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Physical Properties of Near-Earth Objects

Binzel, R.P. and Lupishko, D.F. and Di Martino, M. and Whitheley, R.J. and Hahn, G.J. (2002) Physical Properties of Near-Earth Objects. In: Asteroids III University of Arizona Press. pp. 205-218. ISBN 0-8165-2281-2.

Full text not available from this repository.

Abstract

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 relationships between these categories of solar-system small bodies and their source(s) of resupply. Even accounting for strong bias factors in the discovery and characterization of higher-albedo objects. NEOs having S-type spectra are proportionally more abundant than within the main asteroid belt as a whole. This, an inner asteroid belt origin (where S-type objects dominate) is implied for most NEOs. The identification of a cometary contribution within the NEO population remains one of a case-by-case examination of unusual objects, and the sum of evidence suggests that comets contribute at most only a few percent of the total. With decreasing size and younger surfaces (due to presumably shorter collisional lifetimes for smaller objects), NEOs show a transition in spectral properties toward resembling the most common meteorites, the ordinary chondrites. Ordinary chondritelike objects are no longer rare among the NEOs, and at least qualitatively it is becoming understandable why these objects comprise a high proportion of meteorite falls. Comparisons that can be performed between asteroidal NEOs and their main-belt counterparts suggest that the physical properties (e.g. rotation states, configurations, spectral colors, surface scattering) of NEOs may be represantative of main-belt asteroids (MBAs) at similar (but presently unobservable) sizes.

Document Type:Book Section
Additional Information: LIDO-Berichtsjahr=2003,
Title:Physical Properties of Near-Earth Objects
Authors:
AuthorsInstitution or Email of Authors
Binzel, R.P.Massachusetts Institute of Technology
Lupishko, D.F.Institute of Astronomy of Kharkov National University
Di Martino, M.Astronomico Osservatorio di Torino
Whitheley, R.J.University of Arizona
Hahn, G.J.UNSPECIFIED
Date:2002
Journal or Publication Title:Asteroids III
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 205-218
Editors:
EditorsEmail
Bottke, W.F.UNSPECIFIED
Cellino, A.UNSPECIFIED
Paolicchi, P.UNSPECIFIED
Binzel, R.P.UNSPECIFIED
Publisher:University of Arizona Press
ISBN:0-8165-2281-2
Status:Published
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Institut für Planetenerkundung
Deposited By: Susanne Pieth
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 16:05

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