| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35605 | 31214 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 17:09 | 2024 Dec 22 19:28 |
| Time of closest approach (UTC) | 2024 Dec 27 15:02:35.223 |
| Minimum distance | 4.543 km |
| Height difference | 4.542 km |
| Relative speed | 14.326 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 72.5°N, 129.0°E |
| Height | 662 km |
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