Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Adrastea nwere ọdịdị na-adịghị mma ma tụọ 20×16×14 km n'obosara. A na-eme atụmatụ na mpaghara ala ga-adị n'agbata 840 na 1,600 (~1,200) km2. Nke a na-eme ka ọ bụrụ nke kasị nta n'ime ọnwa anọ ndị dị n'ime. A maghị oke, ihe mejupụtara ya na oke Adrastea, mana na-eche na nkezi njupụta ya dị ka nke Amalthea, ihe dịka 0.86 g/cm3, enwere ike ịtụle oke ya na ihe dịka 2 × 1015 kg. Amalthea's density implies that the moon is composed of water ice with a porosity of 10<unk>15%, and Adrastea may be similar. Enweghị nkọwa zuru ezu nke Adrastea, n'ihi obere mkpebi nke ihe oyiyi dịnụ.  Ajụjụ: kedu ihe a ga-eme?
n'agbata 840 na 1,600