| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-249 |
| Spacetrack catalog number | 30905 | 3790 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 10:35 | 2024 Dec 22 05:58 |
| Time of closest approach (UTC) | 2024 Dec 29 09:55:30.344 |
| Minimum distance | 4.580 km |
| Height difference | -3.808 km |
| Relative speed | 14.678 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 23.8°S, 2.9°E |
| Height | 890 km |
|