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English: Distribution of Kuiper belt objects' orbits.

Objects in resonance are plotted in red (Neptune trojans 1:1, plutinos 2:3, twotinos 1:2,…). Classical objects are plotted in blue. Scattered disk objects (not members of the Kuiper Belt) are shown in grey, Sednoids in yellow, extreme detached disk objects in orange, extended scattered disk objects in magenta, centaurs in green, and other trans-Neptunian objects in dark yellow.

Generated by Renerpho.

Main graph

The position of an object represents

  • its orbit’s semi-major axis a in AU and orbital period P in years (horizontal axis, logarithmic scale)
  • 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 actual measurements. For all others, the circles represent the diameter corresponding to the absolute magnitude and an albedo of 0.09 (mean value for medium sized KBOs).

Main resonances with Neptune are marked with vertical red bars; 1:1 marks the position of Neptune’s orbit (and its Trojan asteroids), 2:3 marks the orbit of Pluto (and the other Plutinos) etc.

Data source

JPL Small-Body Database as of 2019-05-01. Resonant orbits' classification and diameter estimates from [1] (2018-10-07).
Source Own work
Author Renerpho


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File history

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

current01:41, 2 May 2019Thumbnail for version as of 01:41, 2 May 201913,860 × 6,044 (889 KB)RenerphoCorrect formatting mistake ("orbital period" axis wasn't shown)
01:31, 2 May 2019Thumbnail for version as of 01:31, 2 May 201913,860 × 6,044 (991 KB)RenerphoAdd 376 objects (+13%), bringing total count to 3344. Slight format changes, correct spelling mistakes. Sources: JPL database as of 2019-05-01, and Johnston's archive (as of 2018-10-07).
18:00, 15 October 2018Thumbnail for version as of 18:00, 15 October 201813,860 × 6,044 (899 KB)Renerpho2,968 objects (removed some unreliable objects and duplicates, added centaurs, and added some new discoveries like 2015 TG387). Different colours for scattered disk, extreme scattered disk and extreme detached (the objects relevant for the "Planet X hypothesis").
23:59, 4 June 2018Thumbnail for version as of 23:59, 4 June 201813,752 × 6,080 (871 KB)RenerphoUpdated previously observed objects that were observed/improved by OSSOS, including a few new resonances. Bringing total count to 3122 (+9%). Minor design changes.
18:50, 4 June 2018Thumbnail for version as of 18:50, 4 June 201813,752 × 6,080 (864 KB)RenerphoAdded >800 new objects, mostly from OSSOS (https://arxiv.org/abs/1805.11740). List from http://johnstonsarchive.net/ up to 22 April 2018; a handful of later discoveries with secure orbits have been added manually. Population increases from 2142 to 2864 (+33%). Many new high-order resonances.
11:45, 21 February 2018Thumbnail for version as of 11:45, 21 February 201813,752 × 6,080 (892 KB)RenerphoUpdate includes objects&orbits up to 2018-02-20
16:29, 1 May 2017Thumbnail for version as of 16:29, 1 May 20179,544 × 3,696 (1.1 MB)Jeanjung212Lossless Compressed/optimized png decreasing file size by 546145 bytes
23:46, 4 September 2016Thumbnail for version as of 23:46, 4 September 20169,544 × 3,696 (1.62 MB)RenerphoUser created page with UploadWizard
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