ISO observations of asteroids

Details ISO observations of asteroids ISO observations of asteroids

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427..165d&link_type=abstract

The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 165

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Asteroids, Spectroscopy

Scientific paper

Asteroids were observed by ISO with several instruments (PHT-P, PHT-S and SWS). The aim of these observations was to investigate the asteroid physical and compositional properties. Sixteen asteroids have been observed by PHT-P and PHT-S: with PHT-P we obtained the observations at filters 3.6, 10, 11.5, 25, and 60 μm for 10 asteroids and only at filters 3.6 and 10 μm for the other 6 objects. With PHT-S we obtained simultaneously the 2.5-5 and 5.8-11.6 μm spectral ranges. Four of these asteroids have been also observed with SWS between 5.3 and 45 μm. The first analysis of the obtained spectra has shown some features which suggest the presence of oxides (e.g. magnetite, hematite, etc.) among the surface materials of 10 Hygiea and 308 Polyxo, indicating aqueous alteration on the surfaces of these objects.

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