Mathematics – Probability
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...37..133s&link_type=abstract
Icarus, vol. 37, Jan. 1979, p. 133-141. Research supported by the Oesterreichischer Fonds zur Foerderung der Wissenschaftlichen
Mathematics
Probability
6
Asteroids, Electrophotometry, Light Curve, Planetary Radiation, Planetary Rotation, Data Acquisition, Periodic Variations, Reflecting Telescopes, Rotating Bodies, Light Curve, Asteroids, Nemesis Asteroid, Rotation, Photometry, Lampetia Asteroid, Period, Observations, Spin, Telescopic Observations
Scientific paper
Extensive photoelectric lightcurves of the asteroids 128 Nemesis and 393 Lampetia show for both objects extremely long rotational periods, the longest known to date for minor planets. For 393 Lampetia the combined results suggest with high probability a period of 38.7 hr with a maximal amplitude of 0.14 mag; a double-wave characteristic of the lightcurve must be assumed. For 128 Nemesis the complete double-wave lightcurve was observed and a period of 39.0 hr with a total amplitude of only 0.10 mag was deduced. Observations of 128 Nemesis confirm without doubt the presence of small-scale features of amplitude 0.01 to 0.02 mag, corresponding to small topographic features of about 15 km in height and width on the surface.
Scaltriti Franco
Schober Hans Josef
Zappala Vincent
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