| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35459 | 30893 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:06 | 2024 Dec 20 09:59 |
| Time of closest approach (UTC) | 2024 Dec 28 17:39:48.759 |
| Minimum distance | 2.814 km |
| Height difference | 2.166 km |
| Relative speed | 7.412 km/s |
| Angle between velocity vectors | 59° |
| Geographic position | 64.5°S, 75.9°E |
| Height | 805 km |
|