Computer Science
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..145s&link_type=abstract
In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed
Computer Science
Near-Earth Objects: Impacts
Scientific paper
Impact probabilities on the Earth are calculated for all known asteroids using terrestrial eccentricities of 0.0 (circular heliocentric orbit), 0.0167 (the present value) and 0.0579 (the maximum value attained as our orbit evolves). Although the latter eccentricity leads to a greater number of asteroids having Earth-crossing orbits (i.e. present-day Amors having perihelia within 1.06 AU, plus presumably a yet-undiscovered population with aphelia currently just within our orbit), it is found that the impact rate is largely unaffected: the increase in the population selected is compensated by a decrease in the individual collision probabilities. Mean impact probabilities are also derived as a function of the asteroid size, or limiting magnitude. As is to be expected, the smaller objects have higher impact probabilities than the larger ones, due to discovery selection effects. Similarly the impact speeds are lower for the smaller asteroids because these selection effects lead to low-eccentricity, low-inclination orbits near Earth being favoured.
No associations
LandOfFree
Terrestrial impact rates for the known population of Earth-crossing asteroids 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 Terrestrial impact rates for the known population of Earth-crossing asteroids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Terrestrial impact rates for the known population of Earth-crossing asteroids will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-737981