Cis-Neptunian object

A cis-Neptunian object is, literally, any astronomical body found within the orbit of Neptune.[1] However, the term is typically used for those distant minor planets other than trans-Neptunian objects: that is, all sub-planetary bodies orbiting the Sun at or within the distance of Neptune, but outside the orbit of Jupiter. This includes the icy minor planets known as centaurs[2] and the Neptune trojans.[3][lower-alpha 1]



  1. Remo, John L. (2007). "Classifying Solid Planetary Bodies". AIP Conference Proceedings. 886: 284–302. doi:10.1063/1.2710063.
  2. J Horner; NW Evans; ME Bailey; DJ Asher (2003). "The Populations of Comet-like Bodies in the Solar System" (PDF). Archived from the original (PDF) on 2013-06-01. Retrieved 2007-06-29.
  3. "List Of Neptune Trojans". Minor Planet Center. Archived from the original on 2012-05-25. Retrieved 2010-10-27.
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