| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34814 | 35245 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:55 | 2024 Dec 23 03:45 |
| Time of closest approach (UTC) | 2024 Dec 26 22:39:04.229 |
| Minimum distance | 1.050 km |
| Height difference | -1.050 km |
| Relative speed | 14.864 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 15.5°N, 176.3°W |
| Height | 818 km |
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