TDRS-11 was constructed by Boeing, and is based on the BSS-601HPsatellite bus. Fully fuelled, it has a mass of 3,454 kilograms (7,615 lb), and is expected to operate for 15 years.[1] It carries two steerable antennas capable of providing S, Ku and Ka band communications for other spacecraft, plus an array of additional S-band transponders to allow communications at a lower data rate with greater numbers of spacecraft.[4]
Following its arrival in geosynchronous orbit, the satellite underwent on-orbit testing. It was handed over to NASA in August 2013, receiving its operational designation TDRS-11. After its arrival on-station at 171 degrees west the satellite began its final phase of testing prior to entry into service at the end of November.[6] As of May 2020, it was positioned at 174 degrees west.[7]
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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