Physics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...83..349d&link_type=abstract
Icarus (ISSN 0019-1035), vol. 83, Feb. 1990, p. 349-359.
Physics
11
Amor Asteroid, Light Curve, Planetary Rotation, Asteroid Belts, Axes Of Rotation, Ellipsoids, Infrared Photometry, Asteroids, Rotation, Betulia, 1980Pa, Shape, Absolute Magnitude, Phases, Amor Asteroids, Lightcurve, Spectra, Albedo, Parent Bodies, Optical Properties, Earth-Crossers, Models, Earth-Based Observations, Photometry, Orbital Elements
Scientific paper
Although the opportunities to observe such objects occur only at long intervals, the present study illustrates how intensive lightcurve coverage with either a word-wide campaign or an individual apparition can lead to the determination of basic parameters for earth-approaching asteroids in a matter of months. Rotational poles, triaxial ellipsoid shapes, absolute magnitudes, and the phase functions of the two Amor asteroids 1580 Betulia and 3908 have been calculated on the basis of lightcurves obtained, respectively, in a world-wide campaign and in a single apparition. These results allow the planning of efficient flyby missions.
Drummond Jack D.
Wisniewski Weislaw Z.
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