Spacecraft information: USA 279
| Launched | 14 October 2017 |
| Flight ended | – |
| Status | Operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 42949 |
| COSPAR ID | 2017-066A |
| Alternative names |
NROL-52 |
| Observing |