| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31663 | 34457 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:19 | 2024 Dec 22 17:06 |
| Time of closest approach (UTC) | 2024 Dec 26 02:51:25.768 |
| Minimum distance | 4.799 km |
| Height difference | -1.490 km |
| Relative speed | 14.146 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 73.7°S, 120.1°W |
| Height | 538 km |
|