| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31444 | 33782 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 13:31 | 2024 Dec 22 14:37 |
| Time of closest approach (UTC) | 2024 Dec 27 12:26:52.804 |
| Minimum distance | 3.149 km |
| Height difference | 2.929 km |
| Relative speed | 8.452 km/s |
| Angle between velocity vectors | 69° |
| Geographic position | 67.4°S, 144.6°E |
| Height | 787 km |
|