| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35453 | 31541 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 15:23 | 2024 Dec 22 03:32 |
| Time of closest approach (UTC) | 2024 Dec 25 12:21:26.398 |
| Minimum distance | 1.594 km |
| Height difference | 1.087 km |
| Relative speed | 14.597 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 69.2°N, 160.8°E |
| Height | 760 km |
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