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Spacecraft information: VANGUARD 3
Launch Details
| Launched | 17 September 1959 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 20 |
| COSPAR ID | 1959-007A |
| Observing |
Current orbital elements
| Inclination | 33.344° |
| Eccentricity | 0.16385 |
| RA ascending node | 2.147 hr |
| Argument perigee | 51.001° |
| Mean anomaly | 322.546° |
| Orbital period | 123.946 min |
| Epoch of osculation | 02 Feb 2026, 09:38 |
Derived Quantities
| Min Altitude | 514.5 km |
| Mean Altitude | 1863.7 km |
| Peak Altitude | 3212.9 km |
Orbital History
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