| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34913 | 30677 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 21 15:12 |
| Time of closest approach (UTC) | 2024 Dec 25 01:52:04.741 |
| Minimum distance | 3.860 km |
| Height difference | 3.715 km |
| Relative speed | 14.519 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 68.3°S, 47.6°W |
| Height | 815 km |
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