0000000000328791

AUTHOR

J. M. Martinez Gonzalez

showing 2 related works from this author

Orbit determination and errors of a star catalogue

1995

Abstract We obtain Ceres orbit taking into account all perturbations and applying correction of phase effect to observations. More than 3000 observations have been used and the results agree with other determinations. We have also investigated the influence of systematic errors of a star catalogue on the observations and its effect on final elements. To that aim, a simulation procedure has been applied to Ceres observations, including different laws for errors of star catalogue versus spherical coordinates. The best relations have been applied to real observations of Ceres, in order to obtain elements and star catalogue corrections. Preliminary results of these calculations are presented.

PhysicsSystematic errorSpherical coordinate systemAstronomyA* search algorithmAstronomy and AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsStar cataloguelaw.inventionSpace and Planetary SciencelawOrbit (dynamics)Astrophysics::Earth and Planetary AstrophysicsOrbit determinationAstrophysics::Galaxy AstrophysicsPlanetary and Space Science
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Star Image Identification and Characterization on Astrographic Plates

1994

The automatic identification and characterization of star images has great value for the preliminary analysis and measurement of astrographic plates. Our group at Valencia Observatory is using a small 2-D stage and a CCD camera under computer control to perform systematic measurements of bright asteroid plates. We are also applying this method to the processing of astrographic plates with crowded stellar fields and non-stellar objects in collaboration with the Pulkovo Observatory.

Ccd cameraAstrophysics::Instrumentation and Methods for AstrophysicsAstronomyAstrophysics::Cosmology and Extragalactic AstrophysicsStar (graph theory)Preliminary analysisComputer controlObservatoryAsteroidImage identificationAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary AstrophysicsAstrophysics::Galaxy AstrophysicsGeology
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