Smaller objects are also more numerous and more likely to collide withEarth. There are several reasons to expect them to have differentproperties from larger objects, spin rate, porosity, composition, degreeof internal heating and differentiation.
I agree IR is necessary (don't forget IRTF), and currently we have IRspectra for <2% of known NEA.
At 09:10 AM 7/28/2010, you wrote:
Hello everyone -- Attachedplease find a rough, first-draft
W. M. Keck Professor of Space and Planetary Sciences
Arkansas Center for Space and Planetary Science and
Department of Chemistry and Biochemistry
University of Arkansas
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This Author (Jul-2010)