Lightcurves and phase relations of asteroid 55 Pandora

Astronomy and Astrophysics – Astronomy

Scientific paper

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Asteroids, Light Curve, Phase Shift, Albedo, Infrared Astronomy Satellite, Look Angles (Tracking), Photoelectric Emission

Scientific paper

Photoelectric observations of the asteroid 55 Pandora were carried out in Feb. - Mar. 1989 (6 nights) in range of phase angles Delta alpha = (2.5 - 1.4) deg, and in Sep. - Nov. 1991 (15 nights) Delta alpha = (0.5 - 16.3) deg. Average amplitudes of lightcurves in these oppositions are 0.22 m and 0.10 m, respectively. The value of linear phase coefficients and the absence of spike-effect of alpha less than 2 deg indicate that Pandora is a typical M-asteroid and the high albedo measured by IRAS-satellite is not real.

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