Jacobson, R. A.; Campbell, J. K.; Taylor, A. H.; Synnott, S. P.:, "The masses of Uranus and its major satellites from Voyager tracking data and earth-based Uranian satellite data". The Astronomical Journal 103 (6) [5], NASA, 2005.
nasa.gov
ssd.jpl.nasa.gov
Yeomans Donald K.:, "HORIZONS Web-Interface for Uranus Barycenter (Major Body=7)", [1],“JPL Horizons On-Line Ephemeris System”, – Select "Ephemeris Type: Orbital Elements", "Time Span: January 1, 2000 12:00 to 2000-01-02", 2014.
Williams, Dr. David R.:, "Uranus Fact Sheet", [3], NASA, 2005.
springer.com
link.springer.com
Seidelmann, P. Kenneth; Archinal, Brent A.; A'Hearn, Michael F. et al.:, “"Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements: 2006"”, [4],“Celestial Mechanics and Dynamical Astronomy 98 (3): 155–180.", 2007.
Seidelmann, P. Kenneth; Archinal, Brent A.; A'Hearn, Michael F. et al.: "Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements: 2006”, Celestial Mechanics and Dynamical Astronomy 98 (3): 155–180. [6], 2006.