Spacecraft information: VANGUARD 1
| Launched | 16 March 1958 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 5 |
| COSPAR ID | 1958-002B |
| Observing |
Current orbital elements
| Inclination | 34.241° |
| Eccentricity | 0.18401 |
| RA ascending node | 11.522 hr |
| Argument perigee | 13.316° |
| Mean anomaly | 350.995° |
| Orbital period | 132.604 min |
| Epoch of osculation | 11 Dec 2025, 17:47 |
Derived Quantities
| Min Altitude | 657.9 km |
| Mean Altitude | 2242.9 km |
| Peak Altitude | 3827.9 km |
Orbital History
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