Contents. planet: 6 - Saturn satellites: S8 - Iapetus : 8 total number: 8 type: absolute dates: 1981-1981 observatory: 690 - Lowell Observatory, Flagstaff Reference. IAUC 3602 1981IAUC_3602____1S Informations. relative to: absolute reference frame: astrometric centre of frame: geocenter epoch of equinox: 1950.0 time scale: UTC reduction: no information coordinates: absolute diff. refraction: no information receptor: photographic telescope: 0.33-m photographic telescope observers: E. Bowell data included in standard data file: no Comments. Format. 1. Year of Observation 2. Month of Observation 3. Day of Observation with decimals (UTC). 4. Hour of right ascension, (alpha, h) 5. Minute of right ascension, (alpha, m) 6. Second of right ascension, (alpha, s) 7. Degree of declination, (delta, deg) 8. Minute of declination, (delta, ' ) 9. Second of declination, (delta, '' ) --------------------------------------------- Month alpha - 1950.0 - delta Year Day (UTC) h m s deg ' '' ---------------------------------------------