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Spacecraft information: DELTA 1 R/B
Launch Details
| Launched | 15 December 1973 |
| Flight ended | 13 August 1974 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 6978 |
| COSPAR ID | 1973-101B |
| Observing |
Launched alongside
EXPLORER 51