| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 35123 | 12733 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 17 17:10 | 2024 Dec 23 01:01 |
| Time of closest approach (UTC) | 2024 Dec 28 16:13:14.980 |
| Minimum distance | 3.422 km |
| Height difference | 0.697 km |
| Relative speed | 14.889 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 54.8°S, 160.2°W |
| Height | 814 km |
|