| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33938 | 29809 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:12 | 2024 Dec 22 19:46 |
| Time of closest approach (UTC) | 2024 Dec 29 04:43:44.873 |
| Minimum distance | 1.550 km |
| Height difference | -1.447 km |
| Relative speed | 14.862 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 52.0°N, 126.6°E |
| Height | 762 km |
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