| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31766 | 35434 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 05:40 | 2024 Dec 19 15:39 |
| Time of closest approach (UTC) | 2024 Dec 29 00:19:40.793 |
| Minimum distance | 4.972 km |
| Height difference | 4.710 km |
| Relative speed | 12.681 km/s |
| Angle between velocity vectors | 118° |
| Geographic position | 74.0°N, 115.4°E |
| Height | 883 km |
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