Spacecraft information: OPS 5644
| Launched | 4 June 1977 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 10033 |
| COSPAR ID | 1977-044A |
| Alternative names |
DMSP 5D-1 F2 |
| Observing |
Current orbital elements
| Inclination | 99.118° |
| Eccentricity | 0.00367 |
| RA ascending node | 12.896 hr |
| Argument perigee | 292.935° |
| Mean anomaly | 66.796° |
| Orbital period | 100.597 min |
| Epoch of osculation | 26 May 2026, 03:12 |
Derived Quantities
| Min Altitude | 767.7 km |
| Mean Altitude | 794.0 km |
| Peak Altitude | 820.3 km |
Orbital History
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