| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34459 | 31333 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 09:30 | 2024 Dec 19 07:37 |
| Time of closest approach (UTC) | 2024 Dec 27 05:43:15.943 |
| Minimum distance | 1.194 km |
| Height difference | -1.175 km |
| Relative speed | 12.798 km/s |
| Angle between velocity vectors | 117° |
| Geographic position | 74.1°S, 127.1°W |
| Height | 791 km |
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