| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 31537 | 12661 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 14:18 | 2024 Dec 23 09:47 |
| Time of closest approach (UTC) | 2024 Dec 24 08:51:24.793 |
| Minimum distance | 1.298 km |
| Height difference | 0.656 km |
| Relative speed | 14.673 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 6.5°S, 94.1°W |
| Height | 981 km |
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