| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35031 | 36647 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 20 11:29 |
| Time of closest approach (UTC) | 2024 Dec 28 06:07:46.155 |
| Minimum distance | 4.538 km |
| Height difference | -1.627 km |
| Relative speed | 9.353 km/s |
| Angle between velocity vectors | 77° |
| Geographic position | 71.2°S, 129.7°W |
| Height | 795 km |
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