Amalthea is a natural satellite of Jupiter in the NASA/JPL Solar System Dynamics planetary satellite tables.
- Planet: Jupiter
- Satellite: Amalthea
- Satellite code: 505
- GM: 0.16456 ± 0.00867 km³/s² (ephemeris JUP365)
- Mean Radius: 83.50 ± 3.00 km (reference 1)
- Mean Density: 1.0111 ± 0.1213 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: 181400. km
- Eccentricity e: 0.003
- Argument of periapsis ω: 180.1 deg
- Mean anomaly M: 310.6 deg
- Inclination i: 0.4 deg
- Longitude of ascending node: 282.9 deg
- Sidereal period P: 0.499918 days
- Argument of periapsis precession period: 0.196 yr
- Longitude of ascending node precession period: 0.393 yr
- Laplace-plane pole right ascension: 268.1 deg
- Laplace-plane pole declination: 64.5 deg
- Laplace-plane tilt: 0.0 deg
- Mean elements reference: 29