Other
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000icar..143..421m&link_type=abstract
Icarus, Volume 143, Issue 2, pp. 421-424.
Other
20
Scientific paper
The so-called Aten asteroids, evolving on orbits with semimajor axis a<1 AU and aphelion distance Q>0.983 AU, spend most of their time inside Earth's orbit. Currently, they account for about 7% of the observed near-Earth asteroid population and 13% of the Earth-crossing one. However, observational biases play against their discovery; thus the present number of Atens is probably severely underestimated. Another still unobserved population of asteroids, which we call IEO (inner-Earth objects), could also exist and evolve entirely inside Earth's orbit. Orbital numerical integrations of known source populations of Earth-crossers indicate that the real fraction of Atens and IEOs in the Earth-crossing population depends on the considered objects' diameters and could be close to 20% considering only the multikilometer bodies. Moreover, the fraction of IEOs could be as large as half that of Atens. Since these asteroids can also impact Earth, their threat should seriously be taken into account.
Cellino Alberto
Michel Patrick
Tanga Paolo
Zappalá Vincenzo
No associations
LandOfFree
NOTE: Estimated Abundance of Atens and Asteroids Evolving on Orbits between Earth and Sun 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 NOTE: Estimated Abundance of Atens and Asteroids Evolving on Orbits between Earth and Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NOTE: Estimated Abundance of Atens and Asteroids Evolving on Orbits between Earth and Sun will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1494821