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Properties of the Near-Earth object population: the ACM 2005 view

Published online by Cambridge University Press:  17 March 2006

Richard P. Binzel  and
Dimitrij F. Lupishko
Richard P. Binzel
Affiliation:
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA email: [email protected]
Dimitrij F. Lupishko
Affiliation:
Institute of Astronomy of Karazin Kharkiv National University, Ukraine email: [email protected]
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Abstract

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Within the near-Earth object population, one finds asteroids, comets, and meteorites thereby placing the NEO population at the center of the ACM conference. The longstanding gulf between the spectral properties of S-type asteroids and ordinary chondrite meteorites appears to be bridged, where the observational data are consistent with a space weathering type process. As much as 30% of the entire NEO population may reside in orbits having a Jovian Tisserand parameter <30, and among these roughly half are observed to have comet-like physical properties in terms of their albedos and spectra (taxonomy). Thus 15±5% of the entire NEO population may be comprised by extinct or dormant comets.

Keywords

steroidcometmeteoritespectraalbedo
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S229: Asteroids, Comets, Meteors , August 2005 , pp. 207 - 214
Copyright
© 2006 International Astronomical Union