Spacecraft information: COSMOS 1266 FUEL CORE
| Launched | 20 April 1981 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 12435 |
| COSPAR ID | 1981-037D |
| Observing |
Current orbital elements
| Inclination | 64.768° |
| Eccentricity | 0.00365 |
| RA ascending node | 15.534 hr |
| Argument perigee | 267.934° |
| Mean anomaly | 91.754° |
| Orbital period | 103.360 min |
| Epoch of osculation | 20 Dec 2025, 02:19 |
Derived Quantities
| Min Altitude | 898.0 km |
| Mean Altitude | 924.6 km |
| Peak Altitude | 951.3 km |
Orbital History
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