Are There Many Inactive Jupiter-Family Comets among the Near-Earth Asteroid Population?

@article{Fernndez2002AreTM,
  title={Are There Many Inactive Jupiter-Family Comets among the Near-Earth Asteroid Population?},
  author={Julio A. Fern{\'a}ndez and Tabar{\'e} Gallardo and Adrian Brunini},
  journal={Icarus},
  year={2002},
  volume={159},
  pages={358-368}
}
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 populations, such that inactive comets may be disguised as NEAs. From numerical integrations for 2×10 6 years we find that the half lifetime (where the lifetime is defined against hyperbolic ejection or collision with the Sun or the planets) of near-Earth JF comets (perihelion distances q 5 years… 
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References

SHOWING 1-10 OF 39 REFERENCES
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
The Cometary Component of the Near-Earth Object Population
The problem of the origin of Near-Earth Objects (NEOs), whether predominantly cometary or asteroidal, has attracted much recent interest. In this work, we consider NEOs to have perihelion distances q
The population, magnitudes, and sizes of Jupiter family comets
We analyze the sample of measured nuclear magni- tudes of the observed Jupiter family (JF) comets (taken as those with orbital periods P 2). We find a tendency of the measured nuclear magnitudes to
End Products of Cometary Evolution: Cometary Origin of Earth-Crossing Bodies of Asteroidal Appearance
Because there is no necessary connection between the time required to remove the volatile component of a cometary nucleus by solar heating (physical lifetime) and the dynamical lifetime of a comet,
Where do the Apollo objects come from
Monte Carlo calculations have been carried out to trace the orbital evolution of ∼1- to 45-km-diameter bodies produced by collisions in the asteroid belt interior to 2.6 AU. It is found that about 3%
The Near-Earth Object Population
We examine the dynamics of a sample of 117 near-Earth objects (NEOs) over a time scale of 60 Myr. We find that while 10–20% end their lifetimes by striking a terrestrial planet (usually Venus or
The main belt as a source of near-Earth asteroids
We investigate the flux of main-belt asteroid fragments into resonant orbits converting them into near-Earth asteroids (NEAs), and the variability of this flux due to chance interasteroidal
The orbital dispersion of the macroscopic Taurid objects
If the Taurid Complex asteroids (plus 2PlEncke) are derived from the fragmentation of a giant comet over the past 20-30 kyr, as we have suggested elsewhere, then we need to identify some mechanism
Origins for the Near-Earth Asteroids
TLDR
A new survey of physical properties for D < 5 kilometers main-belt asteroids reveals that their spin rate and shape distributions are similar to those of NEAs, as is fully consistent with a main- belt origin for most NEAs.
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
...
1
2
3
4
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