Evolution of INPOP planetary ephemerides and Bepi-Colombo simulations

Abstract

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 models for the Sun core rotation. We also present new evaluations of possible GRT violations with the PPN parameters $\beta$,$\gamma$ and $\dot{\mu }/\mu$. With a new method for selecting acceptable alternative ephemerides we provide conservative limits of about $7.16\times 10^{-5}$ and $7.49\times 10^{-5}$ for $\beta -1$ and $\gamma -1$ respectively using the present day planetary data samples. We also present simulations of Bepi-Colombo range tracking data and their impact on planetary ephemeris construction. We show that the use of future BC range observations should improve these estimates, in particular $\gamma$. Finally, interesting perspectives for the detection of the Sun core rotation seem to be reachable thanks to the BC mission and its accurate range measurements in the GRT frame.

arXiv commentProceedings of the IAU Symposium 364 "Multi-scale dynamics of space objects"

References in corpus (12)

• INPOP08, a 4-D planetary ephemeris: From asteroid and time-scale computations to ESA Mars Express and Venus Express contributions
• Helioseismic determination of the solar gravitational quadrupole moment
• Asymptotic g modes: Evidence for a rapid rotation of the solar core
• Tests of General relativity with planetary orbits and Monte Carlo simulations
• Constraining the mass of the graviton with the planetary ephemeris INPOP
• Fragile detection of solar g modes by Fossat et al
• Testing General Relativity in the Solar System: present and future perspectives
• Constraint on the Yukawa suppression of the Newtonian potential from the planetary ephemeris INPOP19a
• Searching for g modes: Part II. Unconfirmed g-mode detection in the power spectrum of the time series of round-trip travel time
• A Critical Evaluation of Recent Claims Concerning Solar Rotation
• Some glimpses from helioseismology at the dynamics of the deep solar interior
• Helioseismology: a fantastic tool to probe the interior of the Sun

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• Testing the mass of the graviton with Bayesian planetary numerical ephemerides B-INPOP
• A new multiple-arc model of the resonant Kuiper belt objects -- Plutinos
• Post-Newtonian Constraints on Scalar-Tensor Gravity