science · 01 May 1949 · 75 years ago
In 1949, Gerard Kuiper discovered Nereid, the second satellite of Neptune, the outermost and the third largest of Neptune's known satellites. (Orbit: ave 5,513,400 km, diameter: 340 km). Nereid's orbit is the most highly eccentric of any planet or satellite in the solar system; its distance from Neptune varies from 1,353,600 to 9,623,700 kilometers. Nereid's odd orbit indicates that it may be a captured asteroid or Kuiper Belt object. The name, Nereid refers to the sea nymphs who dwell in the Mediterranean sea, the 50 daughters of Nereus and Doris. Kuiper, a Dutch-American astronomer (1905-1973) also studied the surface of the Moon; discovered Miranda, a moon of Uranus; and found an atmosphere on Titan, a moon of Saturn.