Dia is a natural satellite of Jupiter in the NASA/JPL Solar System Dynamics planetary satellite tables.
- Planet: Jupiter
- Satellite: Dia
- Satellite code: 553
- Physical parameters: not listed in the NASA/JPL planetary satellite physical parameters table
- Ephemeris: JUP347
- Reference frame: ecliptic
- Epoch (TDB): 2000-01-01.5
- Semi-major axis a: 12257900. km
- Eccentricity e: 0.232
- Argument of periapsis ω: 164.1 deg
- Mean anomaly M: 320.9 deg
- Inclination i: 29.1 deg
- Longitude of ascending node: 293.9 deg
- Sidereal period P: 277.2472 days
- Argument of periapsis precession period: 169.8 yr
- Longitude of ascending node precession period: 258.2 yr
- Mean elements reference: 47