| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34430 | 30604 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:42 | 2024 Dec 22 14:10 |
| Time of closest approach (UTC) | 2024 Dec 26 20:31:56.100 |
| Minimum distance | 4.745 km |
| Height difference | 0.374 km |
| Relative speed | 14.884 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 31.2°N, 3.6°W |
| Height | 789 km |
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