Contents. planet: 8 - Neptune satellites: N1-Triton : 4 total number: 4 type: relative dates: 1848 observatory: 992 - Liverpool References. Lassell, William (1849) Observations of Lassell's satellite of Neptune. Monthly Notices of the Royal Astronomical Society. V. 9. P. 103. 1849MNRAS___9__103L Informations. relative to: planet reference frame: apparent centre of frame: topocentre epoch of equinox: date time scale: Greenwich M. T. reduction: no information coordinates: position angle and separation diff. refraction: no information receptor: micrometric telescope: no information observers: Lassell data included in standard data file: no Comments Format. 1. Year of the moment of observation 2. Month of the moment of observation 3. Day of the moment of observation with decimals 4. P (position angle) in degrees (999 if not given) 5. S (separation) in arcsec (-99.99 if not given) ----------------------------- Year G.M.T. P month deg. S day arcsec -----------------------------