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Spacecraft information: NNSS 20
Launch Details
| Launched | 29 October 1973 |
| Flight ended | – |
| Status | Unknown |
| Category |
Navy Navigation Satellite System (NNSS)
|
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 6909 |
| COSPAR ID | 1973-081A |
| Alternative names |
TRANSIT 20 |
| Observing |
Current orbital elements
| Inclination | 89.856° |
| Eccentricity | 0.01566 |
| RA ascending node | 17.000 hr |
| Argument perigee | 68.757° |
| Mean anomaly | 293.024° |
| Orbital period | 104.999 min |
| Epoch of osculation | 15 Dec 2025, 23:16 |
Derived Quantities
| Min Altitude | 886.1 km |
| Mean Altitude | 1001.6 km |
| Peak Altitude | 1117.0 km |
Orbital History
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