| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35605 | 31436 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 17:09 | 2024 Dec 20 22:50 |
| Time of closest approach (UTC) | 2024 Dec 25 02:01:06.669 |
| Minimum distance | 4.479 km |
| Height difference | -3.730 km |
| Relative speed | 14.994 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 47.8°S, 55.8°E |
| Height | 663 km |
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