File:TheKuiperBelt 55AU Classical.svg

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DescriptionTheKuiperBelt 55AU Classical.svg	English: Large classical Kuiper Belt objects (H<4.5). classical KBO Plutinos, Neptune trojans and other resonant trans-Neptunian objects Main graph 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. The absolute magnitude values (H) marked at the bottom of the plot are defined as the optical visual magnitude that an object would have if it were located at a distance of 1 astronomical unit from the Sun and viewed from a distance of 1 astronomical unit at a phase of 0 degrees. It should not be confused with the definition of absolute magnitudes used for stars or the infrared photometry H-band. Français : Les grands objets classiques. cubewanos plutinos, astéroïdes troyens de Neptune e des autres objets en résonance avec Neptune Graphe principal La position d’un objet représente le demi axe majeur (rayon moyen) de son orbite a en au (unité astronomique, l'axe horizontal) l’inclination de son orbite i en degrés (axe vertical). Le diamètre du cercle montre la taille relative de l’objet aux autres. Pour quelques grands objets, le diamètre représente la meilleure estimation connue. Pour tous les autres, le diamètre du cercle représente la magnitude absolue de l’objet. L’excentricité de l’orbite est représentée indirectement par un segment qui s’étend du périhélie à gauche) l’aphélie à droite. En d’autres termes, le segment illustre les variations de la distance du Soleil. Les objets avec des orbites quasi circulaires ont donc des courts segments et les orbites très excentriques sont repérées par des segments longs. Les positions des résonances avec Neptune sont marqués par des traits verticaux; 1:1 marque a position de l’orbite de Neptune (et ses Troyens), 2:3 marque l’orbite de Pluton (et ses lunes) etc.
Date	2006-02-17; updated 2007-03-22, 2008-10-19
Source	Minor Planet Center Orbit database (MPCORB) as of 2008-10-05. (La base de donnés MPCORB au 14 Février 2006.) 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. Plotted by a program written by the author W3C-validity not checked.
Author	Eurocommuter~commonswiki
Permission (Reusing this file)	see Licence tag
Other versions	[edit] English Macedonian Polish Russian

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File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	11:00, 19 October 2008	800 × 400 (26 KB)	Eurocommuter~commonswiki	(aligned font with other graphs)
	10:54, 19 October 2008	800 × 400 (24 KB)	Eurocommuter~commonswiki	Re-plotted from updated MPC database
	17:50, 23 September 2008	800 × 400 (14 KB)	Chesnok	2003 EL61 = Haumea, 2005 FY9 = Makemake
	22:02, 22 March 2007	800 × 400 (15 KB)	Eurocommuter~commonswiki	Data source update after a year.
	12:12, 20 February 2006	800 × 400 (14 KB)	Eurocommuter~commonswiki	Large Classical Objects. Update by Eurocommuter
	11:28, 17 February 2006	800 × 400 (13 KB)	Eurocommuter~commonswiki	Large classical objects of the Kuiper Belt. Generated by a program written by Eurocommuter.