NOTE: Size and Orbit Dependent Trends in the Reflectance Colors of Earth-Approaching Asteroids

Details NOTE: Size and Orbit Dependent Trends in the Reflectance Colors of Earth-Approaching Asteroids NOTE: Size and Orbit Dependent Trends in the Reflectance Colors of Earth-Approaching Asteroids

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998icar..134..342r&link_type=abstract

Icarus, Volume 134, Issue 2, pp. 342-346.

Physics

18

Scientific paper

New observations show that reflectance colors of Earth-approaching asteroids depend on their sizes and orbits. Most bodies larger than ~2 km have reddish colors similar to common main-belt asteroids of spectral type S. Smaller bodies, and those that may have recently migrated from the main belt, have relatively neutral spectra in the 0.5- to 0.8-μm wavelength range. These trends may result from the action of ``space-weathering,'' recently proposed to explain similar spectral variations on the surfaces of S-type asteroids and the disparity between the colors of ordinary chondrite meteorites and their probable main-belt parents.

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