DELTA 1 R/B
| Launched | 2 February 1965 |
| Flight ended | 10 September 1977 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 988 |
| COSPAR ID | 1965-007B |
| Observing |
Launched alongside
OSO 2DELTA 1 R/B
| Launched | 2 February 1965 |
| Flight ended | 10 September 1977 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 988 |
| COSPAR ID | 1965-007B |
| Observing |
Launched alongside
OSO 2