S2021_J_1 is a natural satellite of Jupiter in the NASA/JPL Solar System Dynamics planetary satellite tables.
- Planet: Jupiter
- Satellite: S2021_J_1
- Satellite code: 55512
- 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: 20954700. km
- Eccentricity e: 0.228
- Argument of periapsis ω: 20.6 deg
- Mean anomaly M: 129.1 deg
- Inclination i: 150.5 deg
- Longitude of ascending node: 241.1 deg
- Sidereal period P: 619.7687 days
- Argument of periapsis precession period: 78.1 yr
- Longitude of ascending node precession period: 118.4 yr
- Mean elements reference: 47