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Spacecraft information: DELTA 1 R/B
Launch Details
| Launched | 20 June 1969 |
| Flight ended | 9 December 1976 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 3993 |
| COSPAR ID | 1969-053B |
| Observing |
Launched alongside
EXPLORER 41