| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31734 | 33841 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 06:07 | 2024 Dec 22 16:25 |
| Time of closest approach (UTC) | 2024 Dec 29 01:30:39.826 |
| Minimum distance | 4.890 km |
| Height difference | -2.830 km |
| Relative speed | 14.683 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 65.7°S, 39.7°E |
| Height | 792 km |
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