| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34588 | 31817 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:00 | 2024 Dec 18 04:29 |
| Time of closest approach (UTC) | 2024 Dec 24 00:02:59.177 |
| Minimum distance | 3.526 km |
| Height difference | -2.848 km |
| Relative speed | 12.905 km/s |
| Angle between velocity vectors | 120° |
| Geographic position | 74.1°S, 14.9°E |
| Height | 780 km |
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