnaya velichina V 15 49Spektralnyj klass M4 5Pokazatel cveta B V 1 82 U B 1 26Peremennost UV Kita vrashayushayasya peremennaya vd i BY DrakonaMassa 0 12 0 015 M Radius 0 141 0 021 R Vozrast 4 850 000 000 godTemperatura 3306 KSvetimost 0 0017 L Metallichnost 0 04Vrashenie 2 7 0 3 km sSIMBAD NAME Proxima CentauriIstochniki Informaciya v Vikidannyh Mediafajly na VikiskladeAlfa Centavra AB yarkaya zvezda sleva Proksima Centavra obvedena krasnym kruzhkom Yarkaya zvezda v pravom nizhnem uglu eto Beta Centavra Nesmotrya na svoyu yarkost i blizost alfa Centavra otsutstvuet na flage Brazilii gde izobrazheno 27 zvyozd vidimyh v Yuzhnom polusharii Vse komponenty a Centavra soglasno oficialno prinyatomu MAS v 2016 godu spisku sobstvennyh nazvanij zvezd poluchili imena komponent A Ri gil Kenta urus ili Ri gel Kenta urus latinizirovannaya forma ot arab رجل القنطور riʤl al qanatur noga Kentavra a komponent B Tolima n vozmozhno ot arab الظلمان al Zulman Strausy Dlya tretego komponenta sohraneno tradicionnoe nazvanie Proksima Centavra Do polucheniya oficialnyh imen v 2016 godu takzhe mozhno bylo vstretit nazvanie Bungula vozmozhno ot lat ungula kopyto Oboznacheniya v osnovnyh zvyozdnyh katalogah a Centavra A HD 128620 HR 5459 CP 60 5483 GCTP 3309 00A LHS 50 a Centavra B HD 128621 HR 5460 GCTP 3309 00B LHS 51 Harakteristiki sistemySravnitelnye razmery komponentov sistemy a Centavra i Solnca Dve glavnye zvezdy a Centavra A i a Centavra B prinadlezhat glavnoj posledovatelnosti i blizki po harakteristikam k Solncu a Centavra A okazalas pervoj zvezdoj dlya kotoroj udalos provesti pryamoe nablyudenie atmosfery pokazavshee eyo shozhest so svetilom nashej sistemy v atmosfere obnaruzhen tonkij holodnyj sloj Vozrast sistemy ocenivaetsya v 6 milliardov let chto bolshe vozrasta Solnca kotoryj sostavlyaet 4 5 milliarda let Obe zvezdy a Centavra vrashayutsya vokrug obshego centra mass po ellipticheskoj orbite s ekscentrisitetom 0 52 i bolshoj poluosyu 23 4 a e Period obrasheniya 79 91 goda Ih trigonometricheskij parallaks raven 742 1 1 4 uglovoj millisekundy Sobstvennoe dvizhenie zvyozd A i B ravno 3 643 0 012 uglovoj sekundy v god po pryamomu voshozhdeniyu i 0 697 0 009 uglovoj sekundy v god po skloneniyu istochnik ne ukazan 1975 dnej radialnaya skorost sostavlyaet 22 445 0 0024 km s Maksimalnoe uglovoe rasstoyanie na nebesnoj sfere mezhdu nimi primerno ravno 22 Kazhusheesya i istinnoe dvizhenie zvyozd v sisteme Alfy Centavra Komponent A dlya naglyadnosti polagaetsya nepodvizhnym i pokazano otnositelnoe orbitalnoe dvizhenie komponenta V Tonkij ellips oboznachaet traektoriyu vidimuyu s Zemli istinnoj zhe yavlyaetsya forma orbity esli rassmatrivat eyo perpendikulyarno ploskosti orbitalnogo dvizheniya Ishodya iz skorosti obrasheniya radialnoe razdelenie A i B vdol linii vizirovaniya dostiglo maksimuma v 2007 godu kogda B nahodilsya za A Na orbite zdes ukazany 80 tochek rasstoyanie vo vremeni mezhdu kotorymi priblizhyonno ravno 0 99888 let ili 364 84 dnya Naklonenie orbity zvyozdnoj pary alfy Centavra A i B k kartinnoj ploskosti nablyudatelya s Zemli sostavlyaet 79 205 0 041 gradusa to est orbita sistemy nablyudaetsya pochti s rebra chto povyshaet veroyatnost obnaruzheniya planet v sisteme metodom tranzita Ploskost dvojnoj sistemy Alfa Centavra AB ne komplanarna ploskosti orbity Proksimy Centavra vokrug Alfy Centavra AB Kinematicheskie harakteristiki Proksimy Centavra otlichayutsya ot harakteristik glavnyh zvyozd sistemy Proksimu ot a Centavra AB na nebesnoj sfere otdelyaet uglovoe rasstoyanie okolo 2 chto v 4 raza bolshe uglovogo diametra Luny