| Primary satellite | Secondary satellite |
| Name | COSMOS 1275 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 42188 | 29815 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:43 | 2024 Dec 22 11:24 |
| Time of closest approach (UTC) | 2024 Dec 28 16:52:27.052 |
| Minimum distance | 3.591 km |
| Height difference | -3.029 km |
| Relative speed | 14.819 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 57.2°S, 36.5°E |
| Height | 839 km |
|