| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 39586 | 30417 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 02:55 | 2024 Dec 22 22:02 |
| Time of closest approach (UTC) | 2024 Dec 25 13:14:20.008 |
| Minimum distance | 2.663 km |
| Height difference | 2.590 km |
| Relative speed | 14.243 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 72.2°N, 90.7°W |
| Height | 831 km |
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