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Photometric geodesy of main-belt asteroids. IV - An updated analysis of lightcurves for poles, periods, and shapesThe 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.
Document ID
19910038956
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Drummond, J. D.
(Arizona, University Tucson, United States)
Weidenschilling, S. J.
(Arizona Univ. Tucson, AZ, United States)
Chapman, C. R.
(Arizona Univ. Tucson, AZ, United States)
Davis, D. R.
(Planetary Science Institute Tucson, AZ, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Icarus
Volume: 89
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
91A23579
Funding Number(s)
CONTRACT_GRANT: NASW-3134
Distribution Limits
Public
Copyright
Other

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