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单词 Sedna
释义 Noun: Sedna
  1. A planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003; the most distant object known to orbit around the sun

Type of: minor planet, planetoid

Encyclopedia: Sedna Sedna, Trans-Neptunian object 2003 VB12

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更新时间:2024/12/21 13:23:51