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Updated: Dec 20, 2025

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
(20882) 2000 VH57: AN INNER MAIN-BELT BINARY ASTEROID
Brian D Warner1, Amadeo Aznar Macías2, M Serra-Ricart3
1Center for Solar System Studies-Palmer Divide Station, 446 Sycamore Ave., Eaton, CO 80615 USA.
Abstract:
CCD photometric observations of the inner main-belt asteroid (20882) 2000 VH57 were made from 2018 Sept. 15 through Oct. 20. Analysis of the data showed that the asteroid is binary with a primary rotational period of 2.5586 hr and a satellite orbital period of 32.81 hr. Mutual eclipse/occultation events indicate a lower limit on the secondary-to-primary mean diameter ratio (Ds/Dp) of 0.23. During the period of observations, the primary and secondary lightcurves evolved as the viewing aspect changed. In particular, the depth of the secondary event increased significantly towards the end of the observations.
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