Spacecraft information: EXPLORER 9
| Launched | 15 February 1961 |
| Flight ended | 8 April 1964 |
| Status | Decayed |
| Launch site | Wallops Island, Virginia, USA |
| Owner | United States |
| NORAD ID | 81 |
| COSPAR ID | 1961-004A |
| Observing |
Launched alongside
SCOUT X-1 R/B SCOUT X-1 DEB SCOUT X-1 DEB SCOUT X-1 DEB SCOUT X-1 DEB SCOUT X-1 DEB SCOUT X-1 DEB