| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 37966 | 30619 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 08:48 | 2024 Dec 23 01:25 |
| Time of closest approach (UTC) | 2024 Dec 28 15:04:25.832 |
| Minimum distance | 3.479 km |
| Height difference | 3.469 km |
| Relative speed | 15.114 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 48.5°N, 57.0°E |
| Height | 614 km |
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