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The stability of Trojan type orbits around Neptune is studied. As the first part of our investigation, we present in this paper a global view of the stability of Trojans on inclined orbits. Using the frequency analysis method based on the…

Earth and Planetary Astrophysics · Physics 2015-05-13 Li-Yong Zhou , Rudolf Dvorak , Yi-Sui Sun

The dynamics of artificial asteroids on the Trojan-like orbits around Neptune is investigated in this paper. We describe the dependence of the orbital stability on the initial semimajor axis a and inclination i by constructing a dynamical…

Astrophysics · Physics 2008-11-18 Li-Yong Zhou , Rudolf Dvorak , Yi-Sui Sun

We aim to locate the stability region for Uranus Trojans (UT hereafter) and find out the dynamical mechanisms responsible for the structures in the phase space. Using the spectral number as the stability indicator, we construct the…

Earth and Planetary Astrophysics · Physics 2020-02-04 Lei Zhou , Li-Yong Zhou , Rudolf Dvorak , Jian Li

The only discovery of Earth Trojan 2010 TK$_7$ and the subsequent launch of OSIRIS-REx motive us to investigate the stability around the triangular Lagrange points $L_4$ and $L_5$ of the Earth. In this paper we present detailed dynamical…

Earth and Planetary Astrophysics · Physics 2019-02-06 Lei Zhou , Yang-Bo Xu , Li-Yong Zhou , Rudolf Dvorak , Jian Li

The minor planets on orbits that are dynamically stable in Neptune's 1:1 resonance on Gyr timescales were likely emplaced by Neptune's outward migration. We explore the intrinsic libration amplitude, eccentricity, and inclination…

We present results examining the fate of the Trojan clouds produced in our previous work. We find that the stability of Neptunian Trojans seems to be strongly correlated to their initial post-migration orbital elements, with those objects…

Earth and Planetary Astrophysics · Physics 2011-12-16 Patryk Sofia Lykawka , Jonathan Horner , Barrie W. Jones , Tadashi Mukai

The complex classification of trans-Neptunian objects (TNOs) that are captured in mean-motion resonances (MMRs) and the constraint of their multiple origins are two significant open problems concerning the Solar System. The case-by-case…

Earth and Planetary Astrophysics · Physics 2023-09-13 Alan J. Alves-Carmo , Timothée Vaillant , Alexandre C. M. Correia

Trans-Neptunian Objects (TNOs) in the scattered disk with 50 < a < 100 au are thought to cluster near Neptune's n:1 resonances (e.g: 3:1, 4:1, and so on). While these objects spend lengthy periods of time at large heliocentric distances, if…

Earth and Planetary Astrophysics · Physics 2021-06-30 Matthew S. Clement , Scott S. Sheppard

The 1:N mean motion resonances with Neptune are of particular interest because they have two asymmetric resonance islands, where the distribution of trapped objects may bear important clues to the history of the Solar System. To explore the…

Earth and Planetary Astrophysics · Physics 2024-07-17 Hailiang Li , Li-Yong Zhou

The results of the numerical investigations of the evolution of orbits of trans-Neptunian bodies at the 2 : 3 resonance with Neptune are presented. The gravitational influence of the four giant planets was taken into account. For identical…

Earth and Planetary Astrophysics · Physics 2024-12-19 S. I. Ipatov , J. Henrard

We explore planetary migration scenarios for formation of high inclination Neptune Trojans (NTs) and how they are affected by the planetary migration of Neptune and Uranus. If Neptune and Uranus's eccentricity and inclination were damped…

Earth and Planetary Astrophysics · Physics 2016-03-16 Yuan-Yuan Chen , Yuehua Ma , Jiaqing Zheng

Applying the technique of dynamical maps we study the orbital stability of test particles in the Solar System in the space (a,e,i) defined by 0.1<a<38 au, 0<e<0.9 and 0<i<180 identifying the unstable and stable regions. We find stable…

Earth and Planetary Astrophysics · Physics 2019-05-29 Tabare Gallardo

In this work, we investigate the dynamical stability of pre-formed Neptune Trojans under the gravitational influence of the four giant planets in compact planetary architectures, over 10 Myr. In our modelling, the initial orbital locations…

Earth and Planetary Astrophysics · Physics 2010-07-16 P. S. Lykawka , J. Horner , B. W. Jones , T. Mukai

The existence of Planet Nine has been suggested to explain the pericenter clustering of extreme trans-Neptunian objects (TNOs). However, the underlying dynamics involving Planet Nine, test particles and Neptune is rich, and it remains…

Earth and Planetary Astrophysics · Physics 2018-11-28 Gongjie Li , Samuel Hadden , Matthew Payne , Matthew J. Holman

Since early work on the stability of the first Neptunian Trojan, 2001 QR322, suggested that it was a dynamically stable, primordial body, it has been assumed this applies to both that object, and its more recently discovered brethren.…

Earth and Planetary Astrophysics · Physics 2010-07-16 J. Horner , P. S. Lykawka

We study the Kozai dynamics affecting the orbital evolution of transneptunian objects being captured or not in MMR with Neptune. We provide energy level maps of the type ({\omega},q) describing the possible orbital paths from Neptune up to…

Earth and Planetary Astrophysics · Physics 2015-06-05 Tabare Gallardo , Gaston Hugo , Pablo Pais

The most distant known trans-Neptunian objects (perihelion distance above 38 au and semimajor axis above 150 au) are of interest for their potential to reveal past, external, or present but unseen perturbers. Realizing this potential…

Earth and Planetary Astrophysics · Physics 2022-10-12 Kathryn Volk , Renu Malhotra

The high-inclination population in the 4:7 mean motion resonance (MMR) with Neptune has also substantial eccentricities ($e\gtrsim0.1$), with more inclined objects tending to occupy more eccentric orbits. For this high-order resonance,…

Earth and Planetary Astrophysics · Physics 2020-01-22 Jian Li , S. M. Lawler , Li-Yong Zhou , Yi-Sui Sun

The Neptune Trojans are the most recent addition to the panoply of Solar system small body populations. The orbit of the first discovered member, 2001 QR$_{322}$, was investigated shortly after its discovery, based on early observations of…

Earth and Planetary Astrophysics · Physics 2016-01-05 Jonathan Horner , Patryk Sofia Lykawka

The present-day orbit distribution of the Neptune Trojans is a powerful probe of the dynamical environment of the outer solar system during the late stages of planet migration. In this work, I conservatively debias the inclination,…

Earth and Planetary Astrophysics · Physics 2015-06-23 Alex H. Parker
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