ATLAS D R/B
| Launched | 12 September 1961 |
| Flight ended | 12 September 1961 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 184 |
| COSPAR ID | 1961-025B |
| Observing |
Launched alongside
MERCURY ATLAS 4ATLAS D R/B
| Launched | 12 September 1961 |
| Flight ended | 12 September 1961 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 184 |
| COSPAR ID | 1961-025B |
| Observing |
Launched alongside
MERCURY ATLAS 4