EXPLORER 19
| Launched | 18 December 1963 |
| Flight ended | 9 May 1981 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 714 |
| COSPAR ID | 1963-053A |
| Alternative names |
ADI-1 |
| Observing |