| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35789 | 38147 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 20 18:36 |
| Time of closest approach (UTC) | 2024 Dec 23 20:22:01.194 |
| Minimum distance | 1.388 km |
| Height difference | -1.091 km |
| Relative speed | 14.721 km/s |
| Angle between velocity vectors | 162° |
| Geographic position | 63.3°S, 140.9°E |
| Height | 808 km |
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