J/ApJS/266/5 TNOs mean-motion resonances with Neptune (Forgacs-Dajka+, 2023)
A dynamical survey of the trans-Neptunian region.
I. Mean-motion resonances with Neptune.
Forgacs-Dajka E., Kovari E., Kovacs T., Kiss C., Sandor Z.
<Astrophys. J. Suppl. Ser., 266, 5 (2023)>
=2023ApJS..266....5F 2023ApJS..266....5F
ADC_Keywords: Solar system ; Minor planets
Keywords: Resonant Kuiper belt objects ; N-body problem
Abstract:
In this paper, we present a large-scale dynamical survey of the trans-
Neptunian region, with particular attention to mean-motion resonances
(MMRs). We study a set of 4121 trans-Neptunian objects (TNOs), a
sample far larger than in previous works. We perform direct long-term
numerical integrations that enable us to examine the overall dynamics
of the individual TNOs as well as to identify all MMRs. For the latter
purpose, we apply an own-developed FAIR method that allows the
semi-automatic identification of even very high-order MMRs. Apart from
searching for the more frequent eccentricity-type resonances that
previous studies concentrated on, we set our method to allow the
identification of inclination-type MMRs, too. Furthermore, we
distinguish between TNOs that are locked in a given MMR throughout the
whole integration time span (108yr) and those that are only
temporarily captured in resonances. For a more detailed dynamical
analysis of the trans-Neptunian space, we also construct dynamical
maps using test particles. Observing the fine structure of the 34-80au
region underlines the stabilizing role of the MMRs, with the regular
regions coinciding with the positions of real TNOs.
Description:
We used NASA's JPL Horizons database to identify and collect all the
trans-Neptunian objects (TNOs; satisfying the definition "small bodies
with a semimajor axis a>30.1au"), and also to obtain the coordinates
and velocities of these objects. Our sample includes 4121 objects in
total.
The FAst Identification of mean motion Resonances (FAIR) method is a
recent and efficient method to identify quickly bodies involved in
MMRs and is applicable both in the case of the solar system and
exoplanetary systems (Forgacs-Dajka+ 2018MNRAS.477.3383F 2018MNRAS.477.3383F).
See Section 2.2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 43 1338 Summary of the resonant properties of
trans-Neptunian objects
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See also:
B/astorb : Orbits of Minor Planets (Bowell+ 2014)
J/AJ/156/33 : Resonance sticking in population of scattering TNOs (Yu+, 2018)
http://ssd.jpl.nasa.gov/horizons/ : JPL Horizons on-line solar system data
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Provisional Designation (1)
12- 16 A5 --- MMR Ratio of the mean-motion resonance (MMR)
18- 26 A9 --- Type Type of the mean-motion resonance (2)
28- 40 A13 deg Amp1 Amplitude of libration (3)
42- 43 I2 --- OCC [1/9]? JPL Orbit Condition Code
(0: best orbit quality; 9:poorest) (4)
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Note (1): Note that Neptune trojans are not included.
Note (2): Type of the MMR:
e = eccentricity-type;
I = inclination- type;
LT = long-term;
ST = short-term.
Note (3): Amplitudes given based upon the MMR type, separated a slash when
both eccentricity- and inclination-type MMRs are given in Column 3.
The value "-" is used when no amplitude is given.
Note (4): The Orbit Condition Code is an integer between 0 and 9
indicating on a logarithmic scale how well an object's orbit is
known. 0 represents the best and 9 the poorest orbit quality.
TNOs with an OCC>5 are generally considered "lost" for the
purposes of locating them again in the sky at future apparitions.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 24-Jul-2023