<prompt> 90377 Sedna ipuraneti duku guru riri kumucheto kweSolar System iyo, kubva muna 2015, iri kure nematanho e86 astronomical units 1.29×10 km; 8.0×109 mi kubva kuZuva, inenge katatu kupfuura Neptune. Spectroscopy yakaratidza kuti Sednas surface composition yakafanana neyevamwe trans-Neptunian zvinhu, kunyanya musanganiswa wemvura, methane, uye nitrogen ice ne tholins. Pamusoro payo ndeimwe yezvitsvuku pakati peSolar System zvinhu. Inogona kunge iri nyika yeNeptune. Pakati pezvinhu zvisere zvakakura zve trans-Neptunian, Sedna ndiyo chete isingazivikanwe kuti ine mwedzi. Kune vakawanda vayo, iri kure kure kure kupfuura Zuva parizvino, ine aphelion yayo pa 937 AU.  <response>: tsvuku 