| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35462 | 30017 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 23 00:54 |
| Time of closest approach (UTC) | 2024 Dec 23 22:05:57.128 |
| Minimum distance | 3.989 km |
| Height difference | 1.734 km |
| Relative speed | 14.775 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 40.4°S, 40.7°W |
| Height | 819 km |
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