Every world / Moon of Neptune

Nereid

Outline The numbers here are measured. The rest of this page is being written.

The path of Nereid round Neptune, seen from above and drawn to scale, with the white dot at its nearest point. Orbit from NASA/JPL Solar System Dynamics, planetary satellites.

Kind: Moon of Neptune
Distance: 5,516,366 km from Neptune on average
Once round: 360.1 days
Path: a long oval (eccentricity 0.747), tilted 5.05°
Size: 340 km across, 9.78 per cent of our Moon’s width
Found: 1949, by G.P. Kuiper

Neptune On the atlas In 3D

Nereid, our Moon and Neptune, drawn to one scale from their measured sizes, as plain discs.

Still being written

What it looks like up close
What it is made of
How it was found
Spacecraft that have seen it
What is still unknown

Sources: NASA/JPL Solar System Dynamics, planetary satellites.