cis-Neptunian

Etymology
From ; compare.

Adjective

 * 1)  Relating to an astronomical body found within the orbit of Neptune.

Usage notes

 * The definition is somewhat vague: an object whose orbit is only partly inside that of Neptune might be neither cis-Neptunian nor trans-Neptunian – or perhaps both.
 * The term is usually only applied to small Solar System bodies that directly orbit the Sun. It also may be stipulated that the orbit be beyond that of Jupiter.
 * Neptunian trojans, which share Neptune's orbit, may or may not be included.