Triton (moon of Neptune)

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

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

Planet: Neptune
Satellite: Triton
Satellite code: 801
GM: 1428.49546 ± 0.61603 km³/s² (ephemeris NEP097)
Mean Radius: 1352.60 ± 2.40 km (reference 1)
Mean Density: 2.0649 ± 0.0110 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: 354800. km
Eccentricity e: 0.000
Argument of periapsis ω: 0.0 deg
Mean anomaly M: 63.0 deg
Inclination i: 157.3 deg
Longitude of ascending node: 178.1 deg
Sidereal period P: 5.876994 days
Argument of periapsis precession period: 0.000 yr
Longitude of ascending node precession period: 340.379 yr
Laplace-plane pole right ascension: 299.8 deg
Laplace-plane pole declination: 43.1 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)

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Version history

Published by Koskamo2026-10-05
Version 1