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90377 Sedna
90377 Sedna
/naɪn oʊ ˈθri sevən seˈdnɑ/
noun
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
(
Sedna
,
90377 Sedna
)
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
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