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Nereid

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Neptune’s satellite Nereid was discovered by Gerard Kuiper in 1949. It orbits in the outer system of Neptune, at a distance of 5,513,00 km (or 222 Neptunian radii), with a high eccentricity (e = 0.75) and a high inclination (i = 27°). Its diameter is 370 km and its density is 1.5 g/cm3; its surface is dark (with an albedo of 0.12) and heavily cratered. The high ellipticity of Nereid’s orbit suggests that, as in the case of Triton, Nereid is probably a captured object. The only image taken by Voyager was from a large distance (almost 5 million kilometers), so very little is known about the surface properties of this satellite.

See also

Giant Planets

Neptune

Triton

Voyager (Spacecraft)

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Correspondence to Therese Encrenaz .

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© 2011 Springer-Verlag Berlin Heidelberg

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Encrenaz, T. (2011). Nereid. In: , et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11274-4_1048

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