CCD observations of Nereid and a new orbital determination

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrometry, Planets And Satellites: Nereid

Scientific paper

229 CCD positions of Nereid taken between 1993 and 1998 are presented. Many of the observations were taken near the periapsis. Considering also the other published positions we have a good distribution of the observations on the eccentric orbit of the satellite. Using a numeric integration method we fitted all these observations in order to determine one state vector for the orbit. The observed minus calculated standard deviation for all observations is 0.23", and for our observations it is 0.16". Based on observations made at Laboratorio Nacional de Astrofisica/CNPq/MCT-Itajuba-Brazil. Please send offprint requests to C.H. Veiga. Tables 1 and 2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

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