| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34430 | 31041 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:42 | 2024 Dec 22 23:19 |
| Time of closest approach (UTC) | 2024 Dec 24 20:42:50.850 |
| Minimum distance | 0.417 km |
| Height difference | -0.164 km |
| Relative speed | 13.886 km/s |
| Angle between velocity vectors | 137° |
| Geographic position | 73.7°S, 112.2°E |
| Height | 812 km |
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