Three basaltic earth-approaching asteroids and the source of the basaltic meteorites

Details Three basaltic earth-approaching asteroids and the source of the basaltic meteorites Three basaltic earth-approaching asteroids and the source of the basaltic meteorites

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...89....1c&link_type=abstract

Icarus (ISSN 0019-1035), vol. 89, Jan. 1991, p. 1-13.

Computer Science

80

Asteroids, Basalt, Infrared Spectra, Meteoritic Composition, Visual Photometry, Grain Size, Near Infrared Radiation, Spectral Bands, Vesta Asteroid

Scientific paper

Diameters of 1.2, 1.0, and 3.4 km are respectively derived for the earth-approaching asteroids 1983 RD, 1980 PA, and 1985 DO2, whose spectra are virtually identical to that of the basaltic-surfaced large asteroid, Vesta. While probably not fragments of Vesta, the three asteroids may be fragments of one or more Vesta-like parent bodies; it is suggested that they may be fragments of the source body or bodies of the HED meteorites. While these asteroids' regoliths have significant insulating properties, they differ from that of the moon in that lunar-like glasses and agglutinates are largely absent. It is noted that asteroids of this kind may have impacted the earth without leaving the chemical signatures associated with the K-T boundary event.

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