| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31165 | 35647 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 00:37 | 2024 Dec 21 00:26 |
| Time of closest approach (UTC) | 2024 Dec 23 14:32:20.494 |
| Minimum distance | 4.282 km |
| Height difference | -3.721 km |
| Relative speed | 14.427 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 71.5°N, 42.8°E |
| Height | 744 km |
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