The unusual asteroid 216 Kleopatra

Details The unusual asteroid 216 Kleopatra The unusual asteroid 216 Kleopatra

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980s%26t....60..203t&link_type=abstract

Sky and Telescope, volume 60, page 203.

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2

Asteroids, Brightness, Periodic Variations, Astronomical Spectroscopy, Occultation, Planet Ephemerides, Planetary Rotation

Scientific paper

Observations of variations of greater than one magnitude in the brightness of the asteroid 216 Kleopatra are reported. The asteroid was observed on two consecutive nights to vary with an amplitude between 1.3 and 1.4 magnitudes over the course of its 5.394-h rotational period. It is pointed out that, unlike the other three minor planets with unusually large brightness variations, Kleopatra is a bright main-belt asteroid, and, contrary to previous estimates, its spectral properties imply a diameter of less than 100 km. Kleopatra has been predicted to occult the 8.8-magnitude star SAO 128066 on October 10, 1980, and further observations of light variations would aid in occultation observations.

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