A region of space between 30 and 50 Astronomical Units from the sun, roughly confined within a thick band around the ecliptic. This area is populated by many thousands of trans-Neptunian objects
or Edgeworth-Kuiper belt Disk-shaped belt of billions of small, icy bodies orbiting the Sun beyond the orbit of Neptune, mostly at distances 30-50 times Earth's distance from the Sun. Gerard Peter Kuiper (1905-73) proposed the existence of this large flattened distribution of objects in 1951 in connection with his theory of the origin of the solar system (see solar nebula). Kenneth Edgeworth (1880-1972) independently had made similar proposals in 1943 and 1949. Whether the belt extends thinly as far as the Oort cloud is not known. Gravitational disturbances by Neptune of objects in the belt are thought to be the origin of most short-period comets. The first Kuiper belt object was discovered in 1992, although the orbit, icy composition, and diminutive size of Pluto appear to qualify this body, traditionally considered a planet, as a giant Kuiper belt object
A type of trans-Neptunian object (TNO) (a certain type of minor planet) that has an orbit in the Kuiper belt (between 30-50 AU) with inclinations consistent with the ecliptic