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Of the four giant planets in the Solar system, only Jupiter and Neptune are currently known to possess swarms of Trojan asteroids - small objects that experience a 1:1 mean motion resonance with their host planet. In Lykawka et al. (2009),…

Earth and Planetary Astrophysics · Physics 2011-10-11 P. S. Lykawka , J. Horner

Near Earth Objects (NEOs) are a transient population of small bodies with orbits near or in the terrestrial planet region. They represent a mid-stage in the dynamical cycle of asteroids and comets, which starts with their removal from the…

Kuiper Belt Objects, or more generally Trans-Neptunian Objects (TNOs), are planetesimals found beyond the orbit of Neptune. Some TNOs evolve onto Neptune-crossing orbits and become Centaurs. Many Centaurs, in turn, reach Jupiter-crossing…

Earth and Planetary Astrophysics · Physics 2022-11-01 Wesley C. Fraser , Luke Dones , Kathryn Volk , Maria Womack , David Nesvorný

Over the course of the last decade, observations of highly-inclined (orbital inclination i > 60{\deg}) Trans-Neptunian Objects (TNOs) have posed an important challenge to current models of solar system formation (Levison et al. 2008;…

Earth and Planetary Astrophysics · Physics 2020-09-23 Tobias Köhne , Konstantin Batygin

Recent astronomical observations, in particular from the Kepler and TESS missions and their related follow-ups, have revealed an abundance of exoplanets in the size range between Neptune (4 Earth radii) and Earth (1 Earth radii ), as well…

Earth and Planetary Astrophysics · Physics 2026-04-10 Li Zeng , Stephanie C. Werner , Stein B. Jacobsen , Elena Mamonova , Reidar G. Trønnes , Ramon Brasser

Trans-Neptunian objects (TNO) represent the leftovers of the formation of the Solar System. Their physical properties provide constraints to the models of formation and evolution of the various dynamical classes of objects in the outer…

Surveys have revealed many multi-planet systems containing super-Earths and Neptunes in orbits of a few days to a few months. There is debate whether in situ assembly or inward migration is the dominant mechanism of the formation of such…

Earth and Planetary Astrophysics · Physics 2016-12-23 Sean M. Mills , Daniel C. Fabrycky , Cezary Migaszewski , Eric B. Ford , Erik Petigura , Howard Isaacson

This paper reviews coagulation models for planet formation in the Kuiper Belt, emphasizing links to recent observations of our and other solar systems. At heliocentric distances of 35-50 AU, single annulus and multiannulus planetesimal…

Astrophysics · Physics 2009-11-07 Scott J. Kenyon

The goal of this work is to determine the physical characteristics of resonant, detached and scattered disk objects in the transneptunian region, observed mainly in the framework of the "TNOs are Cool!" Herschel Open Time Key Program. Based…

Earth and Planetary Astrophysics · Physics 2020-07-01 A. Farkas-Takács , Cs. Kiss , E. Vilenius , G. Marton , T. G. Müller , M. Mommert , J. Stansberry , E. Lellouch , P. Lacerda , A. Pál

TESS and Kepler have revealed that practically all close-in sub-Neptunes form in mean-motion resonant chains, most of which unravel on timescales of 100 Myr. Using N-body integrations, we study how planetary collisions from destabilized…

Earth and Planetary Astrophysics · Physics 2025-04-17 Rixin Li , Eugene Chiang , Nick Choksi , Fei Dai

The low-inclination component of the Classical Kuiper Belt is host to a population of extremely widely-separated binaries. These systems are similar to other Trans-Neptunian binaries (TNBs) in that the primary and secondary components of…

Earth and Planetary Astrophysics · Physics 2015-05-30 Alex H. Parker , JJ. Kavelaars , Jean-Marc Petit , Lynne Jones , Brett Gladman , Joel Parker

We demonstrate that the observed distribution of `Hot Neptune'/`Super-Earth' systems is well reproduced by a model in which planet assembly occurs in situ, with no significant migration post-assembly. This is achieved only if the amount of…

Solar and Stellar Astrophysics · Physics 2015-05-28 Brad M. S. Hansen , Norm Murray

The hypothesis of an additional planet in the outer Solar System has gained new support as a result of the confinement noted in the angular orbital elements of distant trans-Neptunian objects. Orbital parameters proposed for the external…

Earth and Planetary Astrophysics · Physics 2018-09-26 Jessica Cáceres , Rodney Gomes

Trans-Neptunian objects (TNOs) with diameter greater than 100 km currently moving in not too eccentric orbits could be formed directly by the contraction of large rarefied condensations. Along with the gravitational influence of planets,…

Astrophysics · Physics 2007-05-23 Sergei I. Ipatov , Leonid M. Ozernoy

The distribution of surface classes of resonant trans-Neptunian objects (TNOs) provides constraints on the protoplanetesimal disk and giant planet migration. To better understand the surfaces of TNOs, the Colours of the Outer Solar System…

Dawson and Murray-Clay (2012) pointed out that the inner part of the cold population in the Kuiper belt (that with semi major axis a<43.5 AU) has orbital eccentricities significantly smaller than the limit imposed by stability constraints.…

Earth and Planetary Astrophysics · Physics 2015-06-18 A. Morbidelli , H. S. Gaspar , D. Nesvorny

In part I, using an effective computational approach, we have reconstructed the population of dust sources between Jupiter and Neptune. Here, in part II, we present the results on distribution of dust produced by 157 real sources (100…

Astrophysics · Physics 2007-05-23 Nikolai N. Gor'kavyi , Leonid M. Ozernoy , Tatiana Taidakova

The current dynamical structure of the Kuiper belt was shaped by the orbital evolution of the giant planets, especially Neptune, during the era following planet formation, when the giant planets may have undergone planet-planet scattering…

Earth and Planetary Astrophysics · Physics 2012-02-29 Schuyler Wolff , Rebekah I. Dawson , Ruth A. Murray-Clay

Plutinos are Kuiper-belt objects that share the 3:2 Neptune resonance with Pluto. The long-term stability of Plutino orbits depends on their eccentricity. Plutinos with eccentricities close to Pluto (fractional eccentricity difference…

Astrophysics · Physics 2009-10-31 Qingjuan Yu , Scott Tremaine

The non-resonant Kuiper belt objects (KBOs) between the 3:2 and 2:1 Neptunian mean motion resonances can be largely divided between a cold classical belt (CCB) and a hot classical belt (HCB). A notable difference between these two…

Earth and Planetary Astrophysics · Physics 2021-07-07 Lukas R Stone , Nathan A Kaib
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