Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....66...31s&link_type=abstract
Astronomy and Astrophysics, vol. 66, no. 1-2, May 1978, p. 31-36.
Astronomy and Astrophysics
Astrophysics
14
Asteroids, Astronomical Models, Light Curve, Rotating Bodies, Angular Distribution, Ellipsoids, Mathematical Models, Phase Deviation, Particles, Configurations, Coordinate System, Scattering, Light(Visible Radiation), Rotation, Asteroids, Models, Spherules
Scientific paper
A triaxial-ellipsoid model is used to simulate the smooth and nearly symmetric light curves that are usually characteristic of asteroids which exhibit large brightness variations. The mathematical model is developed and applied to two problems involving an asteroid moving with its rotational axis either perpendicular to or lying within the plane containing the sun and earth. The numerical results obtained are compared with Dunlap's (1971) simulations of asteroid brightness variations, and it is argued that typical asteroid phase coefficients cannot be interpreted unambiguously. The results are shown to favor the Hapke-Irvine relation for describing the scattering properties of a dark asteroid surface.
Surdej A.
Surdej Jean
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