
adrastia (chandra)

audrastia (), jyala antaranusar dusare aanee jupiterchya chaar aateel chandranpaiki sarvat lahan mhanoon dekhil olakhale jaate. 1979 madhye 'voyager 2' neey ghetalelya chhayachitranmadhye tyacha shodh lagla, jyamule durbiniaivaji aantargrahiy antaral yanane ghetalelya chhayachitranmadhun sapadalela too pahila naisargik upgrah tharala. roman dev jupiterchya samatulya asalelya greek dev ziyasachi palak aaee, pauranik audrastiachya navavarun yala adhikrutpane naav denyat aale.
saurmaletil mojkya chandranpaiki eka asalelya adrastia haah tyaa grahachya divasachya kalavadhipeksha qamee kalavadhit tyachya grahabhovati pradakshina ghalanyasathi olakhala jaato. too jupitarchya mukhya ringchya kathavar pradakshina ghalato aanee jupitarchya ringjamadhye samagricha mukhya yogdan denara manla jaato. 1990 chya dashakat 'galileo' antaral yanane nirikshan karoonahi, chandrachya aakaravyatirikt itar bhautik vaishishtyambaddal aanee too jupiterla bharatine bund aahe yaa vastusthitibaddal farach qamee mahitee aahe.
shodh aanee nirikshane.
adrastiacha shodh david see. yanni lavala. juit aanee jee. edward danielsonne 8 julai 1979 roji ghetalelya 'voyager 2' tapas chhayachitranmadhye, aanee tyala heey padd midale. jaree too keval eka bindu mhanoon disala asala taree aantargrahiy antaral yanane shodhalela haah pahila chandra hota. tyacha shodh laglyanantar lagechach, kahee mahinyanpurvi 'voyager 1' neey ghetalelya chhayachitranmadhye jupiterche itar done aateel chandra (thebe aanee mettis) disun aale. 1998 madhye 'galileo' antaral yaan chandrachya aakarache nirdharan karoo shakale, parantu pratima kharab aahet. 1983 madhye, zius aanee tyacha priyakar ananke yanchi mulgi, greek apsara adrastia hichya navavarun adrastiache adhikrut naav thevanyat aale.
2016 madhye jupitervar aalelya 'jueno' orbitermadhye geunocam navacha camera asala taree too jawaljawal purnapane jupiterchya nirikshananvar kendrit aahe. tathapi, jarr serve kahee theek rahile tarr teey chandrachya mettis aanee audrastiachya kahee maryadit pratima tipanyas saksham asale pahije.
sharirik vaishishtye.
audrastiacha aakar aniyamit asato aanee too 20x16x14 kiimii rund asato. prushthbhagache kshetrafal 840 teey 1,600 (~ 1,200) chauras kimichya darmyan asel. yamule teey chaar aateel chandranpaiki sarvat lahan aahe. audrastiacha motha bhag, rachana aanee vastuman mahit nahee, parantu tyachi sarasari ghanata amalthiyasarkhi aahe asey gruheet dharoon, sumare 0.86 gramm/seey. mea. 3, tyache vastuman sumare 2 kilo asalyacha andaj lavala jaau shakato. amalthiyachi ghanata soochit karate qee chandra 10-15% chya chhidralutasaha panyachya barfane banalela aahe aanee audrastia samaan asoo shakato.
upalabdh pratimanche qamee resolution asalyamule audrastiache prushthbhagache tapasheel dnyat naheet.
kakshet.
audrastia haah jovian upgrah kutumbatil sarvat lahan aanee dusya kramankacha sarvat jawalcha sadasya aahe. teey grahachya mukhya vartulachya bahereel kathavar sumare (1.806 jupiter trijya) trijyevar jupitarbhovati pradakshina ghalate. kakshet atishay qamee utkendrata aanee zoke aahe-anukrame 0.0015 aanee 0.03° chya aaspas. zep hii jupitarchya vishuvavruttashi sambandhit aahe.
bharatichya bund padalyamule, audrastia tyachya kakshiy kalavadhisah samkramitpane firate, jyamule eka chehara nehmi grahakade pahato. tyacha lamb aksh jupiterchya dishene sanrekhit aahe, hii sarvat qamee urja sanrachana aahe.
addrastiachi kaksha jupiterchya samkramit kaksha trijyechya aat asate (metispramanech) aanee parinami, bharatichya shaktinmule haloohaloo tyachi kaksha kshay hott aahe jenekarun tee eka divas jupitervar parinam karel. jarr tyachi ghanata amalthia sarkhi asel tarr tyachi kaksha pratyakshat drav roche maryadet asel. tathapi, teey tutat naslyamule, teey ajunahi tyachya kathor roche maryadechya baher asale pahije.
adrastia haah jupiterchya chandranpaiki dusra sarvat vegane firnara chandra aahe, jyacha kakshiy veg 31.378 kiimii/seey aahe.
jupiterchya angathyanshi sambandh.
jupitarchya ringjamadhil samgrimadhye adrastia haah sarvat motha yogdan denara aahe. yaat pramukhyane ulkapindachya prabhavamule jupiterchya chaar lahan aateel upgrahanchya prushthbhagavarun baher padnari samagri asalyache disate. yaa upgrahanmadhun baher padnara prabhav antaralat gamavane sope aahe. yache kaaran mhanje upgrahanchi qamee ghanata aanee tyanche prushthbhag tyanchya dongral kshetrachya kathajaval padalele aahet.
asey disate qee audrastia haah yaa ring samagricha sarvat vipul srot aahe, jyacha purava sarvat daat ring (mukhya ring) adrastiachya kakshet aanee tyachya aat sthit aahe. adhik tantotantpane, audrastiachi kaksha jupitarchya mukhya ringchya bahya kathajaval aahe. drishyaman ring samagrichi achook vyapti pratimanchya fages konavar avalambun asateh pudhe vikhuralelya prakashat audrastia mukhya ringchya baher ghattapane asato, parantu mage vikhuralelya prakashat (jeey barech mothe kann ughad karate) audrastiachya kakshachya baher eka arund ringlet dekhil disate.
sandarbh.
uddhrut srot