Nereid

Nereid — moon orbiting Neptune, explore its interactive 3D model in Cosmoscope.

Explore Nereid in a live 3D Solar System. Follow its calculated motion and inspect real astronomical data, distances and orbital facts.

Neptune’s outlier swings from 1.4 to 9.6 million km out on one of the most eccentric orbits of any known moon — possibly scattered there when Neptune captured Triton. Its path here is the real ellipse, not a circle.

Radius

170 km

Orbit

5,514k km from Neptune

Period

360.13 days

Discovered

1949 — Gerard Kuiper

Orbit shape

1.4 to 9.6 million km from Neptune (e ≈ 0.75)

Record

One of the most stretched orbits of any known moon

Explore Nereid in 3D

Cosmoscope places Nereid in the Solar System using astronomical ephemeris or orbital elements, updated for the simulation time. Explore its calculated motion, distance and orbital facts in the interactive 3D view. Accuracy depends on the orbital model and its valid time range.