Convex profiles from asteroid lightcurves

Details Convex profiles from asteroid lightcurves Convex profiles from asteroid lightcurves

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...57..443o&link_type=abstract

Icarus (ISSN 0019-1035), vol. 57, March 1984, p. 443-463.

Astronomy and Astrophysics

Astronomy

27

Asteroids, Astronomical Photometry, Light Curve, Ellipsoids, Phase Shift, Rotation, Asteroids, Lightcurves, Procedure, Data Reduction, Shape, Scattering, Parameters, Calculations, Geometry, Techniques, Hypotheses, Eumomia, Peitho, Asporina, Lucretia, Pretoria, Toro, 1978 Ca, Diagrams, Rotation, Statistical Analysis

Scientific paper

A lightcurve inversion method that yields a two-dimensional convex profile is introduced. The number of parameters that characterize the profile is limited only by the number of Fourier harmonics used to represent the parent lightcurve. The implementation of the method is outlined by a recursive quadratic programming algorithm, and its application to photoelectric lightcurves and radar measurements is discussed. Special properties of the lightcurves of geometrically scattering ellipsoids are pointed out, and those properties are used to test the inversion method and obtain a criterion for judging whether any lightcurve could actually be due to such an object. Convex profiles for several asteroids are shown, and the method's validity is discussed from a physical as well as purely statistical point of view.

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