Ganymede (moon of Jupiter)

Document v1 · published by Koskamo · updated 2026-10-04

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

Planet: Jupiter
Satellite: Ganymede
Satellite code: 503
GM: 9887.83275 ± 0.00247 km³/s² (ephemeris JUP365)
Mean Radius: 2631.20 ± 1.70 km (reference 1)
Mean Density: 1.9416 ± 0.0038 g/cm³ (NASA note: Mean Density is derived from the specified GM and Mean Radius.)
Ephemeris: JUP365
Reference frame: Laplace
Epoch (TDB): 2000-01-01.5
Semi-major axis a: 1070400. km
Eccentricity e: 0.001
Argument of periapsis ω: 198.3 deg
Mean anomaly M: 324.8 deg
Inclination i: 0.2 deg
Longitude of ascending node: 58.5 deg
Sidereal period P: 7.155588 days
Argument of periapsis precession period: 68.301 yr
Longitude of ascending node precession period: 137.812 yr
Laplace-plane pole right ascension: 268.2 deg
Laplace-plane pole declination: 64.6 deg
Laplace-plane tilt: 0.1 deg
Mean elements reference: 29

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 Koskamo2026-10-04
Version 1