Thalassa

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

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

A small, oddly flat moon circling between two of Neptune’s faint rings. Naiad shares its neighbourhood, but their orbits are locked in a rhythm that keeps them well apart. Like Naiad, Thalassa circles faster than Neptune turns and is slowly spiralling inward.

Radius

40 km

Orbit

50k km from Neptune

Period

0.31 days

Discovered

1989 — Voyager 2

Lives

Between the Galle and Le Verrier rings

Shape

Unusually flat, about 108 × 100 × 52 km; drawn as a sphere

Explore Thalassa in 3D

Cosmoscope places Thalassa 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.