Spacecraft information: LDEF
| Launched | 5 April 1984 |
| Flight ended | 19 January 1990 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 14898 |
| COSPAR ID | 1984-034B |
| Observing |
Launched alongside
STS 41CSpacecraft information: LDEF
| Launched | 5 April 1984 |
| Flight ended | 19 January 1990 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 14898 |
| COSPAR ID | 1984-034B |
| Observing |
Launched alongside
STS 41C