Signature of Phobos’ interior structure in its gravity field and libration

  title={Signature of Phobos’ interior structure in its gravity field and libration},
  author={Sebastien Le Maistre and Attilio Rivoldini and Pascal Rosenblatt},

MMX geodesy investigations: science requirements and observation strategy

In order to investigate the origin of Phobos and Deimos, the Japanese Martian Moons eXploration (MMX) mission is scheduled for launch in 2024. MMX will make comprehensive remote-sensing measurements

A lighter core for Phobos?

Context. The origin of the Martian moons Phobos and Deimos is still poorly understood, and is the focus of intense debate. Aims. We demonstrate that a stratified internal structure of Phobos is

Mothership-Cubesat Radioscience for Phobos Geodesy and Autonomous Navigation

The knowledge of the interior structure (e.g., homogeneous, porous, or fractured) of Martian moons will lead to a better understanding of their formation as well as the early solar system. One

The second-degree gravity coefficients of Phobos from two Mars Express flybys

Several close spacecraft flybys of Phobos have been performed over the past 40 yr in order to determine the gravity field of this tiny Martian moon. In this work, the second-degree coefficients of

Cold Atom Interferometry for Enhancing the Radio Science Gravity Experiment: A Phobos Case Study

Interplanetary missions have typically relied on Radio Science (RS) to recover gravity fields by detecting their signatures on the spacecraft trajectory. The weak gravitational fields of small

Surface environment of Phobos and Phobos simulant UTPS

The Martian Moons eXploration (MMX) mission will study the Martian moons Phobos and Deimos, Mars, and their environments. The mission scenario includes both landing on the surface of Phobos to

The Formation of the Martian Moons

The origin of the natural satellites or moons of the solar system is as challenging to unravel as the formation of the planets. Before the start of the space probe exploration era, this topic of

Exploring planets and asteroids with 6DoF sensors: Utopia and realism

A 6 degrees-of-freedom (6DoF) sensor, measuring three components of translational acceleration and three components of rotation rate, provides the full history of motion it is exposed to. In Earth

Propagation and estimation of the dynamical behaviour of gravitationally interacting rigid bodies

Next-generation planetary tracking methods, such as interplanetary laser ranging (ILR) and same-beam interferometry (SBI) promise an orders-of-magnitude increase in the accuracy of measurements of



The Stickney Impact of Phobos: A Dynamical Model

Abstract Phobos, the largest moon of Mars, has dimensions typical of minor asteroids, approximately 19 × 22 × 27 km. It is probably the best studied small planetary body in the Solar System, imaged

Phobos interior structure from its gravity field

Phobos origin remains mysterious. It could be a captured asteroid, or an in-situ object co-accreted with Mars or formed by accretion from a disk of impact ejecta. Although it is not straightforward

Rotational motion of Phobos

Context. Phobos is in synchronous spin-orbit resonance around Mars, like our Moon around the Earth. As a consequence, the rotational period of Phobos is equal in average to its orbital period. The

Precise mass determination and the nature of Phobos

We report independent results from two subgroups of the Mars Express Radio Science (MaRS) team who independently analyzed Mars Express (MEX) radio tracking data for the purpose of determining

The origin of the Martian moons revisited

The origin of the Martian moons, Phobos and Deimos, is still an open issue: either they are asteroids captured by Mars or they formed in situ from a circum-Mars debris disk. The capture scenario

Excavating Stickney crater at Phobos

Stickney crater, at 9 km across, dominates the morphology of ~22 km Phobos, the larger of the two moons of Mars. The Stickney impact event had global repercussions for Phobos, including extensive