| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 37530 | 29842 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 01:13 | 2024 Dec 23 03:48 |
| Time of closest approach (UTC) | 2024 Dec 28 17:09:52.206 |
| Minimum distance | 3.789 km |
| Height difference | -1.084 km |
| Relative speed | 14.820 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 14.5°S, 81.6°E |
| Height | 801 km |
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