| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34913 | 30389 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 22 16:32 |
| Time of closest approach (UTC) | 2024 Dec 26 08:52:20.667 |
| Minimum distance | 2.793 km |
| Height difference | 0.102 km |
| Relative speed | 14.137 km/s |
| Angle between velocity vectors | 142° |
| Geographic position | 73.0°N, 46.5°E |
| Height | 778 km |
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