Lightcurves of highly nonconvex and binary asteroids

Details Lightcurves of highly nonconvex and binary asteroids Lightcurves of highly nonconvex and binary asteroids

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..747d&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Computer Science

Asteroids, Lightcurves

Scientific paper

We present our analysis of synthetic lightcurves of binary and highly nonconvex asteroids with respect to the solar phase angle and the degree of nonconvexity. The measure of nonconvexity of an object is defined and computed for asteroids with known shapes. We discuss the possibility of recovering global nonconvexities or binary structure of an asteroid from its lightcurves. The importance of observations at high solar phase angles is emphasized. For main belt asteroids only binary or bifurcated shapes can be recovered - star-like asteroids can be modelled as convex bodies. Concavities can be revealed only if an asteroid is observed at sufficiently high solar phase angles (α > 60°) when shadowing effects become important. This can be fulfilled only for near-Earth asteroids.

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