| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 29948 | 12758 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:50 | 2024 Dec 22 19:53 |
| Time of closest approach (UTC) | 2024 Dec 28 06:46:52.109 |
| Minimum distance | 2.678 km |
| Height difference | -0.073 km |
| Relative speed | 13.860 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 81.2°S, 120.2°W |
| Height | 946 km |
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