| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35433 | 32191 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 18 02:11 | 2024 Dec 22 08:48 |
| Time of closest approach (UTC) | 2024 Dec 28 18:47:40.231 |
| Minimum distance | 2.280 km |
| Height difference | 1.331 km |
| Relative speed | 14.701 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 66.9°N, 16.0°E |
| Height | 783 km |
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