Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..963p&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 93, April 1987, p. 963-967.
Astronomy and Astrophysics
Astronomy
20
Astrometry, Astronomical Spectroscopy, Charge Coupled Devices, Miranda, Uranus Satellites, Error Analysis, Orbit Calculation, Uranus, Satellites, Miranda, Astrometry, Earth-Based Observations, Data, Ccd Methods, Comparisons, Ephemerides, Equipment, Data Reduction, Analysis, Procedure, Technique
Scientific paper
An 800 x 800 CCD was applied to the astrometry of Uranus's fifth moon, Miranda. The methods of observation, measurement, and reduction are described, and 76 x, y observations of Miranda made between 1981 and 1985 are presented. From comparisons of the observations with the latest Jet Propulsion Laboratory ephemeris of Miranda, it is shown that the CCD will yield observations with an external precision of + or - 0.10 arcsec, comparable to the best of the photographic techniques. In error analysis, a small systematic error was detected, and it is demonstrated that neither the CCD chip nor the atmosphere contributed perceptibly to it. On the contrary, there was some indication that the problem was orbital, and due, indirectly, to the systematic effect of the halo light on the photographic observations used in the orbital determination.
Hershey John L.
Pascu Dan
Santoro E. J.
Schmidt Ricardo E.
Seidelmann Kenneth P.
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