| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34588 | 31731 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:00 | 2024 Dec 22 00:16 |
| Time of closest approach (UTC) | 2024 Dec 26 18:11:09.340 |
| Minimum distance | 3.875 km |
| Height difference | -3.035 km |
| Relative speed | 14.908 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 25.6°N, 1.6°E |
| Height | 773 km |
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