Collisional evolution in the EOS and Koronis asteroid families - Observational and numerical results

Details Collisional evolution in the EOS and Koronis asteroid families - Observational and numerical results Collisional evolution in the EOS and Koronis asteroid families - Observational and numerical results

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...73..303b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 73, Feb. 1988, p. 303-313.

Astronomy and Astrophysics

Astronomy

51

Asteroids, Collisions, Natural Satellites, Orbit Calculation, Solar Orbits, Angular Momentum, Maxwell-Boltzmann Density Function, Planetary Rotation, Asteroids, Collisions, Evolution, Eos Family, Koronis Family, Origin, Formation, Analysis, Rotation, Distribution, Astronomy, Comparisons, Parent Bodies, Numerical Methods, Models, Angular Momentum, Amplitude, Relative Age, Lightcurves, Shape, Obliquity, Hypotheses, Catalog, Experiments, Calculations, Data, Earth-Based Observations

Scientific paper

Recent observational results (R. P. Binzel, 1987) are analyzed to investigate the origin and evolution of the Eos and Koronis families. Rotation rates in the Eos family display a Maxwellian distribution implying a collisionally evolved population and are significantly faster than Koronis family and nonfamily asteroids. Observational and laboratory results suggest that the largest members in each family may still "remember" their parent-body rotation rates which were both in the range of 1 - 3 revolutions/day. Results from a numerical model for the collisional evolution of rotational angular momentum are used to interpret the different rotational characteristics as possibly being due to different relative ages of the families.

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