Launch data:
| Designation | 20963 / 90097B |
| Launch date | 15 Nov 1990 |
| Launch site | KSC, LC-39A |
| Launch vehicle | Shuttle STS-38 |
| Mission | Military: SIGINT (Magnum) |
| Geostationary orbit on: | |
| Perigee / Apogee | km |
| Eccentricity | |
| Inclination | deg |
| Period | min |
| Mass at launch | 2700 kg |
