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Listar por palabra clave "Reference systems"

Mostrando ítems 1-6 de 6

A 3D-Study of the residual vector field

Marco, Francisco J.; Martínez Uso, María José; López, Jose A. (Cambridge University Press, 2018-03-07)

[EN] One of the important challenges that Gaia imposes on the Astrometric Catalogs, is a careful study in everything affected by parallax. A particularly important case is the necessary linkage Gaia - HCRF - ICRF2, which ...
Global and Local Three-dimensional Studies of The Residual Vector Field from 2MASS and Hipparcos-2 Catalog

MARCO CASTILLO, FRANCISCO J.; Martínez Uso, María José; Lopez, J.A. (IOP Publishing, 2019-04)

[EN] The Gaia mission will provide a six-parameter solution for millions of stars, including a tridimensional map of our Galaxy. The estimation of distances has been made for the Tycho-Gaia Astrometric Solution (TGAS), ...
Impact on the Hipparcos2-UCAC4 geometric relation from some physical properties of the stars

Marco, Francisco J.; Martínez Uso, María José; López, Jose A. (Cambridge University Press, 2018-03-07)

[EN] The aim of this paper is the study of the impact that the consideration of different physical properties as magnitude and spectral type of stars has on the geometric relations between Hipparcos2 and UCAC4. In this ...
On the effect of ocean tides and tesseral harmonics on spacecraft flybys of the Earth

Acedo Rodríguez, Luis (Oxford University Press (OUP), 2016)

[EN] The so-called flyby anomaly has encouraged several authors to analyse in detail the minor perturbative contributions to the trajectory of spacecraft performing a flyby manoeuvre. This anomaly consist of an unexplained ...
Recovering the Vestiges of the Old Meridian Arc of Paris in the Valencian Community of Spain

Débarbat, Suzanne V.; García-Asenjo Villamayor, Luis; Baselga Moreno, Sergio; Garrigues Talens, Pascual; Navarro, Xavier (American Society of Civil Engineers, 2021-08-01)

[EN] This paper describes research carried out both to obtain the location and identify possible vestiges of the old geodetic benchmarks used by the expedition formed by French geodesists Arago and Biot and Spanish geodesists ...
Relativistic positioning: including the influence of the gravitational action of the Sun and the Moon and the Earth's oblateness on Galileo satellites

Puchades Colmenero, Neus; Arnau Córdoba, José Vicente; Fullana Alfonso, Màrius Josep (Springer-Verlag, 2021-07)

[EN] Uncertainties in the satellite world lines lead to dominant positioning errors. In the present work, using the approach presented in Puchades and Sáez (Astrophys. Space Sci. 352, 307¿320, 2014), a new analysis of these ...