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 | 34.247° |
| Eccentricity | 0.18355 |
| RA ascending node | 22.391 hr |
| Argument perigee | 107.022° |
| Mean anomaly | 273.882° |
| Orbital period | 132.597 min |
| Epoch of osculation | 10 Jun 2026, 04:58 |
Derived Quantities
| Min Altitude | 661.6 km |
| Mean Altitude | 2242.6 km |
| Peak Altitude | 3823.6 km |
Orbital History
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