| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 29870 | 34685 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 21:21 | 2024 Dec 22 17:09 |
| Time of closest approach (UTC) | 2024 Dec 27 15:59:15.365 |
| Minimum distance | 3.862 km |
| Height difference | -2.626 km |
| Relative speed | 12.645 km/s |
| Angle between velocity vectors | 115° |
| Geographic position | 74.0°N, 146.7°W |
| Height | 742 km |
|