Mainbelt asteroids - Dual-polarization radar observations

Details Mainbelt asteroids - Dual-polarization radar observations Mainbelt asteroids - Dual-polarization radar observations

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985sci...229..442o&link_type=abstract

Science (ISSN 0036-8075), vol. 229, Aug. 2, 1985, p. 442-446.

Astronomy and Astrophysics

Astronomy

72

Asteroid Belts, Planetary Surfaces, Radar Astronomy, Albedo, Metallicity, Polarization Characteristics, Porosity, Radar Echoes, Surface Roughness, Asteroids, Polarization, Astronomy, Radar Methods, Observations, Surface, Physical Properties, Characteristics, Pallas, Roughness, Comparisons, Albedo, Porosity, Metals, Concentration, Psyche, Composition

Scientific paper

Observations of 20 asteroids in the main belt between Mars and Jupiter provide information about the nature of these objects' surfaces at centimeter-to-kilometer scales. At least one asteroid (Pallas) is extremely smooth at centimeter-to-meter scales. Each asteroid appears much rougher than the Moon at some scale between several meters and many kilometers. The range of asteroid radar albedos is very broad and implies substantial variations in porosity or metal concentration (or both). The highest albedo estimate, for the asteroid Psyche, is consistent with a surface having porosities typical of lunar soil and a composition nearly entirely metallic.

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