| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 36987 | 12659 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 18 00:47 | 2024 Dec 23 05:40 |
| Time of closest approach (UTC) | 2024 Dec 24 10:47:35.339 |
| Minimum distance | 1.845 km |
| