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Spacecraft information: EXPLORER 11
Launch Details
| Launched | 26 April 1961 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 107 |
| COSPAR ID | 1961-013A |
| Observing |
Current orbital elements
| Inclination | 28.779° |
| Eccentricity | 0.04922 |
| RA ascending node | 3.886 hr |
| Argument perigee | 186.530° |
| Mean anomaly | 172.867° |
| Orbital period | 101.237 min |
| Epoch of osculation | 31 Jul 2026, 22:46 |
Derived Quantities
| Min Altitude | 470.2 km |
| Mean Altitude | 824.3 km |
| Peak Altitude | 1178.5 km |
Launched alongside
EXPLORER 11 DEBOrbital History
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