| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33994 | 31656 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:16 | 2024 Dec 23 08:57 |
| Time of closest approach (UTC) | 2024 Dec 28 01:24:10.066 |
| Minimum distance | 11.893 km |
| Height difference | 2.865 km |
| Relative speed | 14.659 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 67.8°S, 136.5°W |
| Height | 779 km |
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