| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35433 | 29909 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 18 02:11 | 2024 Dec 23 04:43 |
| Time of closest approach (UTC) | 2024 Dec 26 07:55:09.163 |
| Minimum distance | 3.323 km |
| Height difference | -1.985 km |
| Relative speed | 14.885 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 45.6°N, 64.7°E |
| Height | 767 km |
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