Labels:amusement park | ascent | monitor | sky | sun | traffic light OCR: CHARON Data Mean distance from center of planet: 12 200 mi. (19 600 km) Inclination of axis: Rotation period: 39 days Orbital period 3 days Orbital eccentricity low Orbital inclination planet' equator: 98.8 Diameter: 745 mi. 1,200 km) Mass: 1.77 x 1021 Density: 2 g/cm Escape velocity: 0.37 mi (0.59 km) per second