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Resource potential and planning for exploration of the Hebrus Valles, Mars

Yadav, Santosh Kumar; Srivastava, Neeraj; Sharma, Ravi

Mars is the only extraterrestrial body which could host primitive lifeforms and also has the potential to host a human base in the near future. Towards fulfilling these objectives, several remote sensing missions and rover based missions have been sent to Mars. Still, confirmation of existing or extinct life on this planet in any form has not been…

A new method to determine the gravity field of small bodies from line-of-sight acceleration data

Barriot, Jean-Pierre; Rodriguez, J. Alexis P.; Yan, Jian-Guo +2 more

We present a new method to derive line-of-sight acceleration observables from spacecraft radio tracking data. The observables can be used to estimate the mass and gravity of a natural satellite as a spacecraft flyby. The corresponding observation model adapts to one-way and two/three-way tracking modes. As a test case for method validation and app…