(90377 Sedna, 2003 VB12)
(distant solar system planetoid discovered in 2003)
90377 Sedna (or Sedna or 2003 VB12,
is an extreme Kuiper Belt object (a KBO with
high eccentricity and orbital inclination)
with an aphelion on the order of 880 AU
(17 times that of Pluto),
currently about 85 AU distant.
At the time of discovery, it was the most distant
solar system object under observation.
The orbital inclination needs explanation and is
key to current theories about the existence
and orbit of a Planet Nine.
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Referenced by pages:
Kuiper Belt (K Belt)
trans-Neptunian object (TNO)