Listar por autoría "96c56254-8abd-47e7-82c6-e5a572e5e886"
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A Geometrical Study about the Biparametric Family of Anomalies in the Elliptic Two-Body Problem with Extensions to Other Families
López Ortí, José Antonio; Marco Castillo, Francisco José; Martínez Usó, María José MDPI (2024-02)In the present paper, we efficiently solve the two-body problem for extreme cases such as those with high eccentricities. The use of numerical methods, with the usual variables, cannot maintain the perihelion passage ... -
A method to improve the computation of tidal potential in the equilibrium configuration of a close binary system
López Ortí, José Antonio; Forner Gumbau, Manuel; Barreda Rochera, Miguel Taylor & Francis (2009)A classical problem in celestial mechanics is the study of equilibrium configuration figures of extended deformable bodies. A particularly interesting case of this problem is the study of the figures of equilibrium of close ... -
A new bi-parametric family of temporal transformations to improve the integration algorithms in the study of the orbital motion
López Ortí, José Antonio; Agost Gómez, Vicente; Barreda Rochera, Miguel Elsevier (2016-02-06)One of the fundamental problems in celestial mechanics is the study of the orbital motion of the bodies in the solar system. This study can be performed through analytical and numerical methods. Analytical methods are based ... -
A note on the first-order theories of equilibrium figures of celestial bodies
López Ortí, José Antonio; Forner Gumbau, Manuel; Barreda Rochera, Miguel Taylor & Francis (2011)One of the main problems in celestial mechanics is the determination of the shape of the equilibrium configuration of celestial bodies. In this paper, a model of a fluid mass rotating in space like a rigid body will be ... -
A Note on the Use of Generalized Sundman Anomalies in the Numerical Integration of the Elliptical Orbital Motion
López Ortí, José Antonio; Marco Castillo, Francisco José; Martínez Usó, María José Hindawi Publishing Corporation (2014-09-11)The orbital motion around a central body is an interesting problem that involves the theory of artificial satellites and the planetary theories in the solar system.Nevertheless some difficult situations appearwhile studying ... -
A Study about the Integration of the Elliptical Orbital Motion Based on a Special One-Parametric Family of Anomalies
López Ortí, José Antonio; Marco Castillo, Francisco José; Martínez Usó, María José Hindawi Publishing Corporation (2014-02-24)This paper aimed to address the study of a new family of anomalies, called natural anomalies, defined as a one-parameter convex linear combination of the true and secondary anomalies, measured from the primary and the ... -
Accurate analytical and statistical approaches to reduce O-C discrepancies in the precessional parameters
Martínez Usó, María José; Marco Castillo, Francisco José; López Ortí, José Antonio The Astronomical Society of the Pacific (2009-02)The Hipparcos catalog provides a reference frame at optical wavelengths for the new International Celestial Reference System (ICRS). This new reference system was adopted following the resolution agreed at the 23rd IAU ... -
An alternative method to construct a consistent second-order theory on the equilibrium figures of rotating celestial bodies
López Ortí, José Antonio; Forner Gumbau, Manuel; Barreda Rochera, Miguel Elsevier (2020)The main objective of this work is to construct a new method to develop a consistent second-order amplitudes theory to evaluate the potential of a rotating deformable celestial body when the hydrostatic system equilibrium ... -
An improved algorithm of second order to construct consistent theories of equilibrium figures of rotating celestial bodies
López Ortí, José Antonio; Forner Gumbau, Manuel; Barreda Rochera, Miguel Elsevier (2018-08)One of the main problems in celestial mechanics is the study of the figure adopted by large deformable bodies in slow rotation around an axis with a constant angular velocity W when they reach their equilibrium ... -
An improved algorithm to develop semi-analytical planetary theories using Sundman generalized variables
López Ortí, José Antonio; Agost Gómez, Vicente; Barreda Rochera, Miguel Elsevier (2015-02)One of the main problems in celestial mechanics is the construction of analytical theories of planetary motion. The most common solution of this problem is arranged by means of Poisson series developments. These developments ... -
An improved C++ Poisson series processor with its applications
López Ortí, José Antonio; Agost Gómez, Vicente; Barreda Rochera, Miguel John Wiley and Sons (2020-12-14)One of major problems in celestial mechanics is the management of the long developments in Fourier or Poisson series used to describe the perturbed motion in the planetary system. In this work we will develop a software ... -
Application of Vector Spherical Harmonics and Kernel Regression to the Computations of OMM Parameters
Marco Castillo, Francisco José; Martínez, M. J.; López Ortí, José Antonio The American Astronomical Society (2015-04)The high quality of Hipparcos data in position, proper motion, and parallax has allowed for studies about stellar kinematics with the aim of achieving a better physical understanding of our galaxy, based on accurate ... -
Astrometria de asteroides en el Observatorio Astronómico de Valencia
López Ortí, José Antonio; López García, A.; García Cubero, Francisco; Valdés Navarro, José L.; Castro Soler, Joaquín; López Machí, R. Instituto Geográfico Nacional (1987)Con el propósito de participar en el programa internacional de observación de asteroides seleccionados, que coordina el Instituto de Astronomía Teórica de Leningrado (1), así como aportar datos de posiciones observadas de ... -
Computational tools to construct semi-analytical planetary theories
López Ortí, José Antonio; Martínez Usó, María José; Marco Castillo, Francisco José Taylor & Francis (2008)The main aim of this paper is the construction of a set of computational tools in order to improve the management of large expansions used in celestial mechanics. This package involves an iterative algorithm to develop the ... -
Design of a Mathematica package to develop the product of some spherical functions as linear combinations of themselves
Forner Gumbau, Manuel; Barreda Rochera, Miguel; López Ortí, José Antonio Wiley (2019-09)Results obtained when solving problems about atomic physics and about the potential theory show an almost spherical symmetry. These solutions can only be expressed in an exact form on a few occasions, so turning to ... -
Figures of equilibrium in close binary systems
López Ortí, José Antonio; López García, A.; López Machí, R. Kluwer Academic Publishers (1992-12)The equilibrium configurations of close binary systems are analyzed. The autogravitational, centrifugal and tidal potentials are expanded in Clairaut's coordinates. From the set of the total potential angular terms an ... -
Fixed Point Method to Analyze Differences between Hipparcos and ICRF2
Martínez Usó, María José; Marco Castillo, Francisco José; López Ortí, José Antonio Hindawi Publishing Corporation (2014-10-14) -
Fundamentos matemáticos de la Ingeniería. Parte I: Álgebra Lineal
López Ortí, José Antonio; Barreda Rochera, Miguel Universitat Jaume I (2010) -
Fundamentos matemáticos de la Ingeniería. Parte II: Cálculo Diferencial e Integral
Barreda Rochera, Miguel; López Ortí, José Antonio Universitat Jaume I (2010) -
Geometrical definition of a continuous family of time transformations generalizing and including the classic anomalies of the elliptic two-body problem
López Ortí, José Antonio; Marco Castillo, Francisco José; Martínez Usó, María José Elsevier (2016)This paper is aimed to address the study of techniques focused on the use of a family of anomalies based on a family of geometric transformations that includes the true anomaly f, the eccentric anomaly g and the secondary ...