Proksima Centavra lat proxima blizhajshaya nahoditsya primerno v 15 000 700 a e okolo 0 21 sv goda ot dvuh centralnyh zvyozd sistemy Period obrasheniya Proksimy vokrug a Centavra AB sostavlyaet ok 500 tys let Koordinaty a Centavra A pryamoe voshozhdenie a2000 14ch39m36s 5 sklonenie d2000 60 50 02 Koordinaty a Centavra B pryamoe voshozhdenie a2000 14ch39m35s 1 sklonenie d2000 60 50 13 Harakteristiki komponentov sistemy a Centavra a Centavra A a Centavra B Proksima CentavraAbsolyutnaya zvyozdnaya velichina 4 38 5 71 15 53Spektralnyj klass G2V K1V M5 5VeSvetimost v solnechnyh 1 519 0 5 6 10 5Diametr v solnechnyh 1 227 0 865 0 14Rasstoyanie do Solnca sv let 1 4 36 4 22 1 uchityvaetsya vremya kotoroe proshyol svet do Solnca a ne naoborot i s uchyotom iskrivleniya sveta pod vozdejstviem centra nashej galaktiki i inyh obektov Vzaimnoe raspolozhenie Solnca Alfy Centavra i Proksimy Centavra seraya tochka pod Alpha Centauri AB eto proekciya polozheniya Proksimy Centavra na to zhe rasstoyanie ot Solnca chto i do Alfy Centavra NablyudeniyaGlavnye zvyozdy sistemy A i B slishkom blizki drug k drugu chtoby ih mozhno bylo razlichit nevooruzhyonnym glazom poskolku uglovoe rasstoyanie mezhdu nimi variruetsya mezhdu 1 7 i 22 uglovymi sekundami no blagodarya vytyanutosti orbit obe zvezdy legko razlichimy s pomoshyu nebolshih diametrom obektiva poryadka 5 sm teleskopov V 2010 godu uglovoe rasstoyanie mezhdu komponentami sostavlyalo 6 74 uglovoj sekundy v 2011 godu 6 04 uglovoj sekundy Uglovoe rasstoyanie mezhdu komponentami stalo minimalnym 4 uglovyh sekundy v fevrale 2016 goda Naibolshee uglovoe rasstoyanie mezhdu komponentami sistemy poslednij raz nablyudalos v fevrale 1976 goda sleduyushee nastupit v yanvare 2056 goda V yuzhnom polusharii alfa Centavra obrazuet vneshnyuyu zvezdu Ukazatelej ili Yuzhnyh ukazatelej navigacionnyj asterizm nazvannyh tak potomu chto liniya cherez betu Centavra Hadar Agenu v 4 5 zapadnee ukazyvaet pryamo na sozvezdie Yuzhnyj krest Ukazateli legko otlichayut nastoyashij Yuzhnyj krest ot Lozhnogo kresta Yuzhnee shiroty 29 30 zvezda alfa Centavra yavlyaetsya nezahodyashej zvezdoj Sredi gorodov gde ona nikogda ne zahodit za gorizont Santyago Montevideo Buenos Ajres Portu Alegri Kejptaun Kanberra Sidnej Melburn Tak zhe kak i Yuzhnyj krest eta zvezda raspolozhena slishkom gluboko v Yuzhnom polusharii neba chtoby nablyudatsya iz srednih severnyh shirot Na territorii Rossii i voobshe byvshego SSSR ona ne voshodit nigde dazhe v Serhetabade Yuzhnee shiroty 29 10 to est yuzhnee Deli Kuvejta i Hyustona i do ekvatora na protyazhenii severnogo leta alfa Centavra vidna nevysoko nad gorizontom na yuge Verhnyaya kulminaciya zvezdy ezhegodno proishodit v polnoch 24 aprelya ili v 21 00 8 iyunya Planetnaya sistemaNa mart 2022 goda v sisteme izvestny odna podtverzhdyonnaya i tri nepodtverzhdyonnye ekzoplanety Bolshoe kolichestvo detalnoj informacii ob etoj sisteme ozhidaetsya v blizhajshie gody ot eyo obsledovaniya novymi teleskopami uzhe vstupivshim v stroj JWST planiruemym Toliman i drugimi Alfa Centavra A b U Alfy Centavra A v fevrale 2021 goda byl obnaruzhen kandidat v ekzoplanety Alfa Centavra A b v zone obitaemosti s orbitalnym radiusom i periodom primerno ravnymi zemnym podtverzhdenie ili oproverzhenie sushestvovaniya kotorogo eshyo predstoit Alfa Centavra B b Provodimye nablyudeniya dolgoe vremya ne mogli obnaruzhit planety v sisteme Alfy Centavra Tolko 16 oktyabrya 2012 goda astronomy Evropejskoj yuzhnoj observatorii obyavili ob otkrytii planety Alfa Centavra B b s massoj blizkoj k zemnoj na orbite vokrug a