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COSMOS 1684
Launch Details
| Launched | 23 September 1985 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 16064 |
| COSPAR ID | 1985-084A |
| Observing |
Current orbital elements
| Inclination | 67.530° |
| Eccentricity | 0.51090 |
| RA ascending node | 6.488 hr |
| Argument perigee | 102.013° |
| Mean anomaly | 317.459° |
| Orbital period | 717.689 min |
| Epoch of osculation | 30 Aug 2025, 17:13 |
Derived Quantities
| Min Altitude | 6616.2 km |
| Mean Altitude | 20182.3 km |
| Peak Altitude | 33748.3 km |
Orbital History
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