MUSES-C target asteroid (25143) 1998 SF36: A reddened ordinary chondrite

Details MUSES-C target asteroid (25143) 1998 SF36: A reddened ordinary chondrite MUSES-C target asteroid (25143) 1998 SF36: A reddened ordinary chondrite

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001m%26ps...36.1167b&link_type=abstract

Meteoritics & Planetary Science, vol. 36, no. 8, pp. 1167-1172 (2001)

Computer Science

45

Scientific paper

Near-Earth asteroid (25143) 1998 SF36 is a planned target for the Japanese MUSES-C sample return mission. High signal-to-noise and relatively high-resolution (50 A) visible and near-infrared spectroscopic measurements obtained during this asteroid's favorable 2001 apparition reveal it to have a red-sloped S(IV)-type spectrum with strong 1 and 2 lm absorption bands analogous to those measured for ordinary chondrite meteorites. This red slope, which is the primary spectral difference between (25143) 1998 SF36 and ordinary chondrite meteorites, is well modeled by the spectrum of 0.05% nanophase iron (npFe0) proposed as a weathering mechanism by Pieters et al. (2000). Asteroid 1998 SF36 appears to have a surface composition corresponding to that of ordinary chondrite meteorites and is most similar in spectral characteristics and modeled olivine/pyroxene content to the LL chondrite class.

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