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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 | 11.546° |
| Eccentricity | 0.00023 |
| RA ascending node | 21.411 hr |
| Argument perigee | 302.811° |
| Mean anomaly | 235.874° |
| Orbital period | 1456.623 min |
| Epoch of osculation | 16 May 2026, 06:38 |
Derived Quantities
| Min Altitude | 36185.0 km |
| Mean Altitude | 36194.6 km |
| Peak Altitude | 36204.1 km |
Orbital History
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