| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33986 | 30731 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:32 | 2024 Dec 23 03:29 |
| Time of closest approach (UTC) | 2024 Dec 24 12:34:18.366 |
| Minimum distance | 4.250 km |
| Height difference | -4.122 km |
| Relative speed | 14.860 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 25.7°S, 143.4°E |
| Height | 794 km |
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