| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 29919 | 19047 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:14 | 2024 Dec 23 01:45 |
| Time of closest approach (UTC) | 2024 Dec 24 21:11:26.195 |
| Minimum distance | 1.495 km |
| Height difference | 0.929 km |
| Relative speed | 14.864 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 63.0°S, 66.1°W |
| Height | 873 km |
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