| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31452 | 33990 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 19 16:57 | 2024 Dec 22 20:27 |
| Time of closest approach (UTC) | 2024 Dec 25 23:42:32.872 |
| Minimum distance | 2.624 km |
| Height difference | 2.535 km |
| Relative speed | 13.907 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 73.3°S, 67.5°W |
| Height | 891 km |
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