| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35462 | 31473 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 22 21:54 |
| Time of closest approach (UTC) | 2024 Dec 24 03:18:15.187 |
| Minimum distance | 0.971 km |
| Height difference | -0.444 km |
| Relative speed | 14.615 km/s |
| Angle between velocity vectors | 156° |
| Geographic position | 68.4°S, 87.3°W |
| Height | 794 km |
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