Bayesian test of Brans-Dicke theories with planetary ephemerides: Investigating the strong equivalence principle [PDF]
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 Brans-Dicke case, with an emphasis on the issue of the strong equivalence principle (SEP).
Vincenzo Mariani+4 more
arxiv +3 more sources
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations [PDF]
The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ...
A. Kokori+216 more
doaj +2 more sources
Bayesian test of the mass of the graviton with planetary ephemerides [PDF]
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 non-null graviton mass -- by considering its impact on planetary orbits.
Vincenzo Mariani+4 more
arxiv +3 more sources
Testing theories of gravity with planetary ephemerides [PDF]
We describe here how planetary ephemerides are built in the framework of General Relativity and how they can be used to test alternative theories. We focus on the definition of the reference frame (space and time) in which the planetary ephemeris is ...
Agnès Fienga, Olivier Minazzoli
doaj +2 more sources
Effect of using different satellite ephemerides on GPS PPP and post processing techniques
The orbital error is one of the errors in GPS which affect the accuracy of GPS positioning. In this research GPS broadcast, ultra-rapid, rapid and precise satellite ephemerides are used for processing different baseline lengths among some CORS stations ...
Khaled Mahmoud Abdel Aziz+1 more
doaj +2 more sources
BDS-3 was formally put into service on July 31, 2020, and now along with BDS-2 provides the positioning, navigation and timing services. In this contribution, different techniques of dual-frequency absolute positioning using the fully serviceable BDS-2 ...
Shengnan Liu, Shaolin Zhu, Jian Zhang
doaj +2 more sources
Revisiting the Kepler field with TESS: Improved ephemerides using TESS 2min data [PDF]
Up to date planet ephemerides are becoming increasingly important as exoplanet science moves from detecting exoplanets to characterising their architectures and atmospheres in depth. In this work ephemerides are updated for 22 Kepler planets and 4 Kepler planet candidates, constituting all Kepler planets and candidates with sufficient signal to noise ...
M. Battley+3 more
arxiv +3 more sources
Evolution of INPOP planetary ephemerides and Bepi-Colombo simulations [PDF]
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 $\dot{\mu}/\mu$.
A. Fienga+7 more
arxiv +3 more sources
Securing the legacy of TESS through the care and maintenance of TESS planet ephemerides [PDF]
Much of the science from the exoplanets detected by the TESS mission relies on precisely predicted transit times that are needed for many follow-up characterization studies. We investigate ephemeris deterioration for simulated TESS planets and find that the ephemerides of 81% of those will have expired (i.e.
D. Dragomir+18 more
arxiv +3 more sources
Determination of Orbital Elements and Ephemerides using the Geocentric Laplace’s Method
This paper presents a methodology for Initial Orbit Determination (IOD) based on a modification of the Laplace’s geocentric method. The orbital elements for Near-Earth asteroids (1864) Daedalus, 2003 GW, 2019 JA8, a Hungaria-type asteroid (4690 ...
Daniela Espitia+2 more
doaj +2 more sources