Migration of Trans-Neptunian Objects to the Terrestrial Planets

  title={Migration of Trans-Neptunian Objects to the Terrestrial Planets},
  author={Sergei I. Ipatov and John C. Mather},
  journal={Earth, Moon, and Planets},
The orbital evolution of more than 22000 Jupiter-crossing objects under thegravitational influence of planets was investigated. We found that the meancollision probabilities of Jupiter-crossing objects (from initial orbits close tothe orbit of a comet) with the terrestrial planets can differ by more than twoorders of magnitude for different comets. For initial orbital elements close tothose of some comets (e.g., 2P and 10P), about 0.1% of objects got Earth-crossingorbits with semi-major axes a… 
Migration of Dust Particles and Delivery of Volatiles to the Terrestrial Planets
Results of computer simulations of the migration of small bodies and dust in the Solar System showed that a relative fraction of cometary and trans-Neptunian dust particles in the total balance of
Velocities and relative amount of material ejected from Comet 9P/Tempel 1 after the Deep Impact collision
Time variations in velocities and relative amount of material ejected from Comet 9P/Tempel 1 are studied based on analysis of the images made by Deep Impact (DI) cameras during the first 13 minutes
Migration of Jupiter‐Family Comets and Resonant Asteroids to Near‐Earth Space
Abstract: The orbital evolution of about 26,000 Jupiter‐crossing objects and 1,500 resonant asteroids under the gravitationa influence of planets was investigated. The rate of their collisions with


Comet and asteroid hazard to the terrestrial planets
Formation and migration of trans-Neptunian objects and asteroids
The evolution of thousands of orbits of Jupiter-family comets and asteroids under the gravitational influence of planets was calculated. Comparison of the results obtained by a symplectic method with
Comet hazard to the Earth
From the Kuiper Belt to Jupiter-Family Comets: The Spatial Distribution of Ecliptic Comets☆
Abstract We present numerical orbital integrations of thousands of massless particles as they evolve from Neptune-encountering orbits in the Kuiper belt for up to 1 Gyr or until they either impact a
Are There Many Inactive Jupiter-Family Comets among the Near-Earth Asteroid Population?
Abstract We analyze the dynamical evolution of Jupiter-family (JF) comets and near-Earth asteroids (NEAs) with aphelion distances Q >3.5 AU, paying special attention to the problem of mixing of both
Physical Properties of Near-Earth Objects
The population of near-Earth objects (NEOs) contains asteroids, comets, and the precursor bodies for meteorites. The challenge for our unterstanding of NEOs is to reveal the proportions and
We numerically integrated the orbits of 1458 particles in the region of the classical Kuiper belt (41 AU ≤ a ≤ 47 AU) to explore the role of dynamical instabilities in sculpting the inclination
The Cometary Contribution to Planetary Impact Rates
We use statistics on the nuclear magnitudes of Jupiter Family comets to derive the number of km-sized members with perihelion distances less than 2 AU. When coupled with impact rates per comet taken
Migration of Trans-Neptunian Objects to the Earth
Migration of trans-Neptunian objects under their mutual gravitation influence and the influence of the giant planets is investigated. These investigations are based on computer simulation results and
A disk of scattered icy objects and the origin of Jupiter-family comets.
Two recently discovered objects, 1996 RQ20 and 1996 TL66, have orbital elements similar to those predicted for objects in this disk, suggesting that they are thus far the only members of this disk to be identified.