| 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 19:25:25.018 |
| Minimum distance | 4.409 km |
| Height difference | 1.150 km |
| Relative speed | 14.992 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 21.5°N, 174.0°W |
| Height | 756 km |
|