Spacecraft information: COSMOS 1766
| Launched | 27 July 1986 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 16881 |
| COSPAR ID | 1986-055A |
| Observing |
Current orbital elements
| Inclination | 82.491° |
| Eccentricity | 0.00079 |
| RA ascending node | 13.307 hr |
| Argument perigee | 123.594° |
| Mean anomaly | 236.606° |
| Orbital period | 93.145 min |
| Epoch of osculation | 12 Dec 2025, 06:41 |
Derived Quantities
| Min Altitude | 430.3 km |
| Mean Altitude | 435.7 km |
| Peak Altitude | 441.0 km |
Launched alongside
SL-14 R/BOrbital History
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