| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 37966 | 31850 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 08:48 | 2024 Dec 22 05:35 |
| Time of closest approach (UTC) | 2024 Dec 28 05:13:00.531 |
| Minimum distance | 2.790 km |
| Height difference | -2.763 km |
| Relative speed | 14.169 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 73.2°N, 154.3°E |
| Height | 625 km |
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