Origin of the peculiar eccentricity distribution of the inner cold Kuiper belt

  title={Origin of the peculiar eccentricity distribution of the inner cold Kuiper belt},
  author={Alessandro Morbidelli and H. S. Gaspar and David Nesvorn{\'y}},
Abstract Dawson and Murray-Clay (Dawson and Murray-Clay [2012]. Astrophys. J., 750, 43) 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. Here, we confirm their result by looking at the orbital distribution and stability properties in proper element space. We show that the observed distribution could have been produced by the slow… 

Figures from this paper

Dynamical effects on the classical Kuiper belt during the excited-Neptune model
Abstract The link between the dynamical evolution of the giant planets and the Kuiper Belt orbital structure can provide clues and insight about the dynamical history of the Solar System. The
Neptune's Orbital Migration Was Grainy, Not Smooth
The Kuiper belt is a population of icy bodies beyond the orbit of Neptune. The complex orbital structure of the Kuiper belt, including several categories of objects inside and outside of resonances
The Evidence for Slow Migration of Neptune from the Inclination Distribution of Kuiper Belt Objects
Much of the dynamical structure of the Kuiper belt can be explained if Neptune migrated over several AU, and/or if Neptune was scattered to an eccentric orbit during planetary instability. An
Forming the Cold Classical Kuiper Belt in a light Disk
Large Kuiper Belt Objects are conventionally thought to have formed out of a massive planetesimal belt that is a few thousand times its current mass. Such a picture, however, is incompatible with
De-biased populations of Kuiper belt objects from the deep ecliptic survey
The Deep Ecliptic Survey (DES) was a survey project that discovered hundreds of Kuiper Belt objects from 1998 to 2005. Extensive follow-up observations of these bodies has yielded 304 objects with
Unusual Eccentricity and Inclination Distributions of Trans-Neptunian Objects and Trans-Neptunian Binaries
The eccentricity and inclination of trans-Neptunian objects (TNOs) decrease significantly as radius of perihelion increases. Also, the percentage of TNOs in almost circular orbits with low
The intrinsic Neptune Trojan orbit distribution: Implications for the primordial disk and planet migration
Abstract 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,
The color and binarity of (486958) 2014 MU69 and other long-range New Horizons Kuiper Belt targets
Abstract The Hubble Space Telescope (HST) measured the colors of eight Kuiper Belt Objects (KBOs) that will be observed by the New Horizons spacecraft including its 2019 close fly-by target the Cold
The Kuiper Belt is a population of icy bodies beyond the orbit of Neptune. A particularly puzzling and up-to-now unexplained feature of the Kuiper Belt is the so-called ?kernel,? a concentration of
Limits on the number of primordial Scattered disc objects at Pluto mass and higher from the absence of their dynamical signatures on the present-day trans-Neptunian Populations
Today, Pluto and Eris are the largest and most massive Trans-Neptunian Objects respectively. They are believed to be the last remnants of a population of planetesimals that has been reduced by >99%


The origin of the Kuiper Belt high-inclination population
I simulate the orbital evolution of the four major planets and a massive primordial planetesimal disk composed of 104 objects, which perturb the planets but not themselves. As Neptune migrates by
Retention of a Primordial Cold Classical Kuiper Belt in an Instability-Driven Model of Solar System Formation
The cold classical population of the Kuiper Belt exhibits a wide variety of unique physical characteristics, which collectively suggest that its dynamical coherence has been maintained throughout the
The origin of Pluto's orbit: implications for the
The origin of the highly eccentric, inclined, and resonance-locked orbit of Pluto has long been a puzzle. A possible explanation has been proposed recently which suggests that these extraordinary
Neptune's dynamical history shaped the current orbits of Kuiper Belt objects (KBOs), leaving clues to the planet's orbital evolution. In the 'classical' region, a population of dynamically 'hot'
The formation of the Kuiper belt by the outward transport of bodies during Neptune's migration
It is shown that the objects currently observed in the dynamically cold Kuiper belt were most probably formed within ∼35 au and were subsequently pushed outward by Neptune's 1:2 mean motion resonance during its final phase of migration.
The Kuiper Belt and the Primordial Evolution of the Solar System
We discuss the structure of the Kuiper belt as it can be inferred from the first decade of observations. In particular, we focus on its most intriguing properties — the mass deficit, the
Origin of the structure of the Kuiper belt during a dynamical instability in the orbits of Uranus and Neptune
Abstract We explore the origin and orbital evolution of the Kuiper belt in the framework of a recent model of the dynamical evolution of the giant planets, sometimes known as the Nice model. This
Statistical Study of the Early Solar System's Instability with Four, Five, and Six Giant Planets
Several properties of the solar system, including the wide radial spacing and orbital eccentricities of giant planets, can be explained if the early solar system evolved through a dynamical
Origin of the cataclysmic Late Heavy Bombardment period of the terrestrial planets
This model not only naturally explains the Late Heavy Bombardment, but also reproduces the observational constraints of the outer Solar System.
Characterization of Seven Ultra-wide Trans-Neptunian Binaries
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