| Primary satellite | Secondary satellite |
| Name | Kosmos-1226 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12091 | 30690 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 13:47 | 2026 Jan 13 02:22 |
| Time of closest approach (UTC) | 2025 Dec 09 16:33:26.576 |
| Minimum distance | 219.961 km |
| Height difference | -0.039 km |
| Relative speed | 13.325 km/s |
| Angle between velocity vectors | 130° |
| Geographic position | 81.9°S, 57.5°E |
| Height | 991 km |
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