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- W2018726674 abstract "view Abstract Citations (34) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of M Class Objects Among the Near-Earth Asteroid Population Tedesco, E. F. ; Gradie, J. Abstract The Earth-approaching asteroids 1986 DA and 1986 EB are found to belong to the M class of asteroids. These are the first of this class to be identified among the Aten, Apollo, and Amor populations. The inferred composition of the M class asteroids is primary metallic iron. If this is indeed the case, then current models for meteorite production based on strength-related collisional processes on asteroidal surfaces predict that these two objects alone should produce about 1% of all meteorite falls. The relative abundances of classes C, S, M, and other among the near-Earth asteroid population are remarkably similar to those found in the inner asteroid belt between the 3:1 and 5:2 resonances, i.e., between 2.50 and 2.82 AU. This dominating presence of the three major asteroid taxonomic classes among the Earth-approaching population argues strongly in favor of an asteroidal source for most such objects. This conclusion leads to the suggestion that extinct comet nuclei, if of a composition other than that found in the asteroid belt, are rare, if they exist at all. Publication: The Astronomical Journal Pub Date: March 1987 DOI: 10.1086/114356 Bibcode: 1987AJ.....93..738T Keywords: Amor Asteroid; Apollo Asteroids; Earth (Planet); Colorimetry; Infrared Photometry; Iron; Iron Meteorites; Nickel; Radiometers; Resonance; ASTEROIDS; M ASTERIODS; ASTRONOMY; COLORIMETRY; PHOTOMETRY; INFRARED; WAVELENGTHS; VISIBLE LIGHT; RADIOMETRY; 1986DA; 1986EB; ALBEDO; ORIGIN; OPTICAL PROPERTIES; CLASSIFICATION; EARTH-CROSSERS; COMPARISONS; SOURCE; MINERALOGY; COMPOSITION; PARENT BODIES; EARTH-BASED OBSERVATIONS; SIZE; TELESCOPE METHODS; ABSOLUTE MAGNITUDE; DIAMETER; CATALOG; ATEN ASTEROIDS; APOLLO ASTEROIDS; AMOR ASTEROIDS; ASTEROID BELT; ABUNDANCE; Lunar and Planetary Exploration; Asteroids; ASTEROIDS full text sources ADS |" @default.
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- W2018726674 date "1987-03-01" @default.
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- W2018726674 title "Discovery of M class objects among the near-earth asteroid population" @default.
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