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Spacecraft information: EXPLORER 20
Launch Details
| Launched | 24 August 1964 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 870 |
| COSPAR ID | 1964-051A |
| Observing |
Current orbital elements
| Inclination | 79.897° |
| Eccentricity | 0.00968 |
| RA ascending node | 20.524 hr |
| Argument perigee | 354.319° |
| Mean anomaly | 5.686° |
| Orbital period | 103.464 min |
| Epoch of osculation | 21 May 2026, 10:15 |
Derived Quantities
| Min Altitude | 858.9 km |
| Mean Altitude | 929.5 km |
| Peak Altitude | 1000.2 km |
Orbital History
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