Summary

Scattered Disk Objects (up to 100 AU). Kuiper Belt shown in grey, resonant objects within the Scattered Disk shown in green.

The position of an object represents

• its orbit’s semi-major axis a in AU and the orbital period in years (horizontal axis)
• its orbit’s inclination i in degrees (vertical axis).

The size of the circle illustrates the object’s size relative to others. For a few large objects, the diameter drawn represents the best current estimates. For all others, the circles represent the absolute magnitude of the object. The eccentricity of the orbit is shown indirectly by a segment extending from the left (perihelion) to the aphelion to the right. In other words, the segment illustrates the variations of the object's distance from the Sun. Objects with nearly circular orbits will show short segments while highly elliptical orbits will be represented by long segments.

Main resonances with Neptune are marked with vertical bars; 1:1 marks the position of Neptune’s orbit (and its Trojan asteroids), 2:3 marks the orbit of Pluto (and plutinos) etc.

Data source

Minor Planet Center Orbit database (MPCORB) as of 2008-10-05. Orbits' classification from MPEC Circular 2008-S05 (2008-10-01) or from MPCORB. Diameter estimates include Stansberry et al. (Spitzer). See refs in the related articles.

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