CCD ASTROMETRIC OBSERVATIONS OF URANIAN SATELLITES

Astrometric positions of the five largest satellites are given for the oppositions of Uranus for the years 1989 to 1994. These positions wer e measured on 368 CCD frames obtained at the Cassegrain focus of a 1.6 m reflector. They are compared with the theoretically calculated posi tions from GUST86 (Laskar & Jacobson 1987). The observed minus calcula ted residuals referred to Oberon have standard deviations of the order of 0.'' 05 for the three greatest Uranian satellites and 0.'' 07 for Miranda. These residuals are comparable to the best available in the l iterature.