Scattered disc

Scattered Disk Objects ( SDOs also Scattered Kuiper Belt Objects, SKBOs, literally scattered Kuiper Belt objects ) are highly eccentric trans-Neptunian Kuiper Belt objects of our planetary system. That is, their orbital radii extending outside the orbit of the planet Neptune, and their trajectories have about 0.3 to about 0.99 significantly to extremely elliptical shape with a numerical eccentricity of a rule on. The name Scattered Objects (Eng. " scattered objects") refers to its putative mode of origin.

Formation

Scattered disc objects are accessed, created as all the Kuiper Belt objects beyond the orbit of Neptune in the planetary aggregation disk of our solar system and initially had more or less circular orbits, but over time under the influence of gravity of the giant planets, Jupiter, Saturn, Uranus and Neptune, were gradually eccentric. Because this process depends on the particular planet / object constellations, so that was accompanied by a scattered distribution of object paths, from which the name for these objects.

Known representatives

The largest known SDO is the dwarf planet Eris. The object has a moon, and is currently located at a distance of 97 AU ( 14.6 billion kilometers ). Eris moving on a highly eccentric and inclined path that leads them into a Apheldistanz of nearly 100 AU.

In another representative of the SDOs, the asteroid 2000 OO67, the orbit is so eccentric that its perihelion within the orbit of Neptune and its aphelion in about 1000 AU from the Sun.

Other well-known SDOs: