New evidence for the effect of phase angle on asteroid lightcurve shape - 21 Lutetia

Details New evidence for the effect of phase angle on asteroid lightcurve shape - 21 Lutetia New evidence for the effect of phase angle on asteroid lightcurve shape - 21 Lutetia

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...130..208z&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 130, no. 1, Jan. 1984, p. 208-210. Research supported by the Consiglio Naziona

Astronomy and Astrophysics

Astronomy

17

Asteroids, Astronomical Photometry, Light Curve, Phase Shift, Planetary Rotation, Electrophotometry, Shapes, Asteroids, Lightcurves, Phase Angles, Shape, Astronomy, Observations, 21 Lutetia, Rotation, Periods, Comparisons, Photometry

Scientific paper

New observations of the asteroid 21 Lutetia, obtained in 1981 and 1983 apparitions, are presented. They allowed a definitive value of the rotation period (8h.17) to be deduced, instead of the previously adopted value of 6h.133. A comparison between 1962 and 1981 lightcurves, obtained at nearly the same ecliptic coordinates, revealed new convincing evidence for the phase angle effect on the lightcurve shape. This effect is very important for understanding asteroid morphology, but it sometimes leads to erroneous determinations of rotation periods.

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