| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33841 | 31010 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 16:25 | 2024 Dec 22 12:45 |
| Time of closest approach (UTC) | 2024 Dec 25 17:44:28.707 |
| Minimum distance | 4.792 km |
| Height difference | -0.423 km |
| Relative speed | 14.994 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 19.1°N, 149.4°W |
| Height | 756 km |
|