| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31877 | 36369 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 21:23 | 2024 Dec 19 10:40 |
| Time of closest approach (UTC) | 2024 Dec 25 08:17:43.914 |
| Minimum distance | 4.188 km |
| Height difference | -0.351 km |
| Relative speed | 4.372 km/s |
| Angle between velocity vectors | 34° |
| Geographic position | 42.1°N, 20.3°W |
| Height | 684 km |
|