The position of an object represents

• its orbit’s semi-major axis a in AU (horizontal axis)
• 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.

• vertical axis: orbit’s inclination i in degrees, 5^o intervals
• horizontal axis: orbit’s eccentricity e; 0.05 intervals
• each small square represents a given range for both the eccentricity e and the inclination i.

As near circular orbits occupy the first column (e<0.05) and the orbits with the lowest inclination i <5% occupy the lowest row, the square in the bottom left corner represents the number of near circular, very lowly inclined orbits.

• the relative population is represented with ‘cartographic’ colours: (from small numbers plotted as green ‘valleys’ to brown 'peaks'. Colors labeled in %.
• a grey square represents a single object (an outlier) in this range.

Image:theKuiperBelt_100AU_SDO.svg has the same scale and objects, but shows individual eccentricities.

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