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Satellites
Table 1 Properties of the Pluto-Charon system.

Boldface entries are values from New Horizons. Mean orbital elements (semimajor axis, orbital period, eccentricity, and inclination) for Charon are Plutocentric, whereas those for the small satellites are barycentric and are based on numerical integrations (35); GM (standard gravitational parameter) values are also from (35).