| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 29973 | 17615 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:36 | 2024 Dec 22 23:49 |
| Time of closest approach (UTC) | 2024 Dec 26 04:05:07.152 |
| Minimum distance | 1.657 km |
| Height difference | 0.116 km |
| Relative speed | 14.896 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 63.0°N, 170.1°W |
| Height | 843 km |
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