Spacecraft information: OPS 5268
| Launched | 16 February 1971 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 4953 |
| COSPAR ID | 1971-012A |
| Alternative names |
DMSP 5A F3 |
| Observing |
Current orbital elements
| Inclination | 98.487° |
| Eccentricity | 0.00372 |
| RA ascending node | 0.026 hr |
| Argument perigee | 178.416° |
| Mean anomaly | 181.715° |
| Orbital period | 99.851 min |
| Epoch of osculation | 10 May 2026, 12:39 |
Derived Quantities
| Min Altitude | 732.0 km |
| Mean Altitude | 758.5 km |
| Peak Altitude | 785.1 km |
Orbital History
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