Cubewanos and plutinos: orbit distribution. Generated by a program written by Eurocommuter.

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. 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 its moons) etc.

Histograms show the population of objects with the parameter (eccentricity e and inclination i respectively) inside the given interval.¹ The population is expressed in % of the total population (vertical axis)

• for inclination, the interval is 5^o, i.e. the first bar shows the relative population of objects with i in 0-5^o range, the next in 5-10^o range etc.
• for the eccentricity e, the interval is 0.1, i.e. the first bar shows the relative population of objects with e in 0-0.1 range (quite circular orbits)
• for semi-major axis a, the interval is 2AU i.e. the first bar shows the relative population of objects with e in 10-12AU range.

• 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.²

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'.³ Colors labeled in %.
• a grey square represents a single object (an outlier) in this range.

¹Distribution of plutinos is plotted but excluded from the cubewanos’ histograms.
²As near-circular orbits occupy the first column (e<0.05) and the orbits with the lowest inclination (i<5 degrees) occupy the lowest row, the square in the bottom left corner represents the 'cold population' of near circular, very lowly inclined orbits.
³A grey square represents a single object (an outlier) in this range.

Minor Planet Center Orbit database (MPCORB) as of 2007-03-7. Resonant orbits' classification from MPC Circular 2006-X45 (2006-12-21).

我，本作品的著作權持有者，決定用以下授權條款發佈本作品：

已授權您依據自由軟體基金會發行的無固定段落、封面文字和封底文字GNU自由文件授權條款1.2版或任意後續版本，對本檔進行複製、傳播和／或修改。該協議的副本列在GNU自由文件授權條款中。http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	此檔案採用共享創意 姓名標示-相同方式分享 3.0 未在地化版本授權條款。
	您可以自由： 分享 – 複製、發佈和傳播本作品 重新修改 – 創作演繹作品 惟需遵照下列條件： 姓名標示 – 您必須指名出正確的製作者，和提供授權條款的連結，以及表示是否有對內容上做出變更。您可以用任何合理的方式來行動，但不得以任何方式表明授權條款是對您許可或是由您所使用。 相同方式分享 – 如果您利用本素材進行再混合、轉換或創作，您必須基於如同原先的相同或兼容的條款，來分布您的貢獻成品。
	已新增授權條款標題至此檔案，作為GFDL授權更新的一部份。http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

此檔案採用創用CC 姓名標示-相同方式分享 2.5 通用版、2.0 通用版以及1.0 通用版授權條款。

您可以自由：

• 分享 – 複製、發佈和傳播本作品
• 重新修改 – 創作演繹作品

惟需遵照下列條件：

• 姓名標示 – 您必須指名出正確的製作者，和提供授權條款的連結，以及表示是否有對內容上做出變更。您可以用任何合理的方式來行動，但不得以任何方式表明授權條款是對您許可或是由您所使用。
• 相同方式分享 – 如果您利用本素材進行再混合、轉換或創作，您必須基於如同原先的相同或兼容的條款，來分布您的貢獻成品。

https://creativecommons.org/licenses/by-sa/2.5CC BY-SA 2.5 Creative Commons Attribution-Share Alike 2.5 truetrue

您可以選擇您需要的授權條款。