Eggther is a natural satellite of Saturn in the NASA/JPL Solar System Dynamics planetary satellite tables.
- Planet: Saturn
- Satellite: Eggther
- Satellite code: 659
- Physical parameters: not listed in the NASA/JPL planetary satellite physical parameters table
- Ephemeris: SAT456
- Reference frame: ecliptic
- Epoch (TDB): 2000-01-01.5
- Semi-major axis a: 19844600. km
- Eccentricity e: 0.157
- Argument of periapsis ω: 130.1 deg
- Mean anomaly M: 111.7 deg
- Inclination i: 165.0 deg
- Longitude of ascending node: 84.5 deg
- Sidereal period P: 1043.8035 days
- Argument of periapsis precession period: 218.9 yr
- Longitude of ascending node precession period: 403.0 yr
- Mean elements reference: 48