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Some thoughts. 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. Derek At 09:10 AM 7/28/2010, you wrote: Hello everyone -- Attachedplease find a rough, first-draft University Professor 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 Fayetteville Arkansas 72701 Office: OZAR 12C Mail Stop: CHEM 119 FedEX/UPS address is 345 N. Campus Drive, Fayetteville, AR 72701 Phone: 479 575 4272 Fax: (479) 575 4049 E-mail: [email protected] Website:www.uark.edu/depts/cosmo *Confidentiality Notice:* /This e-mail message including any attachments is for the sole use of theintended recipient(s) and may contain confidential and privilegedinformation. Any unauthorized review; use, disclosure ordistribution is prohibited. If you are not the intendedrecipient(s), please contact the sender by reply e-mail and destroy allcopies of the original message/. |