Astrophysics (Index)About

Sedna

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

90377 Sedna (or Sedna or 2003 VB12, its provisional designation) is an extreme Kuiper Belt object (a KBO with high eccentricity and orbital inclination) with an aphelion of 937 AU (18 times that of Pluto), and a perihelion of 76 AU. It is currently approaching us, at about 84 AU, due to reach its perihelion in 2076. At the time of discovery, it was the most distant solar system object under observation. Some current theories regarding a Planet Nine aim to explain the orbital inclination of Sedna and similar objects.


(minor planet,KBO,TNO,eccentricity)
Further reading:
https://en.wikipedia.org/wiki/90377_Sedna
https://minorplanetcenter.net/db_search/show_object?object_id=SEDNA
https://web.gps.caltech.edu/~mbrown/sedna/
https://science.nasa.gov/science-news/science-at-nasa/2004/16mar_sedna
https://www.jpl.nasa.gov/images/pia05568-sedna-discovery-image
https://ui.adsabs.harvard.edu/abs/2004ApJ...617..645B/abstract
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
~075AU~0lynearestSedna
~00.01pc0.01lyfurthestSedna

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

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