Eminyakeni eyishumi nanye kamuva, igama elithi "amaplanethi amancane" lisasetshenziswa, yize lingasasetshenziswa. Lokhu kungase kube ngenxa yokungazi ukuthi lezi zidalwa zasezulwini zihlelwe kabusha yi-International Astronomical Union (IAU). I-IAU ibambe umhlangano lapho yethula khona ukuhlukaniswa okusha kwezinto zasezulwini ngaphakathi kweSolar System, ezichazwe kabusha zaba izinhlobo ezintathu.
Lesi sigaba, esasikhona isikhathi esingaphezudlwana kweminyaka eyishumi, sashintsha saba yilokho okwaziwa manje ngokuthi amaplanethi, amaplanethi amafushane, kanye nemizimba emincane yeSistimu Yelanga . Ngakho-ke, igama elithi "iplanethi encane," elalibizwa nangokuthi "iplanethi," laphelelwa yisikhathi ngo-2006 lapho lifakwa esigabeni semizimba emincane yeSistimu Yelanga. Lokhu kwenzeka ngoba le mizimba yasezulwini ayiwona amasathelayithi noma ama-comet, kodwa incane kuneplanethi evamile.
Ungafunda futhi: I-GLIESE 876B, IPLANETHI ETHOLAKALE NGO-1998, INGABE YIPLANETI YESONTO LESISHIYAGALOMBILI
Ngaphezu kwalokho, lezi zidalwa zasezulwini zikhulu kunezinhlayiya ze-meteoroid, ngokuvamile ezihlukaniswa njengezinobukhulu obuphezulu bamamitha angu-50. Kodwa-ke, ukuze kuhlanganiswe zonke izidalwa zasezulwini ngaphakathi kwalezi zigaba ezintathu, abacwaningi abaningi bahlanganisa lezi zidalwa ezincane namasathelayithi, ama-comet, nama-meteoroid ngaphansi kwesigaba esifanayo sezidalwa ezincane zeSistimu Yelanga. Ukuze uthole ulwazi olwengeziwe ngalezi zenzakalo, ungabheka isihloko sethu ngama- asteroid.
I-IUA ichaza imizimba emincane yeSistimu Yelanga njengemizimba yonke yasezulwini , nakuba ingeyona amasathelayithi, engakafinyeleli usayizi owanele. Okusho ukuthi, ayikafinyeleli isisindo esivumela ukuthi ifinyelele ukulingana kwe-hydrostatic.
Ukuhlukaniswa Kwasendulo Kwamaplanethi Amancane
Nakuba igama elithi "Amaplanethi Amancane" okwamanje lingasebenzi, kubalulekile njalo ukuqonda umlando walezi zidalwa zasezulwini. Zahlukaniswa kanjani? Impendulo iwukuthi Amaplanethi Amancane, ngokwezigaba zawo zangaphambilini, ayehlukaniswa ngokwesiko ngemindeni namaqembu ngokusekelwe ezicini zemizila yawo . Lolu kwakuyisistimu yokuqala yokuhlela, yingakho ayenalo leli gama elinganembile. Ukuze uthole imininingwane eyengeziwe ngesakhiwo seSistimu yethu Yelanga , vakashela ku-[link missing].
Ngaphezu kwalokho, le ndlela yokuhlela ngezigaba yaholela ekuhlukaneni okukhulu, ngakho-ke isiko kwakuwukuqamba iqembu lama-asteroid ngegama lelungu lokuqala elitholakale eqenjini, elalivame ukuba likhulu kunawo wonke. Imindeni yamaMinor Planet yayingabonakala ngaphakathi kwebhande lama-asteroid ; futhi amaqembu ayebhekisela ezinhlanganweni ezazikhululekile futhi ngenxa yalokho zinamandla.
Amaplanethi Amancane Aqoshiwe
Ngokuphathelene nezinkanyezi , kubaluleke kakhulu ukurekhoda noma yikuphi ukungafani emkhathini. Noma yikuphi ukutholwa noma imfihlakalo kumele kubhalwe phansi ngabacwaningi bamanje nabazayo. Ngenxa yalokhu, izazi eziningi namuhla zingaqhubeka nokufunda izenzakalo ezenzeka esikhathini esidlule ndawana thize eNdaweni Yonke . Kuze kube negalelo encazelweni enembile yezigaba, njengoba kwenzekile kulokhu.
Ceres
Amaplanethi amancane manje ahlukaniswa phakathi kwezindikimba ezincane zeSistimu Yelanga. Kodwa ngaphambi kwalokho, kwakukhona uhlu lwawo olwaluqoshwe njengamaplanethi amancane. Elokuqala kwakuyiCeres , elatholakala ngoSuku Lonyaka Omusha ngo-1801 yiGiuseppe Piezzi wase-Italy. Nakuba iCeres empeleni yayibhekwa njengeplanethi entsha ngalowo nyaka, ayisahlukaniswa njengomzimba omncane kodwa njengeplanethi encane. Uma ufuna ukufunda kabanzi ngamaplanethi amancane , vakashela iwebhusayithi.
sedna
Elinye iplanethi elincane laqanjwa ngokuthi iSedna . Ngesikhathi sika-2003, lalibekwe endaweni yama-90377 ochungechungeni lwamaplanethi amancane atholakale futhi lachazwa yi -Jet Propulsion Laboratory ye-NASA njengento ekude kakhulu ohlelweni lwelanga, njengoba umjikelezo walo wawubonakala kakhulu ukuthi uqhelelene neLanga.
