Contents. planet: 7 - Uranus satellites: U1-Ariel : 80, U2-Umbriel : 70, U3-Titania : 82, U4-Oberon : 64 total number: 296 type: relative dates: 1904-1914 observatory: 662 - Lick Observatory, Mount Hamilton Reference. Aitken R.G. (1905) Observations of the satellites of Uranus in 1904 and 1905. Lick Observatory bulletin. V. 4. No. 94. P. 31-32 1905LicOB___4___31A Aitken R.G. (1909) Observations of the satellites of Mars, Saturn and Uranus. Lick Observatory bulletin. V. 5. No. 172. P. 169-173 1909LicOB___5__169A Aitken R.G. (1912) Measures of the satellites of Uranus in 1910 and 1911. Lick Observatory bulletin. V. 7. No. 207. P. 1-2 1912LicOB___7____1A Aitken R.G. (1913) Measures of the satellites of Uranus in 1914. Lick Observatory bulletin. V. 8. P. 142-143 1913LicOB___8__142A Informations. relative to: Uranus (140), U3-Titania (156) reference frame: apparent centre of frame: topocentre epoch of equinox: date time scale: Mt. Hamilton Sideral Time reduction: no information coordinates: position angle and separation diff. refraction: 1904, 1905, 1909 - excluded, 1910, 1911, 1914 - not excluded receptor: micrometric telescope: Refractor, D=36 inch observers: Aitken R.G. data included in standard data file: no Comments. no information Format. 1. Observed satellite number, obs. 2. Reference satellite number, ref. (0 for Uranus) 3. Year of the moment of observation 4. Month of the moment of observation 5. Day of the moment of observation 6. Hour of the observation 7. Minute of the observation 8. Seconde of the observation 9. P (position angle) in degrees (999.9 if P is not given) 10. S (separation) in arcsec (-99.99 if S is not given) -------------------------------------------- sat. Year Mt. Hamilton ref month Sideral Time P S obs day h m s degrees arcsec --------------------------------------------