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Seasonal variations of the martian CO over Hellas as observed by OMEGA/Mars Express

Bibring, J. -P.; Gondet, B.; Langevin, Y. +6 more

The OMEGA imaging spectrometer aboard Mars Express has been used to study the evolution of the CO abundance over the Hellas basin, as a function of the seasonal cycle. In spite of significant uncertainties, due to the low intensity of the (2-0) CO band at 2.3 µm, these data allow to search for spatial variations over Hellas, where the surfac…

Astrometric observations of Phobos and Deimos with the SRC on Mars Express

Oberst, J.; Neukum, G.; Hoffmann, H. +4 more

Observations of Phobos and Deimos, carried out by the SRC (Super Resolution Channel) on the Mars Express spacecraft between May 2004-April 2005, were used to determine the center-of-figure positions of the two Satellites with accuracies of 0.5-5 km (Phobos) and 1.0 km (Deimos). We find that the Phobos and Deimos orbit predictions from NASA-JPL (Je…