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Spacecraft information: USA 7
Launch Details
| Launched | 21 December 1984 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 15453 |
| COSPAR ID | 1984-129A |
| Alternative names |
DSP 12 |
| Observing |
Current orbital elements
| Inclination | 11.384° |
| Eccentricity | 0.00030 |
| RA ascending node | 21.363 hr |
| Argument perigee | 269.056° |
| Mean anomaly | 83.254° |
| Orbital period | 1456.631 min |
| Epoch of osculation | 24 Aug 2026, 21:45 |
Derived Quantities
| Min Altitude | 36182.0 km |
| Mean Altitude | 36194.7 km |
| Peak Altitude | 36207.4 km |
Orbital History
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