| Primary satellite | Secondary satellite |
| Name | Kosmos-1226 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12091 | 29766 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 13:47 | 2026 Jan 13 15:05 |
| Time of closest approach (UTC) | 2025 Dec 10 03:55:01.254 |
| Minimum distance | 117.021 km |
| Height difference | -3.700 km |
| Relative speed | 14.155 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 82.2°N, 70.2°E |
| Height | 1016 km |
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