दीर्घ वृत्तीय कक्षा
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dirgh vrittiy kaksha prithvi se 39.500 ki.mi. ki ooanchaee par sthit hai. uttar se dakshin ki or prakshepit upagrah, sanchar vyavastha ko donoan dhruvoan ko dene ke lie phir is kaksha mean prakshepit kie jate haian. isake dvara dhruvoan par apabhoo hone ke karan rat-din sanchar vyavastha sthapit ho jati hai. is kaksha mean sthapit ek matr upagrah 'molaniya' hai.
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