File:TheKuiperBelt 55AU Classical.svg

[edit] Description in English

(voir plus loin pour la description en français)

Large classical objects of the Kuiper Belt (H<4.5).

[edit] 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.

[edit] Data source

Minor Planet Center Orbit database (MPCORB) as of 2008-10-05. 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.

[edit] Description en français

Les grands objets classiques. Graphe généré par un programme écrit par Eurocommuter.

[edit] 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.

[edit] Source des donnés

La base de donnés MPCORB au 14 Février 2006.

[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following licenses: Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. This licensing tag was added to this file as part of the GFDL licensing update.www.creativecommons.org/licenses/by-sa/3.0/CC-BY-SA-3.0Creative Commons Attribution-Share Alike 3.0 truetrue This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. www.creativecommons.org/licenses/by-sa/2.5-2.0-1.0 CC-BY-SA-2.5-2.0-1.0 Creative Commons Attribution-Share Alike 2.5-2.0-1.0 truetrue You may select the license of your choice.

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

	Date/Time	Thumbnail	Dimensions	User	Comment
current	11:00, 19 October 2008		800 × 400 (26 KB)	Eurocommuter	((aligned font with other graphs))
	10:54, 19 October 2008		800 × 400 (24 KB)	Eurocommuter	(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	(Data source update after a year.)
	12:12, 20 February 2006		800 × 400 (14 KB)	Eurocommuter	(Large Classical Objects. Update by Eurocommuter)
	11:28, 17 February 2006		800 × 400 (13 KB)	Eurocommuter	(Large classical objects of the Kuiper Belt. Generated by a program written by Eurocommuter.)

• Classical Kuiper belt object

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