Precise disciplining of a chip-scale atomic clock using PPP with broadcast ephemerides
GPS Solutions, 2023 Over the last decade, chip-scale atomic clocks (CSACs) have emerged as stable time and frequency references with small size, weight, and power (SWaP).
F. Kunzi, O. Montenbruck
semanticscholar +1 more source
Centaurus X-3 orbital ephemerides using Insight-HXMT, RXTE, Swift/BAT, and NuSTAR observations
Astronomy & Astrophysics, 2023 Centaurus X-3 (Cen X-3) is the first X-ray pulsar discovered and has been studied for decades by multiple facilities, allowing for accurate measurements of the decay rate of the orbital period of the binary system.
M. Klawin +7 more
semanticscholar +1 more source
V1298 Tau with TESS: Updated Ephemerides, Radii, and Period Constraints from a Second Transit of V1298 Tau e [PDF]
Astrophysical Journal Letters, 2021 V1298 Tau is a young (20–30 Myr) solar-mass K star hosting four transiting exoplanets with sizes between 0.5 and 0.9 R J. Given the system’s youth, it provides a unique opportunity to understand the evolution of planetary radii at different separations ...
A. Feinstein +5 more
semanticscholar +1 more source
Evolution of INPOP planetary ephemerides and Bepi-Colombo simulations [PDF]
Proceedings of the International Astronomical Union, 2021 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.
A. Fienga +7 more
semanticscholar +1 more source
Precise point positioning with GPS and Galileo broadcast ephemerides
GPS Solutions, 2021 For more than 20 years, precise point positioning (PPP) has been a well-established technique for carrier phase-based navigation. Traditionally, it relies on precise orbit and clock products to achieve accuracies in the order of centimeters.
L. Carlin, A. Hauschild, O. Montenbruck
semanticscholar +1 more source
Refining the Transit-timing and Photometric Analysis of TRAPPIST-1: Masses, Radii, Densities, Dynamics, and Ephemerides [PDF]
The Planetary Science Journal, 2020 We have collected transit times for the TRAPPIST-1 system with the Spitzer Space Telescope over four years. We add to these ground-based, HST, and K2 transit-time measurements, and revisit an N-body dynamical analysis of the seven-planet system using our
E. Agol +34 more
semanticscholar +1 more source
Precise real‐time navigation of LEO satellites using GNSS broadcast ephemerides
Navigation, 2021 The availability of orbit information with high precision and low latency is a key requirement for many Earth-observation missions, predominantly in the field of radio occultation.
A. Hauschild, O. Montenbruck
semanticscholar +1 more source
Modeling the Uncertainties of Solar System Ephemerides for Robust Gravitational-wave Searches with Pulsar-timing Arrays [PDF]
Astrophysical Journal, 2020 The regularity of pulsar emissions becomes apparent once we reference the pulses’ times of arrivals to the inertial rest frame of the solar system.
M. Vallisneri +68 more
semanticscholar +1 more source
Revisiting the 2PN Pericenter Precession in View of Possible Future Measurements
Universe, 2020 At the second post-Newtonian (2PN) order, the secular pericenter precession ω ˙ 2 PN of either a full two-body system made of well-detached non-rotating monopole masses of comparable size and a restricted two-body system composed of a point
Lorenzo Iorio
doaj +1 more source
4 Ephemerides (Ephemerides) [PDF]
Transactions of the International Astronomical Union, 1991 This report covers the period from 1 July 1987 to 30 June 1990. The ephemerides that have been published during this period have made use of the system of astronomical constants adopted at the 16th General Assembly of the IAU in Grenoble. At the same time that the use of the FK5 system on the J2000 epoch is increasing and catalogues are becoming ...
openaire +1 more source