Is 1220 Crocus a precessing, binary asteroid?

Details Is 1220 Crocus a precessing, binary asteroid? Is 1220 Crocus a precessing, binary asteroid?

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...63...99b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 63, July 1985, p. 99-108.

Astronomy and Astrophysics

Astronomy

23

Asteroids, Electrophotometry, Morphology, Natural Satellites, Precession, Angular Momentum, Astronomical Models, Inertia, Light Curve, Periodic Variations, Spectral Energy Distribution, Asteroids, Crocus, Precession, Binary Asteroids, Photoelectric Methods, Observations, Eos Asteroids, Periods, Lightcurves, Amplitude, Hypotheses, Satellites, Torque, Source, Calculations, Dynamics, Light (Visible)

Scientific paper

Photoelectric data of the asteroid 1220 Crocus over a 13 night period in 1984 revealed the presence of two separate periods. The light curves were indicative of a precessing body, but not one in free precession due to motions induced by a collision. Closer examinations revealed periods of 30.7 and 7.9 hr with amplitudes of 0.87 and 0.15 mag, respectively. An analysis of the source of an external torque which could be causing a forced precession led to the hypothesis that 1220 Crocus has a satellite. Verification of the binary asteroid configuration will depend on more detailed light curves, the possible modulation of the shorter period by the longer, and possible use of the Space Telescope.

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