| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35031 | 30168 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 22 18:52 |
| Time of closest approach (UTC) | 2024 Dec 24 22:03:50.863 |
| Minimum distance | 4.216 km |
| Height difference | 3.193 km |
| Relative speed | 9.781 km/s |
| Angle between velocity vectors | 82° |
| Geographic position | 71.3°S, 67.1°E |
| Height | 792 km |
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