| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 31810 | 12663 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 18:39 | 2024 Dec 23 02:28 |
| Time of closest approach (UTC) | 2024 Dec 28 07:44:06.896 |
| Minimum distance | 2.368 km |
| Height difference | -0.466 km |
| Relative speed | 14.702 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 71.3°S, 166.4°W |
| Height | 929 km |
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