SCOUT D-1 R/B
| Launched | 17 February 1974 |
| Flight ended | 8 June 1974 |
| Status | Decayed |
| Launch site | San Marco Launch Platform, Indian Ocean (Kenya) |
| Owner | United States |
| NORAD ID | 7157 |
| COSPAR ID | 1974-009B |
| Observing |
Launched alongside
SAN MARCO 4SCOUT D-1 R/B
| Launched | 17 February 1974 |
| Flight ended | 8 June 1974 |
| Status | Decayed |
| Launch site | San Marco Launch Platform, Indian Ocean (Kenya) |
| Owner | United States |
| NORAD ID | 7157 |
| COSPAR ID | 1974-009B |
| Observing |
Launched alongside
SAN MARCO 4