Radar observations of asteroid 1998 ML14

Details Radar observations of asteroid 1998 ML14 Radar observations of asteroid 1998 ML14

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001m%26ps...36.1225o&link_type=abstract

Meteoritics & Planetary Science, vol. 36, no. 9, pp. 1225-1236 (2001)

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Scientific paper

Goldstone and Arecibo delay-Doppler radar imaging of asteroid 1998 ML14 shortly after its discovery reveals a 1-km-diameter spheroid with prominent topography on one side and subdued topography on the other. The object's radar and optical properties are typical for S-class near-Earth asteroids. The gravitational slopes of a shape model derived from the images and assumed to have a uniform density are shallow, exceeding 30? over only 4% of the surface. If 1998 ML14's density distribution is uniform, then its orbital environment is similar to a planetary body with a spheroidal gravitational field and is relatively stable. Integration of a radar-refined orbit reveals that the 1998 apparition was the asteroid's closest approach to Earth since at least 1100 and until 2283, when it approaches to within 2.4 lunar distances. Outside of that time interval, orbit uncertainties based on the present set of observations preclude reliable prediction.

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