Map projection of Charon, the largest of Pluto's five moons, annotated with its first set of official feature names. With a diameter of about 755 miles, the Texas-sized moon is one of largest known objects in the Kuiper Belt, the region of icy, rocky bodies beyond Neptune.
The Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, designed, built, and operates the New Horizons spacecraft, and manages the mission for NASA's Science Mission Directorate. The Southwest Research Institute, based in San Antonio, leads the science team, payload operations and encounter science planning. New Horizons is part of the New Frontiers Program managed by NASA's Marshall Space Flight Center in Huntsville, Alabama.