File:KBOs and resonances.png

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DescriptionKBOs and resonances.png	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 assumed albedo, based on the object's classification (see Johnston's page for details). 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 [1] (2023-07-23).
Date	31 July 2023
Source	Own work
Author	Renerpho
Other versions	File:KBO_diagram_eccentricity.png

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File history

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	Date/Time	Dimensions	User	Comment
current	09:35, 31 July 2023	13,860 × 6,044 (920 KB)	Renerpho	New selection of highlighted objects; repair horizontal scale
	11:43, 28 July 2023	13,860 × 6,044 (923 KB)	Renerpho	Adding 1012 objects (+28%), bringing total count to 4576. Source: Johnston's archive as of 2023-07-23. TNOs that were defined as cubewanos before keep their classification in the chart, regardless of changes made by Johnston since the last update in 2019.
	05:56, 20 February 2020	13,860 × 6,044 (903 KB)	Renerpho	Add 136 new objects (+4%), and remove 96 objects with bad orbits (-3%). Source: Johnston's archive as of 2019-12-27, and MPECs 2020 A128, B289, B309, C51, C71-73, C78-88.
	12:36, 7 November 2019	13,860 × 6,044 (898 KB)	Renerpho	Add 180 objects (+5%), bringing total count to 3524. Slight format changes. Source: Johnston's archive as of 2019-07-13.
	01:41, 2 May 2019	13,860 × 6,044 (889 KB)	Renerpho	Correct formatting mistake ("orbital period" axis wasn't shown)
	01:31, 2 May 2019	13,860 × 6,044 (991 KB)	Renerpho	Add 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 2018	13,860 × 6,044 (899 KB)	Renerpho	2,968 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 2018	13,752 × 6,080 (871 KB)	Renerpho	Updated 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 2018	13,752 × 6,080 (864 KB)	Renerpho	Added >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 2018	13,752 × 6,080 (892 KB)	Renerpho	Update includes objects&orbits up to 2018-02-20