| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 31633 | 17637 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 20:14 | 2024 Dec 22 00:16 |
| Time of closest approach (UTC) | 2024 Dec 24 05:42:33.466 |
| Minimum distance | 3.655 km |
| Height difference | -3.652 km |
| Relative speed | 14.732 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 76.0°S, 16.4°W |
| Height | 952 km |
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