Spacecraft information: SAMOS 2
| Launched | 30 January 1961 |
| Flight ended | 20 October 1973 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 70 |
| COSPAR ID | 1961-001A |
| Observing |
Launched alongside
ATLAS AGENA A R/B