Launched USA-54 (Navstar GPS II-7, SVN-20) from Cape Canaveral aboard a Delta II, the seventh Block II satellite to join the still-developing Global Positioning System constellation.
- Outcome
- Success
- Orbit
- MEO
- Medium Earth orbit
- Payload to orbit
- 1.7 T
- Flight
- 7th
- of 13 Delta II 6925 flights
- Date and time
- 26 March 1990, 02:45 UTC
- Rocket
- Delta II 6925
- Builder
- McDonnell Douglas
- Launch site
- Space Launch Complex 17A, Cape Canaveral SFS, FL, USA
- Payload
- Navigation
- International designator
- 1990-025
- Launches in 1990
- 26th of 121
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