Europa
MEAN RADIUS: 1565 km
MASS: 0.0081 (Earth=1)
DENSITY: 3.04 (gm/cm)
GRAVITY: 0.138 (Earth=1)
ORBIT PERIOD: 3.551 (Earth days)
ROTATION PERIOD: 3.551 (Earth days)
SEMIMAJOR AXIS OF ORBIT: 670,900 km
ECCENTRICITY OF ORBIT: 0.009