Source: https://ssd.jpl.nasa.gov/sats/elem
Title: Planetary Satellite Mean Elements
Selected source excerpts (not the complete document).

| Earth | Moon | 301 | DE405/LE405 | ecliptic | 2000-01-01.5 | 384400. | 0.0554 | 318.15 | 135.27 | 5.16 | 125.08 | 27.322 | 5.997 | 18.600 | | | | n/a |

| Jupiter | Io | 501 | JUP365 | Laplace | 2000-01-01.5 | 421800. | 0.004 | 49.1 | 330.9 | 0.0 | 0.0 | 1.762732 | 1.333 | 0.000 | 268.1 | 64.5 | 0.0 | 29 |

| Jupiter | Europa | 502 | JUP365 | Laplace | 2000-01-01.5 | 671100. | 0.009 | 45.0 | 345.4 | 0.5 | 184.0 | 3.525463 | 1.394 | 30.202 | 268.1 | 64.5 | 0.0 | 29 |

| Jupiter | Ganymede | 503 | JUP365 | Laplace | 2000-01-01.5 | 1070400. | 0.001 | 198.3 | 324.8 | 0.2 | 58.5 | 7.155588 | 68.301 | 137.812 | 268.2 | 64.6 | 0.1 | 29 |

| Jupiter | Callisto | 504 | JUP365 | Laplace | 2000-01-01.5 | 1882700. | 0.007 | 43.8 | 87.4 | 0.3 | 309.1 | 16.690440 | 277.921 | 577.264 | 268.7 | 64.8 | 0.4 | 29 |

**Warning!** These mean orbital parameters are **not intended for ephemeris computation**. Accurate ephemerides should be obtained from our [Horizons](/horizons/) system. Mean orbital parameters are primarily useful in describing the general shape and orientation of a planetary satellite's orbit.

| Planet | Satellite | Code | Ephemeris | Frame | Epoch (TDB) | a (km) | e | ω (deg) | M (deg) | i (deg) | node (deg) | P (days) | Papsis (yr) | Pnode (yr) | R.A. (deg) | Dec. (deg) | Tilt (deg) | Ref. |

| a | semi-major Axis |

| P | sidereal period |
