Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...78..363h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 78, April 1989, p. 363-381.
Astronomy and Astrophysics
Astronomy
15
Amor Asteroid, Apollo Asteroids, Astronomical Photometry, Light Curve, Orbital Resonances (Celestial Mechanics), Rotation, Shapes, Ubv Spectra, Asteroids, Apollo Asteroids, Amor Asteroids, Physical Properties, Ivar, Photometry, Ganymede, Photoelectric Methods, Lightcurves, Rotation, Data, Period, Color, Wavelengths, Optical Properties, Earth-Based Observations, S Asteroids
Scientific paper
The 1036 Ganymed and 1627 Ivar photoelectric lightcurves presently discussed indicate in the former case a drastic lightcurve shape change, in conjunction with a significant increase of the synodic rotation period; a substantial change in viewing conditions during the apparition, and a complex interaction between these changes and the asteroid's irregular shape, are indicated by the change. In the latter asteroid's case, a prograde rotation rate is apparent in the observed decrease in synodic period. Both asteroids' phase curves exhibit deviations from the H-G magnitude system phase function at large phase angles.
Belkora Leila Ann
Burchi R.
Ciunci G.
Debehogne Henri
di Martino Mario
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