| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1275r K |
| Spacetrack catalog number | 31834 | 12655 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 16 21:40 | 2024 Dec 23 05:49 |
| Time of closest approach (UTC) | 2024 Dec 25 09:58:38.224 |
| Minimum distance | 4.244 km |
| Height difference | 3.448 km |
| Relative speed | 4.196 km/s |
| Angle between velocity vectors | 33° |
| Geographic position | 61.9°N, 166.2°W |
| Height | 959 km |
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