Spacecraft information: LACE
| Launched | 13 February 1990 |
| Flight ended | 23 May 2000 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 20496 |
| COSPAR ID | 1990-015A |
| Alternative names |
USA 51 |
| Observing |