Distribution of spin axes and senses of rotation for 20 large asteroids

Details Distribution of spin axes and senses of rotation for 20 large asteroids Distribution of spin axes and senses of rotation for 20 large asteroids

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...68....1m&link_type=abstract

Icarus (ISSN 0019-1035), vol. 68, Oct. 1986, p. 1-39.

Astronomy and Astrophysics

Astronomy

95

Asteroids, Axes Of Rotation, Planetary Rotation, Least Squares Method, Light Curve, Poles, Stellar Occultation, Asteroids, Distribution, Spin Axes, Rotation, Laetitia, Daphne, Nysa, Statistical Analysis, Catalog, Angular Velocity, Physical Properties, Techniques, Astronomy, Procedure, Calculations, Models, Comparisons, Lightcurves, Pallas, Numerical Methods, Juno, Vesta, Hebe, Iris, Eunomia, Psyche, Massalia, Amphitrite, Fides, Ausonia, Antigone, Kleopatra, Dembowska, Eleonora, Hektor

Scientific paper

Various methods for pole determinations are examined. Previous data on the pole determination problem are reviewed. The principles and procedures of the amplitude-magnitude method which is based on a triaxial ellipsoidal model, and the epoch method which is based on the features of an observed light curves are described. It is observed that the amplitude-magnitude method provides good resolution in one-dimension and the epoch method is utilized to distinguish between prograde and retrograde senses of rotation. The data reveal that a combination of these methods is necessary to accurately predict spin axes and senses of rotation. A combination of the two methods is applied to the pole determinations for 20 main belt Trojan asteroids; the derived pole determinations are presented.

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