ORS-5, also known as SensorSat, is a single satellite constellation with a primary mission to provide space situational awareness. It measures about five feet long, two and a half feet wide, and weighs about 250 pounds. It will operate from a low, zero inclination orbit approximately 372 miles above the earth to aid the U.S. military's tracking of other satellites and space debris in geosynchronous orbit, 22,236 miles above the equator, commonly used by defense-related communications satellites, television broadcasting stations, and international space platforms. (Courtesy photo: MIT LL)

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