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Influence of Apophis' spin axis variations on a spacecraft during the 2029 close approach with Earth
S. Aljbaae, J. Souchay, V. Carruba +2
Tumbling asteroids belong to a small group of objects, whose angular velocity vector is unaligned with any of its principal axes of inertia. This leads to challenging efforts to mo…
First approximation for spacecraft motion relative to (99942) Apophis
S. Aljbaae, D. M. Sanchez, A. F. B. A. Prado +4
We aim at providing a preliminary approach on the dynamics of a spacecraft in orbit about the asteroid (99942) Apophis during its Earth close approach. The physical properties from…
The dynamical environment of asteroid 21 Lutetia according to different internal models
Safwan Aljbaae, Thierry G. G. Chanut, Valerio Carruba +3
One of the most accurate models currently used to represent the gravity field of irregular bodies is the polyhedral approach. In this model, the mass of the body is assumed to be h…
Gravity field and solar component of the precession rate and nutation coefficients of Comet 67P Churyumov-Gerasimenko
Christoph Lhotka, Stefan Reimond, Jean Souchay +1
The aim of this study is first to determine the gravity field of the comet 67P Churyumov-Gerasimenko and second to derive the solar component of the precession rate and nutation co…
About the various contributions in Venus rotation rate and LOD
L. Cottereau, N. Rambaux, S. Lebonnois +1
% context heading (optional) {Thanks to the Venus Express Mission, new data on the properties of Venus could be obtained in particular concerning its rotation.} % aims heading (man…
A precise modeling of Phoebe's rotation
L. Cottereau, E. Aleshkina, J. Souchay
Although the rotation of some Saturn's satellites in spin-orbit has already been studied by several authors, this is not the case of the rotation of Phoebe, which has the particula…
Accurate free and forced rotational motions of rigid Venus
L. Cottereau, J. Souchay, S. Aljbaae
% context :The precise and accurate modelling of a terrestrial planet like Venus is an exciting and challenging topic, all the more interesting since it can be compared with that o…
Rotation of rigid Venus: a complete precession-nutation model
L. Cottereau, J. Souchay
Context: With the increasing knowledge of the terrestrial planets due to recent space probes it is possible to model their rotation with increasing accuracy. Despite that fact, an…
Impact crater formation: a simple application of solid state physics
V. Celebonovic, J. Souchay
This contribution is a first step aiming to address a general question: what can be concluded on impact craters which exist on various planetary system objects, by combining astron…