IBSS
| Launched | 27 April 1991 |
| Flight ended | 5 May 1991 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21244 |
| COSPAR ID | 1991-031B |
| Observing |
IBSS
| Launched | 27 April 1991 |
| Flight ended | 5 May 1991 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21244 |
| COSPAR ID | 1991-031B |
| Observing |