Contents. planet: 7 - Uranus satellites: U1-Ariel : 1, U1-Ariel/U4: 1, U1-Ariel/U3: 3, U2-Umbriel/U3: 3, U2-Umbriel/U4: 5, U3-Titania: 138, U4-Oberon: 84, U4-Oberon/U3: 66 total number: 301 type: relative dates: 1908-1925 observatory: 786 - U.S. Naval Observatory, Washington D.C. Reference. Hall A. (1929) Equatorial observations, 1908-1926 Publications of the United States Naval Observatory. 2d ser. vol. 12. 1929PUSNO__12____1H Informations. relative to: Uranus or other satellites reference frame: apparent centre of frame: topocentre epoch of equinox: date time scale: Washington Mean Time reduction: no information coordinates: position angle and separation diff. refraction: corrected receptor: micrometric telescope: refractor 26-inches observers: Hall, Eppes, Brown, Boeger data included in standard data file: no Comments. no information Format. 1. Observed satellite number, obs. 2. Reference satellite number, ref. (0=Uranus) 3. Year of the moment of observation 4. Month of the moment of observation 5. Day of the moment of observation 6. Hour, minute, second of the observation of P 7. P (position angle) in degrees 8. Hour, minute, second of the observation of S (99 99 99 if S is not given) 9. S (separation) in arcsec (99.99 if S is not given) ---------------------------------------------- sat. Year W.M.T. W.M.T. obs. month h m s p h m s s ref. day degrees arcsec ----------------------------------------------