The distribution of the Neptune trojans and plutinos for reference.

The characteristics of an object represent:

• Distance along horizontal axis
  • the object's orbital semi-major axis a in Astronomical Units (in white)
  • the orbital period in years (in green)
• Angle - the object's orbital inclination i in degrees
• Size of the circle - the object’s size relative to others:
  • for a few large objects, the diameter drawn represents the best current estimates
  • for others, the diameter of the circle represents the absolute magnitude H 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.
• grey arcs mark the orbit of Neptune and the position of plutinos.

• Minor Planet Center Orbit database (MPCORB) as of 2008-10-05.
• Resonant orbits' classification from MPEC Circular 2008-S05 (2008-10-01).
• Trojans: MPEC List (2008-10-26).

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