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A Dynamical Survey of the Trans-Neptunian Region. I. Mean-motion Resonances with Neptune

Forgács-Dajka, E. et al. (2023)

Published
May 1, 2023
DOI
10.3847/1538-4365/acc4c8
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At a GlanceAI

Integrates 4121 TNOs to identify their mean-motion resonances with Neptune and maps the resonant structure of 34-80 au.

SummaryAI

The authors integrate 4121 TNOs for 10^8 yr and identify their resonances with their own FAIR method, which also catches inclination-type and high-order resonances, separating permanently locked objects from temporarily captured ones. Dynamical maps built from test particles show the fine structure of the 34-80 au region: regular zones line up with the positions of real TNOs, underlining that resonances stabilize this region.

Method SnapshotAI

Long-term numerical integrations, semi-automatic resonance identification (FAIR), dynamical maps.

BackgroundAI

Mean-motion resonances, resonant angles, chaos indicators and dynamical maps.

In Collections

Astronomy33 papers

The trans-Neptunian region: surveys, populations and dynamics

The region beyond Neptune holds leftovers of planet formation, and its orbital structure is a record of how the giant planets migrated. This collection goes from the systematic surveys that built the modern census (Deep Ecliptic Survey, CFEPS, OSSOS, the Dark Energy Survey search) through dynamical classification of thousands of objects and population estimates for Neptune's resonances, to resonance sticking, the scattered disk, the coupling between Kozai (ZLK) dynamics and mean-motion resonances, and the distant clustered orbits. It ends with what the next surveys (DEEP, CLASSY, LSST) are designed to answer. Terms: * TNO: trans-Neptunian object * MMR: mean-motion resonance * ZLK(R): von Zeipel-Lidov-Kozai (resonance) * DES: two different projects share this acronym here, the Deep Ecliptic Survey (2002, 2005) and the Dark Energy Survey (2022)

ES
Evgeny Smirnov

Mass search for low-order two-body resonances among TNOs (with the FAIR method, which is not always accurate) + maps of resonant regions. Quite interesting.

— ES