| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34588 | 31195 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:00 | 2024 Dec 23 01:58 |
| Time of closest approach (UTC) | 2024 Dec 24 02:25:06.806 |
| Minimum distance | 1.541 km |
| Height difference | -1.213 km |
| Relative speed | 14.907 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 57.2°N, 99.6°E |
| Height | 763 km |
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