Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...89...44d&link_type=abstract
Icarus (ISSN 0019-1035), vol. 89, Jan. 1991, p. 44-64.
Astronomy and Astrophysics
Astronomy
20
Asteroids, Astronomical Photometry, Geodesy, Light Curve, Chemical Composition, Size Distribution, Solar System Evolution, Surface Roughness, Asteroids, Asteroid Belt, Photometry, Geodesy, Orbital Elements, Shape, Bettina, Catalog, Distribution, Obliquity, Analysis, Classification, Techniques, Lightcurves, Rotation, Calculations
Scientific paper
The Drummond et al. (1988) analysis of main-belt asteroids is presently extended, using three independent methods to derive poles, periods, phase functions, and triaxial ellipsoid shapes from lightcurve maxima and minima. This group of 26 asteroids is also reinvestigated with a view to the distributions of triaxial shapes and obliquity distributions. Poles weakly tend to avoid asteroid orbital planes; a rough-smooth dichotomization appears to be justified by the persistence of two solar phase angle-amplitude relations. Seven of the objects may be Jacobi ellipsoids if axial ratios are slightly exaggerated by a systematic effect of the analytical method employed.
Chapman Clark R.
Davis Donald R.
Drummond Jack D.
Weidenschilling Stuart J.
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