Contents. planet: 7 - Uranus satellites: U1-Ariel : see reference satellites U2-Umbriel : 5, U3-Titania : 19, U4-Oberon : 62 total number: 86 type: relative dates: 2007-2011 observatory: 084 - Pulkovo References. Roschina E. A., Izmailov I. S., Kiseleva T. P. Astrometric observations of uranian satellites with 26-inch refractor in 2007-2011. Astronomicheskij vestnik (Solar System Research). 2015. V. 49. N 2. P. 1–6. Informations. relative to: reference satellites: U1-Ariel: 17, U2-Umbriel : 28, U3-Titania : 41 reference frame: astrometric centre of frame: topocentre epoch of equinox: J2000 time scale: UTC reduction: no information coordinates: differences in rigth ascension and declination diff. refraction: no information receptor: CCD telescope: 26-inch refractor observers: Roschina E. A., Izmailov I. S., Kiseleva T. P. data included in standard data file: no Comments. no information Format. 1. N1, Number of observed satellite 2. N2, Number of reference satellite 3. Year of the moment of observation 4. Month of the moment of observation 5. Day with decimals of the momentf observation 6. DRA Difference in Rigth Ascension J2000, arcsec 7. DDE Difference in Declination J2000, arcsec 8. (O-C)DRA O-C residuals in Right Ascension, arcsec 9. (O-C)DDE O-C residuals in Declination, arcsec 10. eDRA error of mean O-C in Right Ascension, arcsec 11. eDDE error of mean O-C in Declination, arcsec 12. sDRA standard deviation of O-C in Right Ascension, arcsec 13. sDDE standard deviation of O-C in Declination, arcsec --------------------------------------------------------------------------- N N Year DRA DDE (O-C) (O-C) eDRA eDDE sDRA sDDE 1 2 month DRA DDE day arcsec arcsec arcsec arcsec arcsec arcs arcs arcsec ---------------------------------------------------------------------------