Contents. planet: 8 - Neptune satellites: N2-Nereid : 44 total number: 44 type: relative dates: 1949-1969 observatory: 711 - McDonald Observatory, Fort Davis Reference. Van Biesbroeck G. (1951) The orbit of Nereid, Neptune's second satellite. Astronomical Journal. V. 56. P. 110-111. 1951AJ_____56__110V Van Biesbroeck G. (1957) The mass of Neptune from a new orbit of its second satellite Nereid. Astronomical Journal. V. 62. P. 272-274. 1957AJ_____62__272V Rose Lance E. (1974) Orbit of Nereid and the mass of Neptune. Astronomical Journal. V. 79. P. 489-490. 1974AJ_____79__489R Informations. relative to: relative reference frame: astrometric centre of frame: topocentre epoch of equinox: 1950.0 time scale: ET reduction: no information coordinates: X, Y diff. refraction: no information receptor: photographic telescope: Reflector, D = 82 inch observers: 1 - Kuiper 2 - Van Biesbroeck G. 3 - Page data included in standard data file: no Comments. 1. The observations made in 1967-1969 are published in Rose L. E. (1974) from Private communication (1970) by Van Biesbroeck G. 2. Time scales for the same observations published by Van Biesbroeck G. and Rose L. E. are different. Format. 1. Number of satellite (N sat) 2. Year of the moment of observation 3. Month of the moment of observation 4. Day of the moment of observation with decimals, scale ET as given in Rose L. E. (1974) 5. Day of the moment of observation with decimals, scale UT corrected for the light-time of the planet as given in Van Biesbroeck G. (1951) and Van Biesbroeck G. (1957), but 0.0 for the observations in 1967-1969. 6. X, arcsec 7. Y, arcsec 8. N observer (1 - Kuiper, 2 - Van Biesbroeck G., 3 - Page) -------------------------------------------------------- N Year ET UT sat. month day day X Y light-time corrected arcsec arcsec Observer with decimals --------------------------------------------------------