Near-earth asteroids - Possible sources from reflectance spectroscopy

Details Near-earth asteroids - Possible sources from reflectance spectroscopy Near-earth asteroids - Possible sources from reflectance spectroscopy

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985sci...229..160m&link_type=abstract

Science (ISSN 0036-8075), vol. 229, July 12, 1985, p. 160-163. Research supported by the Space Foundation of Houston.

Mathematics

Logic

40

Asteroids, Astronomical Spectroscopy, Satellite Surfaces, Spectral Reflectance, Albedo, Earth Environment, Gravitational Effects, Mineralogy, Spectral Signatures, Asteroids, Reflectance, Spectroscopy, Spectra, Comparisons, Planets, Satellites, Source, Mineralogy, Composition, Models, Kirkwood Gap, Flora Asteroids, Gravity Effects, Perturbations, Surface

Scientific paper

Spectra of near-Earth asteroids were compared to spectra of selected asteroids, planets, and satellites to determine possible source regions. The diversity of reflectance spectra of the near-Earth asteroids implies different mineralogical compositions and hence more than one source region. The presence of near-Earth asteroid spectral signatures similar to those of certain main-belt asteroids supports models that derive some of these asteroids from the 5:2 Kirkwood gap and Flora family by gravitational perturbations. Planetary and satellite surfaces are different in composition than the near-Earth asteroids, which is in agreement with theoretical arguments that such bodies should not be sources. Some near-Earth asteroids supply portions of Earth's meteorite flux, but other sources must also contribute.

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