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Spacecraft information: 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 | 67.693° |
| Eccentricity | 0.51742 |
| RA ascending node | 5.797 hr |
| Argument perigee | 97.304° |
| Mean anomaly | 321.707° |
| Orbital period | 717.090 min |
| Epoch of osculation | 26 Mar 2026, 10:13 |
Derived Quantities
| Min Altitude | 6436.0 km |
| Mean Altitude | 20167.5 km |
| Peak Altitude | 33899.0 km |
Orbital History
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