Discovered by Gerard Kuiper May 1, 1949
Named after the fifty Nereids, mythological sea-nymphs who were attendants of Neptune
Orbital size 5,513,400 km (about 3,400,000 miles)
Orbital eccentricity 75% (largest of any planet or moon)
Orbital inclination 27.6 degrees
Orbital period 360.14 days
Rotational period 11.52 hours (source/validity uncertain)
Diameter about 340 km (about 210 miles)
Mass unknown
Albedo (reflectivity) 14%