| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34913 | 31217 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 21 19:55 |
| Time of closest approach (UTC) | 2024 Dec 27 13:31:09.451 |
| Minimum distance | 2.479 km |
| Height difference | 1.625 km |
| Relative speed | 14.880 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 51.6°N, 63.8°E |
| Height | 784 km |
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