Planetary astronomy

Details Planetary astronomy Planetary astronomy

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991plas.rept..149c&link_type=abstract

In NASA, Washington, Reports of Planetary Astronomy, 1991 p 149 (SEE N92-12792 03-89)

Astronomy and Astrophysics

Astronomy

Asteroid Belts, Asteroids, Brightness, Light Curve, Meteorite Collisions, Astronomical Models, Fragments, Gravitation, Shapes, Spin Dynamics

Scientific paper

Many asteroids are known to be non-spherical, as revealed by changes in their brightness as they rotate (light curves) and present varying cross-sections to view. Models of collisional evolution of the asteroid belt suggest that many of the larger asteroids are shattered rubble piles, consisting of fragments bound together by gravity. If these assemblages are sufficiently weak, they should relax to equilibrium shapes that depend only on their spin periods and densities. Thus, if shape of an asteroid is known, one might infer its density and internal structure.

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