Dynamical evolution of 1036 Ganymed, the largest near-Earth asteroid

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

5

Celestial Mechanics, Stellar Dynamics, Meteors, Meteoroids, Minor Planets, Asteroids

Scientific paper

{We have studied numerically the dynamical evolution of 1036 Ganymed, the largest near-Earth asteroid, by integrating the orbits of tens of ``clone'' particles with similar initial conditions. Typically, the orbit initially undergoes large, coupled oscillations of the eccentricity and inclination; then, Mars encounters random-walk the semimajor axis until it reaches a strong Jovian resonance; and eventually, resonant effects pump up the eccentricity until the orbit becomes Sun-grazing or hyperbolic (after encountering Jupiter). The median dynamical lifetime is of about 10 Myr. Most orbits become Earth-crossing within 10 Myr of evolution. The origin of Ganymed and a few other sizable Mars-crossing asteroids with similar orbital elements is an open problem, since the main-belt asteroid population in the neighbouring lower-eccentricity portion of the phase space is quite sparse. Although Ganymed's reflectance spectrum has some similarity to those of the ordinary chondrites, the Earth delivery efficiency from bodies with this type of orbits is low, because they are short-lived after they become Earth-crossing.}

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Dynamical evolution of 1036 Ganymed, the largest near-Earth asteroid does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamical evolution of 1036 Ganymed, the largest near-Earth asteroid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical evolution of 1036 Ganymed, the largest near-Earth asteroid will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1617290

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.