STS 39 DEB
| Launched | 27 April 1991 |
| Flight ended | 11 May 1991 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21246 |
| COSPAR ID | 1991-031E |
| Alternative names |
CRO-B |
| Observing |