DELTA 1 DEB
| Launched | 11 July 1961 |
| Flight ended | 1 March 1992 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 166 |
| COSPAR ID | 1961-017C |
| Alternative names |
YO |
| Observing |