Centavra B Planeta byla obnaruzhena metodom izmereniya kolebanij luchevyh skorostej s pomoshyu spektrografa HARPS Dlya etogo astronomam ponadobilos bolee chetyryoh let nablyudenij Zhenevskaya gruppa nablyudala spektr zvezdy alfa Centavra B s fevralya 2008 po iyul 2011 goda Vsego bylo sdelano 459 izmerenij luchevoj skorosti tochnost edinichnogo izmereniya sostavila 0 8 m s Takoe bolshoe kolichestvo nakoplennyh dannyh pozvolilo vyyavit i uchest razlichnye istochniki shuma zvyozdnye kolebaniya poverhnost zvezdy Alfa Centavra B slegka kolebletsya s periodami menee 5 minut granulyaciyu poverhnosti vliyanie pyaten na srednyuyu luchevuyu skorost zvezdy dolgovremennuyu aktivnost svyazannuyu s magnitnym polem i pr Delo otchasti oblegchilos tem chto blesk Alfy Centavra B kak i mnogih drugih oranzhevyh karlikov spektralnyh klassov K0 V i K1 V isklyuchitelno stabilen Schitalos chto planeta b nahoditsya ochen blizko k svetilu v 0 04 a e 6 millionov km ne popadaya v obitaemuyu zonu Period obrasheniya vokrug zvezdy ocenyon v 3 236 dnya a minimalnaya massa planety okolo 1 13 zemnoj V oktyabre 2015 goda planeta byla zakryta to est priznana nesushestvuyushej tak kak bylo dokazano chto 3 26 dnevnyj RV signal v izmereniyah zhenevskoj gruppy poyavilsya iz za osobennostej matematicheskoj obrabotki dannyh Proksima Centavra b 12 avgusta 2016 goda v zhurnale Der Spiegel poyavilos soobshenie ob otkrytii planety Proksima Centavra b v zone obitaemosti krasnogo karlika Proksima Centavra 24 avgusta 2016 goda eta informaciya byla podtverzhdena sotrudnikami Evropejskoj yuzhnoj observatorii Proksima Centavra c Proksima Centavra c nepodtverzhdyonnaya planeta nahodyashayasya gorazdo dalshe zony obitaemosti Otkryta v yanvare 2020 goda Proksima Centavra d Proksima Centavra d nepodtverzhdyonnaya planeta minizemlya massoj 0 26 0 05 massy Zemli chetvert massy Zemli v dva raza bolshe massy Marsa nahodyashayasya blizhe zony obitaemosti Otkryta v 2020 godu Drugie vozmozhnye planety Predpolagaemye planety mogut obrashatsya otdelno vokrug a Centavra A ili a Centavra B ili Proksimy Centavra ili mogut imet bolshie orbity vokrug dvojnoj sistemy a Centavra AB Poskolku obe zvezdy priblizitelno podobny Solncu naprimer v vozraste i metallichnosti astronomy proyavlyayut osobennyj interes k poisku planet v etoj sisteme Neskolko komand zayavivshih o svoih issledovaniyah v etom napravlenii ispolzuyut razlichnye metody luchevoj skorosti ili prohozhdeniya zvyozd dlya issledovaniya etoj sistemy Kompyuternoe modelirovanie pokazalo vozmozhnost formirovaniya planety v predelah 1 1 a e 160 mln km ot a Centavra B i chto orbita etoj planety mozhet ostavatsya stabilnoj ne menee 250 millionov let Tela vokrug zvezdy A mogut obrashatsya na nemnogo bolshih rasstoyaniyah vsledstvie bolee silnoj gravitacii zvezdy A Krome togo otsutstvie korichnevyh karlikov i gazovyh gigantov vokrug A i V naoborot uvelichivayut shansy obnaruzheniya planet zemnogo tipa Po sostoyaniyu na 2002 god tehnologii ne pozvolyali obnaruzhit planety zemnoj gruppy vokrug Alfy Centavra No teoreticheskie raschyoty vozmozhnostej obnaruzheniya metodom luchevoj skorosti pokazali chto celenapravlennye i regulyarnye issledovaniya teleskopom klassa 1m proyasnit mogut s bolshoj veroyatnostyu obnaruzhit gipoteticheskuyu planetu s massoj v 1 8 massy Zemli v zone obitaemosti a Centavra B v techenie tryoh let Po dannym nablyudenij kosmicheskogo teleskopa Hubble v 2013 i 2014 godah za zvezdoj alfa Centavra B uchyonye predpolozhili vozmozhnost sushestvovaniya u etoj zvezdy planety razmerom primerno s Zemlyu obrashayushejsya