| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33899 | 31048 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:32 | 2024 Dec 22 13:50 |
| Time of closest approach (UTC) | 2024 Dec 28 19:58:15.169 |
| Minimum distance | 3.247 km |
| Height difference | -2.909 km |
| Relative speed | 14.827 km/s |
| Angle between velocity vectors | 162° |
| Geographic position | 64.2°S, 151.3°W |
| Height | 707 km |
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