| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 30959 | 34387 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 11:11 | 2024 Dec 22 13:20 |
| Time of closest approach (UTC) | 2024 Dec 28 12:33:39.797 |
| Minimum distance | 3.900 km |
| Height difference | 3.838 km |
| Relative speed | 13.248 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 74.1°N, 58.5°W |
| Height | 775 km |
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