Contents. planet: 7 - Uranus satellites: U1-Ariel : 8, U2-Umbriel : 16, U3-Titania : 46, U4-Oberon : 50 total number: 120 type: absolute 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: 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: 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. Observed satellite number (N sat) 2. Year of the moment of observation 3. Month of the moment of observation 4. Day with decimals of the moment of observation 5. Hours of right ascension 6. Minutes of right ascension 7. Seconds of right ascension 8. Degrees of declination 9. Arcminutes of declination 10. Arcseconds of declination 11. O-C residuals in Right Ascension, arcsec 12. O-C residuals in Declination, arcsec 13. error of mean O-C in Right Ascension, arcsec 14. error of mean O-C in Declination, arcsec 15. standard deviation of O-C in Right Ascension, arcsec 16. standard deviation of O-C in Declination, arcsec ------------------------------------------------------------------------------------- N Year right declination O-C O-C error error dev dev sat month ascension R.A Dec R.A Dec R.A Dec day h ' '' deg ' '' arcsec arcsec arcsec arcs arcs arcs -------------------------------------------------------------------------------------