Whilst details of the satellites and their missions are officially classified, amateur observers have identified that the Atlas V deployed two satellites, one of which has officially been catalogued as debris. The two spacecraft have been identified as being a pair of third or fourth generation Naval Ocean Surveillance System satellites.[4] Amateur observations have located the spacecraft in an orbit with a perigee of 1,015 kilometres (631 mi) and an apogee of 1,207 kilometres (750 mi), inclined at 63.46° to the plane of the equator.[2] Current generation NOSS satellites are always launched and operated in pairs,[5] and are used to locate and track ships and aircraft from the radio transmissions that they emit.[6]
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
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