Results 101 to 110 of about 753,460 (195)

Observations of Five Major Uranian Satellites during 2013–2020 Based on Gaia DR3

The Astrophysical Journal Supplement Series
A total of 10,339 positions of the five major Uranian satellites (Ariel, Umbriel, Titania, Oberon and Miranda) were collected at the Yunnan Observatories from 2013 to 2020 with the 1.0 m astrometric reflector.
H. Y. Zhang, Y. Yu, R. C. Qiao, D. Yan, X. Cheng, K. Tang, Y. D. Mao   +6 more
doaj   +1 more source

Precise Positioning with Broadcast Ephemerides [PDF]

, 2021
Montenbruck, Oliver, Carlin, Luca, Hauschild, André   +2 more
openaire   +1 more source

Application of "Galileo High Accuracy Service" on Single-Point Positioning. [PDF]

Sensors (Basel), 2023
Angrisano A, Ascione S, Cappello G, Gioia C, Gaglione S.   +4 more
europepmc   +1 more source

Alexander's Ephemerides (117), Second edition

The article discusses the nature of the Ephemerides and the relation with the rest of the tradition on ...
Bearzot, C.
core   +1 more source

TESS Photometry and Radial-velocity Analysis of the Sub-Neptune Exoplanet π Mensae c and the Wider π Mensae Planetary System

The Astronomical Journal
Exoplanet characterization relies on precise measurements of planetary orbital and physical parameters. This is particularly important for planetary dynamics and atmospheric evolution, as orbital parameters help constrain system evolution, resolve ...
Skylar S. Larsen, Jake D. Turner, Nikole K. Lewis, Maryame El Moutamid, Diana Solano-Oropeza, Lili Alderson, V. Abby Boehm, Daniel A. Yahalomi, Emily K. Deibert, Ray Jayawardhana, Dong Lai, Adam B. Langeveld, Kyle A. Pearson   +12 more
doaj   +1 more source

Performance evaluation of near real-time GNSS precipitable water vapor retrieval using ultra-rapid ephemerides and SSR products

Frontiers in Astronomy and Space Sciences
IntroductionPrecipitable water vapor (PWV) is an important parameter for characterizing the spatiotemporal variability of atmospheric water vapor.
Feiyang Hu, Feiyang Hu, Feiyang Hu, Biyan Chen, Biyan Chen, Biyan Chen, Ning Huang, Ning Huang, Tiezhu Li, Tiezhu Li, Chaohui Chen, Chaohui Chen   +11 more
doaj   +1 more source

New ephemerides and detection of transit-timing variations in the K2-138 system using high-precision CHEOPS photometry

Astronomy & Astrophysics
Context. Multi-planet systems are a perfect laboratory for constraining planetary formation models. A few of these systems present planets that come very close to mean motion resonance, potentially leading to significant transit-timing variations (TTVs) due to their gravitational interactions. Of these systems, K2-138 represents an excellent laboratory
H. G. Vivien, S. Hoyer, M. Deleuil, S. Sulis, A. Santerne, J. L. Christiansen, K. K. Hardegree-Ullman, T. A. Lopez   +7 more
openaire   +3 more sources

Ephemerides nacionaes

, 1881
Inclui índice alphabetico das "Ephemerides Nacionaes".Blake, Sacramento. Diccionario bibliographico brazileiro. Rio de Janeiro: Imprensa Nacional, 1883-1902. v. 4, p. 271-273.Colligidas pelo Dr. J. A. Teixeira de Mello e publicadas na Gazeta de NoticiasT.

core  

Stellar Occultations by Trans-Neptunian Object Satellites: Predictions and Observations

The Planetary Science Journal
With the great success of stellar occultations in probing trans-Neptunian objects (TNOs), these observations have become ubiquitous, leading to significant advances in our knowledge of TNOs. As stellar occultation predictions have improved, it has become
Flavia L. Rommel, Benjamin Proudfoot, José L. Ortiz, Nicolás Morales, José María Gómez-Limón, Bryan J. Holler, Darin Ragozzine, Toni Santana-Ros, Pablo Santos-Sanz, Estela Fernández-Valenzuela, Francisco J. Aceituno   +10 more
doaj   +1 more source

Real-Time Detection of LEO Satellite Orbit Maneuvers Based on Geometric Distance Difference

Aerospace
Low Earth orbit (LEO) satellites, characterized by low altitudes, high velocities, and strong ground signal reception, have become an essential and dynamic component of modern global navigation satellite systems (GNSS).
Aoran Peng, Bobin Cui, Guanwen Huang, Le Wang, Haonan She, Dandan Song, Shi Du   +6 more
doaj   +1 more source