Contents. planet: 7 - Uranus satellites: U1-Ariel : 3, U2-Umbriel : 4, U3-Titania : 7, U4-Oberon : 10 total number: 24 type: absolute dates: 1980-1980 observatory: 809 - European Southern Observatory, La Silla Reference. Debehogne H., Freitas-Mourao R. R., Vieira G. (1981) Positions of Uranus and four satellites in 1980 obtained at ESO La-Silla. Acta Astronomica. V. 31. P. 391. 1981AcA____31__391D Informations. relative to: absolute reference frame: astrometric centre of frame: topocentre epoch of equinox: B1950 time scale: UTC reduction: Catalogue SAO coordinates: absolute diff. refraction: no information receptor: photographic telescope: Astrograph GPO, D=40 cm, F= 4 m. observers: Debehogne H., Freitas-Mourao R. R., Vieira G. data included in standard data file: no Comments. no information Format. 1. Number of satellite (0 for Uranus) 2. Number of plate 3. Year of the moment of observation 4. Month of the moment of observation 5. Day of the moment of observation with decimals 6. Hour of right ascension (alpha, h) 7. Minute of right ascension (alpha, m) 8. Second of right ascension (alpha, s) 9. Degree of declination (delta, deg) 10. Minute of declination (delta, ' ) 11. Second of declination (delta, '' ) --------------------------------------------------------- N Year alpha delta sat N month plate day h m s deg ' '' ---------------------------------------------------------