Contents. planet: 7 - Uranus satellites: U20 - Sycorax : 1, U23 - Margaret: 2 total number: 3 type: absolute dates: 1999-2004 observatory: 309 - Cerro Paranal 568 - Mauna Kea Reference. Minor Planet Circular 38967, 54697 Informations. relative to: absolute reference frame: astrometric centre of frame: topocentre epoch of equinox: J2000 time scale: UTC reduction: no information coordinates: absolute diff. refraction: no information receptor: CCD telescope: 309 - ESO 8.2-m UT4 Telescope, ESO 8.2-m UT3 Telescope, ESO GLT UT-1 reflector 568 - 3.6-m Canada-France-Hawaii telescope observers: 309 - J.-M.Petit, B.Gladman, P.Rousselot, O.Mousis, 568 - J. J. Kavelaars, B. Gladman, J. M. Petit and H. Scholl data included in standard data file: no Comments. These data were missed previously Format. 1. Number of satellite (N sat): 17 - U17 - Sycorax 2. Year of the moment of observation 3. Month of the moment of observation 4. Day of the moment of observation with decimals 5. Hour of right ascension (alpha, h) 6. Minute of right ascension (alpha, m) 7. Second of right ascension (alpha, s) 8. Degree of declination (delta, deg) 9. Minute of declination (delta, ' ) 10. Second of declination (delta, '' ) 11. Code of observatory, N obs 12. The observed magnitude, mag (* if not given) 13. The band in which the measurement was made, band (* if not given) 14. Number of the Minor Planet Circular where the observation is published. ----------------------------------------------------------------------- N Year alpha delta N obs sat month day with mag MPC decimals h m s deg ' '' band number -----------------------------------------------------------------------