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23 papers · 1 filter
Boosting decision trees for Main Belt Asteroid selection in planetary ephemerides: an alternative model
Vincenzo Mariani, Agnès Fienga, Zachary Murray +2
One of the main bottleneck in assessing the accuracy of Mars orbit is the unknown value of the asteroids in the Main Asteroid Belt. Nowadays a modeling with 343 asteroids as point…
Lunar References Systems, Frames and Time-scales in the context of the ESA Programme Moonlight
Agnes Fienga, Nicolas Rambaux, Krzysztof Sosnica
Lunar reference systems represent a fundamental aspect of lunar exploration. This paper presents a review of the topic in the context of the ESA lunar programme, MoonLight. This pa…
Coupled geophysical and thermal constraints link between Mars basal molten layer and the planet viscosity profile
Alex Guinard, Agnes Fienga, Anthony Memin +1
Computing the tidal deformations of Mars, we explored various Mars internal structures by examining profiles that include or exclude a basal molten layer within the mantle and a so…
Bayesian test of Brans-Dicke theories with planetary ephemerides: Investigating the strong equivalence principle
Vincenzo Mariani, Olivier Minazzoli, Agnès Fienga +2
Context: We are testing the Brans-Dicke class of scalar tensor theories with planetary ephemerides. Aims: In this work, we apply our recently proposed Bayesian methodology to the B…
Bayesian test of the mass of the graviton with planetary ephemerides
Vincenzo Mariani, Agnès Fienga, Olivier Minazzoli +2
In this work, we investigated Bayesian methodologies for constraining in the Solar System a Yukawa suppression of the Newtonian potential -- which we interpret as the effect of a n…
Viscosity contrasts in the Venus mantle from tidal deformations
Christelle Saliby, Agnes Fienga, Arthur Briaud +2
The tidal deformations of a planet are often considered as markers of its inner structure. In this work, we use the tide excitations induced by the Sun on Venus for deciphering the…
Interplanetary Laser Tri-lateration Network: simulation with INPOP planetary ephemerides
Agnès Fienga
This study is done in the context of the project titled Interplanetary Laser Tri-lateration Network (ILTN) proposed by \cite{2018P&SS..153..127S} and investigated more in details b…
Constraints on the lunar core viscosity from tidal deformation
Arthur Briaud, Agnès Fienga, Daniele Melini +8
We use the tidal deformations of the Moon induced by the Earth and the Sun as a tool for studying the inner structure of our satellite. Based on measurements of the degree-two tida…
Gaia-DR2 asteroid observations and INPOP planetary ephemerides
P. Deram, A. Fienga, A. K. Verma +2
We used the INPOP19a planetary ephemerides to perform the orbital adjustment of 14099 asteroids based on Gaia-DR2 observations, and compare for 23 of them the resulting orbits to r…
The five largest satellites of Uranus: astrometric observations spread over 29 years at the Pico dos Dias Observatory
Julio I. B. Camargo, Carlos H. Veiga, Roberto Vieira-Martins +2
We present the astrometry of the five largest satellites of Uranus from observations spread over almost three decades with photographic plates and CCDs (mainly), taken at the Pico…
Evolution of INPOP planetary ephemerides and Bepi-Colombo simulations
A. Fienga, L. Bigot, D. Mary +5
We give here a detailed description of the latest INPOP planetary ephemerides INPOP20a. We test the sensitivity of the Sun oblateness determination obtained with INPOP to different…
Exogenous origin of hydration on asteroid (16) Psyche: The role of hydrated asteroid families
C. Avdellidou, M. Delbo', A. Fienga
Asteroid (16) Psyche, that for long was the largest M-type with no detection of hydration features in its spectrum, was recently discovered to have a weak 3 micron band and thus it…
Constraints on the location of a possible 9th planet derived from the Cassini data
A. Fienga, J. Laskar, H. Manche +1
To explain the unusual distribution of Kuiper Belt objects, several authors have advocated the existence of a super-Earth planet in the outer solar system. It has recently been pro…
Historical Reflections on the Work of IAU Commission 4 (Ephemerides)
George H. Kaplan, John A. Bangert, Agnes Fienga +10
As part of a reorganization of the International Astronomical Union (IAU), Commission 4 (Ephemerides) went out of existence after the IAU General Assembly in August 2015. This pape…
Tests of General relativity with planetary orbits and Monte Carlo simulations
A. Fienga, J. Laskar, P. Exertier +2
Based on the new developped planetary ephemerides INPOP13c, determinations of acceptable intervals of General Relativity violation in considering simultaneously the PPN parameters…
INPOP new release: INPOP13b
A. Fienga, H. Manche, J. Laskar +2
Based on the use of MESSENGER radiotracking data in the construction of new Mercury ephemerides (Verma et al. 2014) a new planetary ephemerides INPOP13b was built including Mercury…
Use of MESSENGER radioscience data to improve planetary ephemeris and to test general relativity
Ashok Verma, Agnes Fienga, Jacques Laskar +2
The current knowledge of Mercury orbit has mainly been gained by direct radar ranging obtained from the 60s to 1998 and by five Mercury flybys made by Mariner 10 in the 70s, and ME…
INPOP new release: INPOP10e
A. Fienga, H. Manche, J. Laskar +2
The INPOP ephemerides have known several improvements and evolutions since the first INPOP06 release (Fienga et al. 2008) in 2008. In 2010, anticipating the IAU 2012 resolutions, a…
The INPOP10a planetary ephemeris and its applications in fundamental physics
A. Fienga, J. Laskar, P. Kuchynka +5
Compared to the previous INPOP versions, the INPOP10a planetary and lunar ephemeris has several improvements. For the planets of our solar system, no big change was brought in the…
La2010: A new orbital solution for the long term motion of the Earth
J. Laskar, A. Fienga, M. Gastineau +1
We present here a new solution for the astronomical computation of the orbital motion of the Earth spanning from 0 to -250 Myr. The main improvement with respect to the previous nu…
Planetary and Lunar ephemerides, INPOP10A
A. Fienga, H. Manche, P. Kuchynka +2
The Planetary and Lunar ephemerides INPOP10a version has several improvements in the fitting process, the data sets used in the fit and in the general features of the solution. No…
A ring as a model of the main belt in planetary ephemerides
P. Kuchynka, J. Laskar, A. Fienga +1
We assess the ability of a solid ring to model a global perturbation induced by several thousands of main-belt asteroids. The ring is first studied in an analytical framework that…
INPOP08, a 4-D planetary ephemeris: From asteroid and time-scale computations to ESA Mars Express and Venus Express contributions
A. Fienga, J. Laskar, T. Morley +6
The latest version of the planetary ephemerides developed at the Paris Observatory and at the Besancon Observatory is presented here. INPOP08 is a 4-dimension ephemeris since it pr…