Contents. planet: 8 - Neptune satellites: N2-Nereid :7 total number: 7 type: absolute dates: 1949-1949 observatory: 711 - McDonald Observatory, Fort Davis Reference. Harris D., and Van Biesbroeck G. (1949) Positions and preliminary orbit of Nereid, Neptune's second satellite. Astronomical Journal. V. 54. P. 197-198. 1949AJ_____54__197H Informations. relative to: absolute reference frame: astrometric centre of frame: topocentre epoch of equinox: 1949.0 time scale: UTC reduction: Yale Catalogue coordinates: absolute diff. refraction: no information receptor: photographic telescope: Reflector, D = 82 inch observers: Harris D., Van Biesbroeck G. data included in standard data file: no Comments. The satellite position refer to the system of the Yale Catalogue. The comparison with the GC shows the small difference Yale minus GC +0.002 s and -0.16'' wich was neglected. Format. 1. Number of satellite (N sat), 2 - Nereid 2. Year of the moment of observation 3. Month of the moment of observation 4. Day of the moment of observation with decimals 5. Hour of right ascension (alpha, h) 6. Minute of right ascension (alpha, m) 7. Second of right ascension (alpha, s) 8. Degree of declination (delta, deg) 9. Minute of declination (delta, ' ) 10. Second of declination (delta, '' ) ---------------------------------------------------- N Year UT alpha delta sat. month day with decimals h m s deg ' '' ----------------------------------------------------