| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 30251 | 35045 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:37 | 2024 Dec 20 15:23 |
| Time of closest approach (UTC) | 2024 Dec 24 16:45:10.738 |
| Minimum distance | 4.564 km |
| Height difference | 2.647 km |
| Relative speed | 13.988 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 73.3°S, 134.6°W |
| Height | 789 km |
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