| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35703 | 36203 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 19:48 | 2024 Dec 18 23:24 |
| Time of closest approach (UTC) | 2024 Dec 29 00:04:55.544 |
| Minimum distance | 2.609 km |
| Height difference | -0.306 km |
| Relative speed | 13.001 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 74.0°N, 14.4°E |
| Height | 632 km |
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