Description Belt asteroids na hasken rana tsarin. Main Belt asteroids

Description na hasken rana tsarin ƙunshi ba kawai bayanai game da takwas taurari da kuma Pluto, amma da dama Tsarin, ciki har da wani babban yawan cosmic jikinsu. Wadannan sun hada da Kuiper bel, da watsar da Disc, da Oort girgije, kazalika da asteroid bel. A karshen da za a tattauna a kasa.

definition

Kalmar "asteroid" da aka saba da William Herschel mawaki Charlza Berni. Maganar ne na Greek asali kuma yana nufin "kamar star". A amfani da irin wannan kalma an hade tare da cewa da nazari na sarari na sarari ta hanyar kawo nesa kusa asteroids da jũna kama Star: kama batu sabanin taurari wanda ya yi kama da ƙafafun.

Kamar yadda irin wannan, akwai wani definition da kalmar a yau. Babban halayyar alama na asteroid bel abubuwa da kuma irin Tsarin - size. Ƙananan iyaka - 50 m diamita karami jiki Space -. Shi ne meteor. A sama da iyaka - diamita daga cikin Dwarf duniya Ceres, kusan 1000 km.

Location da kuma wasu siffofin

A asteroid bel ta'allaka tsakanin falakinsu na Mars kuma Jupiter. Yau akwai fiye da 600,000 na ta abubuwa, na da a kan 400,000 suna da nasu lambar, ko da sunan. Aƙalla 98% na karshe - abubuwa asteroid bel m daga rana da nesa da 2.2 to 3.6 AU. The most jiki daga gare su - Ceres. A wani taro na MAC a 2006, ta, tare da Pluto kuma da dama wasu abokai ba da matsayi na Dwarf duniya. Wadannan size Vesta, Pallas da Giga tare da Ceres dokoki 51% na jimlar nauyin da asteroid bel.

siffar

Cosmic jiki, da ke cikin bel, ban da girma har yanzu suna da wani yawan key halaye. Dukan su ne m abubuwa, ciniki a falakinsu a kusa da rana. Abun Lura na asteroids bayyana cewa, a matsayin mai mulkin, su ne sababbu a siffar da kuma juya. Images dauka ta hanyar da kumbon sama jannati, to tashi ta hanyar da asteroid bel a cikin hasken rana tsarin, sun tabbatar da wadannan zaton. Kamar yadda masu bincike, wannan tsari - da sakamakon m collisions asteroids tare da juna da kuma sauran abubuwa.

tsarin

Don kwanan wata, Taurari sun gano uku azuzuwan na asteroids bisa ga babban abubuwa a cikin abun da ke ciki:

• carbon (Class C).
• silicate (aji S) da predominance na silicon.
• karfe (M sa).

A farko lissafi ga kamar 75% na duk aka sani asteroids. Wannan rarrabuwa, duk da haka, wasu malamai ba su dauke m. A cikin view, da data kasance data ba a fili ce wadda kashi predominates a cosmic jikin na asteroid bel.

A 2010, wata tawagar Masana ilmin sanya wani ban sha'awa samu game da abun da ke ciki na asteroids. Masana kimiyya sun gano a farfajiya na Themis isasshe manyan abu na wannan yankin, ruwa kankara. A find tabbatar kaikaice da suke cewa daya daga cikin hanyoyin samun ruwa a kan matasa Duniya sun asteroids.

sauran Features

A talakawan kudi a da abubuwa kewayewa da rãnã da wannan yanki ne 20 km / s. A wannan yanayin, wanda juyin juya halin na babban asteroid bel ciyar uku zuwa tara Duniya shekaru. Domin mafi yawansu ba su halin da kadan mai karkata daga cikin sarari guda zuwa ecliptic jirgin sama - 5-10º. Duk da haka, akwai abubuwa wanda yanayin sa da duniya jirgin sama na juyawa a kusa da haske mafi m kwana na zuwa 70º. Wannan yanayin ya zama tushen ga rarrabuwa na asteroids cikin biyu subsystems: lebur kuma mai siffar zobe. A karkata daga falakinsu da abubuwa na farko da irin ne kasa fi ko daidai to 8º, na biyu - fiye da kayyade darajar.

fitowan

A cikin karni na sha tara da kimiyya al'umma an yadu tattauna jarrabawa game da marigayin Phaethon. A nesa daga Mars zuwa Jupiter quite ban sha'awa, kuma akwai iya wuce sararin samaniya na wani duniya. Duk da haka, irin wannan ideas yau an dauki rabu amfani. Modern Masana ilmin bi version cewa wuri, inda da bel na asteroids, duniya faruwa kawai iya ba. Dalilin wannan a Jupiter. A gas giant ne har yanzu a farkon matakai na da samuwar yana da wani gravitational sakamako a kan yankin, kwance kusa da rana. Ya janyo hankalin ɓangare na abu na wannan yankin. Bai kama da Jupiter jikin da aka watsar da su a daban-daban kwatance, protoasteroidov ƙara gudun, karuwar adadin collisions. A sakamakon haka, ba kawai don suna gina sama da taro da kuma girma, amma ko da samun karami. A cikin shakka daga irin canje da alama na taurari tsakanin Jupiter kuma Mars zama sifili.

m tasiri

Jupiter kuma a yau "ba ya bar shi kadai" da asteroid bel. Its iko nauyi sa canje-canje a cikin falakinsu da wasu daga cikin jikinsu. A karkashin tasirin da take da su ne ake kira ba-tafi a cikin yankunan da akwai kusan babu asteroids. Jikin tashi nan saboda wani karo da wani abu, aka tura daga cikin zone. Wani lokaci wannan sarari suKe an canza haka da cewa shi ya fita cikin asteroid bel.

ƙarin zobba

Babban asteroid bel ba kadai. A da m baki suna sanya biyu irin wannan tukuna kasa m ilimi. Daya daga wadannan zobba aka located kai tsaye a kan madawwama biyu na Jupiter da aka wakilta biyu kungiyoyin abubuwa:

• "Helenawa" gaba gas giant kamar 60º.
• "Trojans" bayan wannan yawan digiri.

A halayyar alama na waɗannan jikuna ne zaman lafiyar da su motsi. Yana yiwuwa saboda da wuri na asteroids a "Lagrange maki", wanda aka adalci da duk gravitational tasiri a kan wadannan abubuwa.

Duk da mun gwada kusa da kusanci zuwa ga Duniya, da asteroid bel ne arancinsu karatu da kuma riko da yawa asirai. A farko daga cikin wadannan, ba shakka, shi ne asalin kananan jikin na hasken rana tsarin. Akwai shawara a wannan batun, ko da yake sun sauti tabbatacce isa, mun ba tukuna samu bayyananne tabbatarwa.

Tãyar da tambayoyi da kuma wasu siffofin da tsarin asteroids. An sani, misali, cewa ko da bel abubuwa alaka a wasu madaidaci quite daban-daban daga juna. A binciken da na halaye na asteroids da su asalin wajibi ne duka biyu na fahimtar abubuwan da suka faru gabanin samuwar da hasken rana tsarin kamar yadda muka san shi, kuma domin gina theories game da tafiyar matakai abin da ke faruwa a cikin m sassa na halittu, a cikin tsarin da sauran taurari.