| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34572 | 30121 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:57 | 2024 Dec 23 04:55 |
| Time of closest approach (UTC) | 2024 Dec 26 18:32:29.586 |
| Minimum distance | 4.306 km |
| Height difference | 4.274 km |
| Relative speed | 14.852 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 30.3°N, 47.4°E |
| Height | 807 km |
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