TESS Timings of 31 Hot Jupiters with Ephemeris Uncertainties [PDF]
The Astrophysical Journal Supplement Series, 2023 A precise transit ephemeris serves as the premise for follow-up exoplanet observations. We compare TESS Object of Interest (TOI) transit timings of 262 hot Jupiters with the archival ephemeris and find 31 of them having TOI timing offsets, among which ...
Su-Su Shan +10 more
doaj +2 more sources
Departure from the constant-period ephemeris for the transiting exoplanet WASP-12 b [PDF]
A&A 588, L6 (2016), 2016 Most hot Jupiters are expected to spiral in towards their host stars due to transfering of the angular momentum of the orbital motion to the stellar spin. Their orbits can also precess due to planet-star interactions.
Bukowiecki, Ł. +13 more
core +3 more sources
La2010: A new orbital solution for the long term motion of the Earth [PDF]
, 2011 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 numerical solution La2004 (Laskar et al.
A. Fienga +50 more
core +11 more sources
Real-Time Precise Point Positioning Method Considering Broadcast Ephemeris Discontinuities [PDF]
NavigationWith advancements in the broadcast ephemeris accuracy of global navigation satellite systems (GNSSs), precise point positioning based on broadcast ephemeris (BE-PPP) is gradually showing promising prospects.
Quanrun Cheng +3 more
doaj +2 more sources
Performance of Multi-GNSS in the Asia-Pacific Region: Signal Quality, Broadcast Ephemeris and Precise Point Positioning (PPP) [PDF]
Remote Sensing, 2022 Since BeiDou Navigation Satellite System (BDS) and Japan’s Quasi-Zenith Satellite System (QZSS) have more visible satellites in the Asia-Pacific region, and navigation satellites of Global Positioning System (GPS), Galileo satellite navigation system ...
Mengyuan Li +4 more
doaj +2 more sources
Thermospheric mass density measurement from precise orbit ephemeris
Geodesy and Geodynamics, 2016 Atmospheric drag, which can be inferred from orbit information of low-Earth orbiting (LEO) satellites, provides a direct means of measuring mass density.
Junyu Chen, Jizhang Sang
doaj +2 more sources
A Three-Step Method for Determining Unhealthy Time Period of GPS Satellite Orbit in Broadcast Ephemeris and Its Preliminary Applications for Precise Orbit Determination [PDF]
Remote Sensing, 2019 Abnormal information of satellite orbits inevitably appears in the broadcast ephemeris. Failure to obtain unhealthy information on GPS satellite orbits in precise orbit determination (POD) degrades GPS service performance.
Fei Ye +4 more
doaj +2 more sources
A new interpolation method based on satellite physical character in using IGS precise ephemeris
Geodesy and Geodynamics, 2014 Due to the deficiency of sliding Lagrange polynomial interpolation, the author proposes a new interpolation method, which considers the physical character of satellite movement in coordinate transformation and reasonable selection of interpolation ...
Liu Weiping, Hao Jinming
doaj +2 more sources
Broadcast Ephemeris with Centimetric Accuracy: Test Results for GPS, Galileo, Beidou and Glonass
Remote Sensing, 2021 Here we test the capability of the Broadcast Ephemeris Message, in both its GPS-like (Keplerian ellipse with secular and periodic perturbations) and Glonass-like (numerical integration of a 9D state vector) formats, to reproduce a corresponding precise ...
Alessandro Caporali, Joaquin Zurutuza
doaj +1 more source
Sensors, 2020 At present, Global Position System (GPS) navigation ephemeris mainly broadcasts satellite orbits with meter-level precision for standard point positioning and precise relative positioning. With the rapid development of real-time precise point positioning
Dehai Li +5 more
doaj +1 more source