| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35462 | 38717 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 17 22:51 |
| Time of closest approach (UTC) | 2024 Dec 26 03:34:09.267 |
| Minimum distance | 2.977 km |
| Height difference | -2.977 km |
| Relative speed | 14.740 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 43.2°N, 158.5°W |
| Height | 875 km |
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