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File:TheKuiperBelt 55AU Classical.svg

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Summary

Description
English: Large classical Kuiper Belt objects (H<4.5).
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.
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

 
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Author Eurocommuter~commonswiki
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Captions

Large classical Kuiper Belt objects

Items portrayed in this file

depicts

File history

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

Date/TimeThumbnailDimensionsUserComment
current11:00, 19 October 2008Thumbnail for version as of 11:00, 19 October 2008800 × 400 (26 KB)Eurocommuter~commonswiki(aligned font with other graphs)
10:54, 19 October 2008Thumbnail for version as of 10:54, 19 October 2008800 × 400 (24 KB)Eurocommuter~commonswikiRe-plotted from updated MPC database
17:50, 23 September 2008Thumbnail for version as of 17:50, 23 September 2008800 × 400 (14 KB)Chesnok2003 EL61 = Haumea, 2005 FY9 = Makemake
22:02, 22 March 2007Thumbnail for version as of 22:02, 22 March 2007800 × 400 (15 KB)Eurocommuter~commonswikiData source update after a year.
12:12, 20 February 2006Thumbnail for version as of 12:12, 20 February 2006800 × 400 (14 KB)Eurocommuter~commonswikiLarge Classical Objects. Update by Eurocommuter
11:28, 17 February 2006Thumbnail for version as of 11:28, 17 February 2006800 × 400 (13 KB)Eurocommuter~commonswikiLarge classical objects of the Kuiper Belt. Generated by a program written by Eurocommuter.

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