| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31826 | 34022 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:12 | 2024 Dec 23 13:25 |
| Time of closest approach (UTC) | 2024 Dec 28 07:19:51.571 |
| Minimum distance | 3.444 km |
| Height difference | -3.139 km |
| Relative speed | 14.785 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 62.3°N, 134.2°E |
| Height | 787 km |
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