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Spacecraft information: OPS 6182
Launch Details
| Launched | 30 April 1978 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 10820 |
| COSPAR ID | 1978-042A |
| Alternative names |
DMSP 5D-1 F3 |
| Observing |
Current orbital elements
| Inclination | 98.453° |
| Eccentricity | 0.00082 |
| RA ascending node | 17.732 hr |
| Argument perigee | 284.254° |
| Mean anomaly | 75.773° |
| Orbital period | 100.140 min |
| Epoch of osculation | 10 Mar 2026, 12:47 |
Derived Quantities
| Min Altitude | 766.4 km |
| Mean Altitude | 772.3 km |
| Peak Altitude | 778.2 km |
Orbital History
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