Contents. planet: 7 - Uranus satellites: U1-Ariel : 1, U3-Titania : 29, U4-Oberon : 28 total number: 58 type: relative dates: 1920-1922 observatory: 786 - U.S. Naval Obs., Washington Reference. Hall Asaph Jr. (1921) Observations of the satellites of Uranus. Astronomical Journal. V. 34. N. 793. P. 5-6. 1921AJ_____34____5H Hall Asaph Jr. (1922) Observations of the satellites of Uranus, 1921. Astronomical Journal. V. 34. N. 802. P. 92-92. 1922AJ_____34___92H Hall A., Bower E. C. (1923) Observations of satellites of Uranus, 1922. Astronomical Journal. V. 35. N. 830. P. 116-116. 1923AJ_____35__116B Informations. relative to: planet reference frame: apparent centre of frame: topocentre epoch of equinox: date time scale: G.M.T. reduction: no information coordinates: position angle and separation diff. refraction: not excluded receptor: micrometric telescope: Refractor, D=26 inch observers: Hall A.Jr., Bower E.C. data included in standard data file: no Comments. no information Format. 1. Observed satellite number, obs. 2. Year of the moment of observation 3. Month of the moment of observation 4. Day of the moment of observation 5. Hour of the observation 6. Minute of the observation 7. Seconde of the observation 8. P (position angle) in degrees 9. Hour of the observation 10. Minute of the observation 11. Seconde of the observation 12. S (separation) in arcsec ------------------------------------------------ sat Year G.M.T. G.M.T. obs month h m s P h m s S day degrees arcsec ------------------------------------------------