| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33905 | 30993 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:00 | 2024 Dec 23 03:31 |
| Time of closest approach (UTC) | 2024 Dec 29 22:36:04.254 |
| Minimum distance | 4.906 km |
| Height difference | -0.531 km |
| Relative speed | 14.535 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 68.8°N, 150.5°W |
| Height | 815 km |
|