Ungase uthande nokufunda: Izindlela Ezi-3 Zokuthola Ukuphila Kwangaphandle Kwamaplanethi EZINGATHI NGOKOMHLABA
i-orcus
Lo mzimba wasezulwini uyinombolo 90482 ochungechungeni lweMinor Planets, okuyigama elathola ngo-2004. Ukubaluleka kwamarekhodi kusekutheni ucwaningo luveze ukuthi yize i-Orcus yatholakala ngo-2004, izithombe zalo mzimba wasezulwini zatholakala kusukela ngo-1951. Lokhu kubonisa ukuthi wawusuvele udale isithakazelo phakathi kwezazi zezinkanyezi ngaleso sikhathi. Ungafunda kabanzi ngemizimba emincane yesimiso sonozungezilanga ukuze ujule kakhulu kulesi sihloko.
Ukuqokwa kwesikhashana kwanika i-Orcus ithuba lokubhekwa njengeplanethi, yingakho idale isithakazelo esikhulu kangaka. Kodwa-ke, okwamanje ayibhekwa njengeplanethi, kodwa kungenzeka ukuthi kamuva ingahlukaniswa njengenye yamaplanethi amafushane ku-Solar System. Ngaphandle kwe-Orcus, ezinye izinto ezifakiwe phakathi kwamaPlanethi Amancane yilezi: i-Varuna, i-Quaoar, i-Pallas , i-2002aw, i-2002tx, i-Ixion, i-Hygiea, ne-Vesta.
Imizimba emincane yeSolar System
Lezi yizinto zasemkhathini zemvelo ezizungeza iLanga. Akuwona amaplanethi, amaplanethi amancane, noma amasathelayithi. Ngenxa yalesi sizathu, ezinye izazi zikhomba ukuthi izidalwa ezincane zifaka phakathi ama-comet , ama-asteroid , kanye nama-meteoroid. Kodwa-ke, ezinye, njengoba kuchaziwe ngaphambilini, zibonisa ukuthi izidalwa ezincane zikhulu, njengoba i-meteoroid, isibonelo, ilinganisa ukuphakama okungamamitha angu-50. Ungafunda kabanzi ngalokhu ngomongo wezidalwa ezincane.
Kodwa-ke, eMhlabeni zibonakala zincane kakhulu, isici esenza kube nzima ukuzibona futhi okuholela ekutholakaleni kwazo okuqhubekayo. Lokhu kuphumela ekungalungi mayelana nenani lazo lonke. Inani eliqondile alaziwa, njengoba ukuzibona kudinga ukuzibheka ngezindlela ezahlukene ukuze kulinganiswe ukuthi yiziphi izidalwa ezincane ohlelweni lwelanga nokuthi zingaki. Ungabheka futhi isihloko sethu ngama- asteroid athinta uMhlaba ukuze uqonde imiphumela yalezi zidalwa ezincane.
Umzimba omncane ohlelweni lwelanga awunawo usayizi noma isisindo esanele sokwamukela isimo esiyindilinga esibalulekile esingawuhlukanisa njengeplanethi ezungeza iLanga. Lokhu kubhekisela ezinhlotsheni zamaplanethi, amaplanethi amakhulu, namaplanethi amancane . Imizimba emincane ayiweli kunoma iyiphi yalezi zigaba.
Kulokhu, kubalulekile ukuqaphela ukuthi asikho isigaba esithile samaplanethi amafushane. Kuze kube yilapho lokho kuchazwa, igama elithi "iplanethi encane" ligcinwa ngaphandle kwezinye izimo, njengoba lokhu kuhlukaniswa kungasasebenzi ngokusemthethweni. Ngenxa yalesi sizathu, i-IAU iyaqhubeka nokunikeza izinombolo ku-Minor Planet Catalog, ivuma isigaba ngaphakathi kwayo ngaphansi kwegama elisha lezidalwa zasezulwini.
Kuhlonzwe Imizimba Emisha Encane
NgoJulayi 2016, kwase kutholakale izidumbu ezincane ezingu-40 ngaphakathi kweSolar System; yize ezinye izihloko zazibiza lokhu kutholwa ngokuthi amaPlanethi Amancane. Ngisho nangemva kweminyaka eyishumi yokungasetshenziswa, leli gama lisamukelwa. Ukuhlonza kwenziwa yiqembu lezazi zezinkanyezi zaseYurophu ezivela eCanary Islands Institute of Astrophysics (IAC) , futhi lokhu kutholwa kungaba nomthelela ekuqondeni kwethu imvelaphi yazo.
Lezi zinto zasemkhathini zizosisiza siqonde izici ezithile ze- cosmology , eziphathelene nokwakheka kanye nokuvela kweSistimu Yelanga. Ngaphezu kwalokho, zinganikeza ulwazi oluzokhanyisa amathuba okuba khona kwemithelela engenzeka eMhlabeni. Lesi yisikhathi sokuqala ukuthi idatha yocwaningo, ehlola isampula enkulu yezinto ezincane ezizungeza iLanga, ihlaziywe.
Izazi zezinkanyezi zidinga ukuvuselela izindlela zazo zokuqoqa idatha ukuze zithole ulwazi oluningiliziwe mayelana neSistimu Yelanga kanye nesikhala sonke . Okwamanje, igama elithi "imizimba emincane" yigama elisha lamaplanethi amancane; noma kunjalo, amanye amarekhodi azoqhubeka nokusebenzisa lelo gama ukuze alondoloze ukuqhubeka nocwaningo lwangaphambilini ngale ndaba.
Ungase uthande nokufunda: AMAQINISO AYI-6 + IZIMFANELO EZI-4 EZIFANELE KAKHULU NGEZINTO EZINGU-MUONS
