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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 | 33.345° |
| Eccentricity | 0.16376 |
| RA ascending node | 4.134 hr |
| Argument perigee | 182.695° |
| Mean anomaly | 176.377° |
| Orbital period | 123.931 min |
| Epoch of osculation | 05 May 2026, 02:45 |
Derived Quantities
| Min Altitude | 514.7 km |
| Mean Altitude | 1863.0 km |
| Peak Altitude | 3211.4 km |
Orbital History
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