<Dd> Makemake (45.79 AU average), although smaller than Pluto, is the largest known object in the classical Kuiper belt (that is, a Kuiper belt object not in a confirmed resonance with Neptune). Makemake is the brightest object in the Kuiper belt after Pluto . It was named and designated a dwarf planet in 2008 . Its orbit is far more inclined than Pluto's, at 29 ° . </Dd> <Dl> <Dd> Haumea (43.13 AU average) is in an orbit similar to Makemake except that it is in a 7: 12 orbital resonance with Neptune . It is about the same size as Makemake and has two natural satellites . A rapid, 3.9 - hour rotation gives it a flattened and elongated shape . It was named and designated a dwarf planet in 2008 . </Dd> </Dl> <Dd> Haumea (43.13 AU average) is in an orbit similar to Makemake except that it is in a 7: 12 orbital resonance with Neptune . It is about the same size as Makemake and has two natural satellites . A rapid, 3.9 - hour rotation gives it a flattened and elongated shape . It was named and designated a dwarf planet in 2008 . </Dd> <P> The scattered disc, which overlaps the Kuiper belt but extends much further outwards, is thought to be the source of short - period comets . Scattered - disc objects are thought to have been ejected into erratic orbits by the gravitational influence of Neptune's early outward migration . Most scattered disc objects (SDOs) have perihelia within the Kuiper belt but aphelia far beyond it (some more than 150 AU from the Sun). SDOs' orbits are also highly inclined to the ecliptic plane and are often almost perpendicular to it . Some astronomers consider the scattered disc to be merely another region of the Kuiper belt and describe scattered disc objects as "scattered Kuiper belt objects". Some astronomers also classify centaurs as inward - scattered Kuiper belt objects along with the outward - scattered residents of the scattered disc . </P>

Which is not part of inner solar system