| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35824 | 30441 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 06:36 | 2024 Dec 22 20:26 |
| Time of closest approach (UTC) | 2024 Dec 28 03:05:35.519 |
| Minimum distance | 2.881 km |
| Height difference | -2.713 km |
| Relative speed | 14.459 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 50.3°S, 125.2°E |
| Height | 1075 km |
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