Other
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...73..487h&link_type=abstract
Icarus (ISSN 0019-1035), 73, March 1988, p. 487-498. NASA-supported research.
Other
30
Asteroid Belts, Collision Rates, Comet Nuclei, Lagrangian Equilibrium Points, Light Curve, Mass To Light Ratios, Satellite Rotation, Solar System, Southern Hemisphere
Scientific paper
The authors have expanded the available sample of Trojan and Hilda lightcurve amplitudes by about a factor of 3. They compare the available sample of lightcurves of 26 Trojan and Hilda asteroids with lightcurves of belt asteroids. The sample of Trojans and Hildas appears to have a greater incidence of high amplitudes than the belt asteroids of comparable size, suggesting more elongated shapes. The 100-km-scale Trojans (and probably the Hildas) currently have only a few percent of the collision frequency of main-belt asteroids. One promising hypothesis could be that 100-km-scale primitive planetesimals formed with more irregular shapes than present-day belt asteroids of similar size, which may have been rounded by collisional erosion. Other hypotheses are discussed.
Binzel Richard P.
Cruikshank Dale P.
Goguen Jay
Hartmann William K.
Tholen David J.
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