vokrug Alfy Centavra B menee chem za 20 4 dnya Odno iz issledovanij 2012 goda provedyonnoe astronomami iz Edinburgskogo universiteta pokazyvaet chto u zvezdy a Centavra B obitaemaya zona nahoditsya na rasstoyanii ne menee 0 5 i ne bolee 0 9 a e ot zvezdy istochnik ne ukazan 1692 dnya Pri etom srednyaya temperatura poverhnosti gipoteticheskoj planety v predelah etoj zony budet otlichatsya vsego na 4 5 kelvinov v zavisimosti ot rasstoyaniya do vtoroj zvezdy a Centavra A Modelirovanie pokazyvaet chto planeta obrashayushayasya vokrug a Centavra B budet lish raz v 70 let priblizhatsya k zvezde a Centavra A na rasstoyanie pri kotorom eta zvezda budet vliyat na klimat planety V ostalnoe vremya ona vliyaniya na klimat planety okazyvat ne budet Takzhe issledovateli otmechayut chto podobnye scenarii vozmozhny tolko pri nalichii na planete okeanov podobnyh zemnym Esli zhe planeta budet predstavlyat soboj suhuyu pustynyu kak Mars to kolebaniya temperatury budut gorazdo silnee V 2019 godu s pomoshyu teplovogo infrakrasnogo koronografa NEAR angl Near Earths in the AlphaCen Region ustanovlennogo na odnom iz chetyryoh 8 2 metrovyh teleskopov kompleksa Ochen bolshogo teleskopa Evropejskoj yuzhnoj observatorii v Chili v sisteme Alfa Centavra nachalsya poisk planet v obitaemoj zone u zvyozd A i B Posle pochti 100 chasov nablyudenij spektrometrom VISIR v infrakrasnom diapazone na dline voln menee 10 mikron i udaleniya lozhnyh signalov na okonchatelnom izobrazhenii vyyavili istochnik sveta C1 kotoryj mozhet byt ekzoplanetoj Alfa Centavra A b razmerom s Neptun vnutri obitaemoj zony ili pylevym diskom Mezhzvyozdnye polyotyPredpolagaetsya chto alfa Centavra stanet odnoj iz pervyh celej mezhzvyozdnyh polyotov Preodolenie rasstoyaniya mezhdu Solncem i a Centavra pri ispolzovanii sovremennyh tehnologij v razumnye sroki nevozmozhno Odnako vozmozhnosti tehnologij solnechnogo parusa ili yadernogo raketnogo dvigatelya mogut pozvolit sovershit takoj perelyot za neskolko desyatiletij V 2016 godu bylo zayavleno o nachale podgotovki polyota nanosputnika na lazernyh parusah Breakthrough Starshot na Alfu Centavra kotoryj mozhet preodolet rasstoyanie do blizhajshej zvezdy za 15 let Blizhajshee okruzhenie zvezdyBlizhajshee okruzhenie Solnca Sleduyushie zvyozdnye sistemy nahodyatsya na rasstoyanii v predelah 10 svetovyh let ot sistemy Alfy Centavra Zvezda Spektralnyj klass Rasstoyanie sv letLuman 16 AB L7 5 T0 5 3 68Solnce G2 V 4 37Zvezda Barnarda M4 0 V 6 5Ross 154 M3 5 Ve 8 1Volf 359 M5 8 Ve 8 3Sirius AB A1 V DA2 VII 9 5Epsilon Eridana K2 Ve 9 7V massovoj kultureEtot razdel predstavlyaet soboj neuporyadochennyj spisok raznoobraznyh faktov o predmete stati Pozhalujsta privedite informaciyu v enciklopedicheskij vid i raznesite po sootvetstvuyushim razdelam stati Spiski predpochtitelno osnovyvat na vtorichnyh obobshayushih avtoritetnyh istochnikah soderzhashih kriterij vklyucheniya elementov v spisok V drugom yazykovom razdele est bolee polnaya statya Alpha Centauri in fiction angl Poskolku dannaya zvyozdnaya sistema yavlyaetsya blizhajshej k nam fantasty izdavna svyazyvali s nej nachalo ery mezhzvyozdnyh perelyotov Dalnij Centavr angl Far Centaurus 1944 nauchno fantasticheskij rasskaz A E van Fogta Zadacha tryoh tel nauchno fantasticheskij roman Lyu Cysinya Avatar nauchno fantasticheskij film 2009 goda Dzhejmsa Kemerona Filmy Bluzhdayushaya Zemlya i roman James Cameron s Avatar The Game kompyuternaya igra shuter ot tretego lica Sm takzheAlfa Centavra B b Spisok blizhajshih zvyozd Spisok samyh yarkih 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