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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 | 67.706° |
| Eccentricity | 0.51892 |
| RA ascending node | 5.672 hr |
| Argument perigee | 96.456° |
| Mean anomaly | 322.344° |
| Orbital period | 717.233 min |
| Epoch of osculation | 02 May 2026, 18:40 |
Derived Quantities
| Min Altitude | 6397.7 km |
| Mean Altitude | 20171.0 km |
| Peak Altitude | 33944.3 km |
Orbital History
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