The nature of asteroids

Details The nature of asteroids The nature of asteroids

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975sciam.232...24c&link_type=abstract

Scientific American, vol. 232, Jan. 1975, p. 24-33.

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Asteroids, Astronomical Photometry, Meteoritic Composition, Planetary Evolution, Carbonaceous Meteorites, Chemical Composition, Chondrites, Infrared Spectroscopy, Lunar Soil, Polarimetry

Scientific paper

Knowledge obtained about the origin and composition of asteroids from spectrophotometry, polarimetry, thermal-infrared photometry and the comparative study of meteorites is summarized. Asteroid surfaces fall generally into two classes: one composed largely of silicates and metals and the other rich in carbonaceous material. The abundance of the latter type confirms implications from analyses of meteoric material and lunar soils that asteroidal and interplanetary debris is largely of carbonaceous composition. The requirements for the parent bodies of chondritic and achondritic meteorites are considered. Possible mechanisms of meteorite formation from asteroids are suggested. The asteroids are shown to be prime sites for finding solar system genesis rocks.

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