| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31569 | 34910 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 13:34 | 2024 Dec 22 20:21 |
| Time of closest approach (UTC) | 2024 Dec 26 08:58:00.006 |
| Minimum distance | 2.279 km |
| Height difference | 0.558 km |
| Relative speed | 10.996 km/s |
| Angle between velocity vectors | 94° |
| Geographic position | 70.1°N, 118.2°E |
| Height | 844 km |
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