| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 31275 | 12672 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:31 | 2024 Dec 23 03:18 |
| Time of closest approach (UTC) | 2024 Dec 27 23:28:49.155 |
| Minimum distance | 2.824 km |
| Height difference | -1.783 km |
| Relative speed | 14.602 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 78.3°N, 92.1°W |
| Height | 978 km |
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