| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35789 | 30409 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 23 00:26 |
| Time of closest approach (UTC) | 2024 Dec 27 02:57:24.643 |
| Minimum distance | 4.615 km |
| Height difference | -4.470 km |
| Relative speed | 14.702 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 65.8°S, 28.0°E |
| Height | 806 km |
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