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'''Sedna''' is 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''' is 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]].
[[category:astronomy]]
[[category:astronomy]]