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Spacecraft information: COSMOS 1861
Launch Details
| Launched | 22 June 1987 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18129 |
| COSPAR ID | 1987-054A |
| Observing |
Current orbital elements
| Inclination | 82.924° |
| Eccentricity | 0.00102 |
| RA ascending node | 2.986 hr |
| Argument perigee | 260.876° |
| Mean anomaly | 214.323° |
| Orbital period | 104.860 min |
| Epoch of osculation | 26 Feb 2026, 11:31 |
Derived Quantities
| Min Altitude | 987.5 km |
| Mean Altitude | 995.0 km |
| Peak Altitude | 1002.6 km |
Orbital History
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