Astrophysics (Index)About


(90377 Sedna, 2003 VB12)
(distant solar system planetoid discovered in 2003)

90377 Sedna (or Sedna or 2003 VB12, provisional designation) 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.

(minor planet,KBO,TNO,eccentricity)
Further reading:
/Lookback Years

Referenced by pages:
Kuiper Belt (K Belt)
trans-Neptunian object (TNO)