| Primary satellite | Secondary satellite |
| Name | Kosmos-1226 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12091 | 38135 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 13:47 | 2026 Jan 10 21:39 |
| Time of closest approach (UTC) | 2025 Dec 06 22:14:01.012 |
| Minimum distance | 86.999 km |
| Height difference | 2.889 km |
| Relative speed | 11.937 km/s |
| Angle between velocity vectors | 109° |
| Geographic position | 79.9°S, 53.1°E |
| Height | 991 km |
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