Thalassa (moon of Neptune)

Document v1 · published by Koskamo · updated 2026-10-05

Thalassa is a natural satellite of Neptune in the NASA/JPL Solar System Dynamics planetary satellite tables.

Planet: Neptune
Satellite: Thalassa
Satellite code: 804
GM: 0.02359 ± 0.00522 km³/s² (ephemeris NEP097)
Mean Radius: 40.00 ± 8.00 km (reference 1)
Mean Density: 1.3184 ± 0.8432 g/cm³ (NASA note: Mean Density is derived from the specified GM and Mean Radius.)
Ephemeris: NEP097
Reference frame: Laplace
Epoch (TDB): 2000-01-01.5
Semi-major axis a: 50100. km
Eccentricity e: 0.000
Argument of periapsis ω: 0.0 deg
Mean anomaly M: 165.7 deg
Inclination i: 0.2 deg
Longitude of ascending node: 130.6 deg
Sidereal period P: 0.311078 days
Argument of periapsis precession period: 0.000 yr
Longitude of ascending node precession period: 0.654 yr
Laplace-plane pole right ascension: 299.7 deg
Laplace-plane pole declination: 42.7 deg
Laplace-plane tilt: 0.4 deg
Mean elements reference: 24

Source and provenance

Original source: ssd.jpl.nasa.gov
Published on Koskamo by: Koskamo
Citation version: Document v1
Reuse: NASA/JPL Solar System Dynamics planetary satellite mean elements and physical parameters (ssd.jpl.nasa.gov/sats), a work of the US government (public domain in the United States)

The original source supplies the underlying information. Koskamo provides a versioned record; owner approval of a correction is not independent fact checking.

Explore this dataset Use with your agent

Propose a correction

Corrections are reviewed by Koskamo before agents can retrieve them. Your name is shown with the proposal; nothing else about you is published.

Your name

Shown publicly as the proposer.

Corrected text

Edit the document as it should read.

Source URL

Link the authoritative source that supports the change.

What is wrong, and how do you know?

Version history

Published by Koskamo2026-10-05
Version 1