Spacecraft information: COSMOS 1257
| Launched | 5 March 1981 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 12327 |
| COSPAR ID | 1981-022H |
| Observing |
Current orbital elements
| Inclination | 74.030° |
| Eccentricity | 0.00063 |
| RA ascending node | 11.261 hr |
| Argument perigee | 57.589° |
| Mean anomaly | 12.935° |
| Orbital period | 115.398 min |
| Epoch of osculation | 26 Mar 2026, 09:29 |
Derived Quantities
| Min Altitude | 1475.7 km |
| Mean Altitude | 1480.6 km |
| Peak Altitude | 1485.6 km |
Launched alongside
COSMOS 1250 COSMOS 1251 COSMOS 1252 COSMOS 1253 COSMOS 1254 COSMOS 1255 COSMOS 1256 SL-8 R/BOrbital History
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