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Main Belt Binary Asteroidal Systems With Eccentric Mutual Orbits
F. Marchis, P. Descamps, J. Berthier +5
Using 8m-10m class telescopes and their Adaptive Optics (AO) systems, we conducted a long-term adaptive optics campaign initiated in 2003 focusing on four binary asteroid systems:…
Main Belt Binary Asteroidal Systems With Circular Mutual Orbits
F. Marchis, P. Descamps, M. Baek +5
In 2003, we initiated a long-term adaptive optics campaign to study the orbit of various main-belt asteroidal systems. Here we present a consistent solution for the mutual orbits o…
Near-Infrared Mapping and Physical Properties of the Dwarf-Planet Ceres
Benoit Carry, Christophe Dumas, Marcello Fulchignoni +5
We study the physical characteristics (shape, dimensions, spin axis direction, albedo maps, mineralogy) of the dwarf-planet Ceres based on high-angular resolution near-infrared obs…
New determination of the size and bulk density of the binary asteroid 22 Kalliope from observations of mutual eclipses
P. Descamps, F. Marchis, J. Pollock +16
In 2007, the M-type binary asteroid 22 Kalliope reached one of its annual equinoxes. As a consequence, the orbit plane of its small moon, Linus, was aligned closely to the Sun's li…
Near-UV to near-IR disk-averaged Earth's spectra from Moon's Earthshine observations
S. Hamdani, L. Arnold, C. Foellmi +5
We discuss a series of Earthshine spectra obtained with the NTT/EMMI instrument between 320nm and 1020nm with a resolution of R~450 in the blue and R~250 in the red. These ascendin…