| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 30654 | 18601 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:50 | 2024 Dec 20 06:21 |
| Time of closest approach (UTC) | 2024 Dec 29 20:54:49.057 |
| Minimum distance | 3.163 km |
| Height difference | 0.709 km |
| Relative speed | 14.822 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 62.5°N, 54.8°E |
| Height | 865 km |
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