Spaceflight Abbreviations and Acronyms

1. TIG
   Time of Ignition
2. TIO
   Target Insertion Orbit
3. TIR
   Terminal Imaging Radar
4. TIROS
   Television InfraRed Observation Satellite (POES)
5. TKSC
   Tsukuba Space Center
6. TMG
   Thermal Meteoroid Garment
7. TMR
   TOPEX Microwave Radiometer (EOS)
8. TOI
   Time of Ignition
9. TOI
   Transfer Orbit Insertion
10. TOS
    Transfer Orbit Stage
11. TOW
    Tank and Orbiter Weight
12. TP
    Time to Perigee
13. TR
    Teleoperator Retrieval
14. TR
    time to retrofire
15. TR/SBS
    Teleoperator Retrieval/Skylab Boost System
16. TT&C
    Tracking, Telemetry, and Command
17. TTA
    Time to Apogee
18. TTC
    Tracking, Telemetry, and Command
19. TTC
    Telemetry Telecommand and Control
20. TTP
    Time to Perigee

Last updated: May 24, 2020 — Total entries: 1,156