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Spacecraft information: VANGUARD R/B
Launch Details
| Launched | 16 February 1959 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 12 |
| COSPAR ID | 1959-001B |
| Observing |
Current orbital elements
| Inclination | 32.900° |
| Eccentricity | 0.16466 |
| RA ascending node | 18.922 hr |
| Argument perigee | 17.096° |
| Mean anomaly | 347.897° |
| Orbital period | 125.369 min |
| Epoch of osculation | 31 May 2026, 13:14 |
Derived Quantities
| Min Altitude | 560.3 km |
| Mean Altitude | 1926.6 km |
| Peak Altitude | 3292.9 km |
Orbital History
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