Editing Classical Kuiper belt object (section)

=== Distribution ===
The vast majority of KBOs (more than two-thirds) have inclinations of less than 5° and eccentricities of less than 0.1&nbsp;. Their semi-major axes show a preference for the middle of the main belt; arguably, smaller objects close to the limiting resonances have been either captured into resonance or have their orbits modified by Neptune.

The 'hot' and 'cold' populations are strikingly different: more than 30% of all cubewanos are in low inclination, near-circular orbits. The parameters of the plutinos’ orbits are more evenly distributed, with a local maximum in moderate eccentricities in 0.15–0.2 range, and low inclinations 5–10°.
See also the comparison with [[scattered disk#Scattered objects versus classical objects|scattered disk objects]].

Cubewanos form a clear 'belt' outside Neptune's orbit, whereas the plutinos approach, or even cross Neptune's orbit. When orbital inclinations are compared, 'hot' cubewanos can be easily distinguished by their higher inclinations, as the plutinos typically keep orbits <20°. The high inclination of 'hot' cubewanos has not been explained.<ref>
{{cite web |last=Jewitt |first=D. |author-link=David Jewitt |year=2004 |title=Plutino |url=http://www.ifa.hawaii.edu/~jewitt/kb/plutino.html |url-status=dead |archive-url=https://web.archive.org/web/20070419234021/http://www.ifa.hawaii.edu/~jewitt/kb/plutino.html |archive-date=2007-04-19 |df=dmy-all}}</ref>

{{multiple image
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 |image1= KBOs and resonances.png
 |image2=TheKuiperBelt Projections 55AU Classical Plutinos.svg
 |footer=''Left:'' TNO distribution of cubewanos (blue), [[resonant trans-Neptunian object|resonant TNOs]] (red), [[Scattered disk object|SDO]]s (grey) and [[sednoid]]s (yellow). ''Right:'' Comparison of the aligned orbits (polar and ecliptic view) of cubewanos, plutinos, and Neptune (yellow).
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