This is the last Orion satellite launch on Titan IV rocket and last launch of Titan IV (401)B/Centaur-T Version and last Titan IV launch with extremely long metallic fairing and future Orion mission will launch on the Delta IV Heavy rocket.[5]
Orion also known as Mentor is a SIGINT/ELINT satellite build to replace Magnum satellite[6] and the COMINT capability also made Orion a replacement for the Mercury satellite.[7] It is called that the satellite has a reflector of a diameter as big as ~100m[8][9]
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).
