Phobos
RADIUS13.5x10.8x9.4 km
MASS1.8072e-09 (Earth=1)
DENSITY2.0 (gm/cm)
GRAVITY? (Earth=1)
ORBIT PERIOD0.319 (Earth days)
ROTATION PERIOD0.319 (Earth days)
DISTANCE FROM PLANET9,380 km
ECCENTRICITY OF ORBIT0.01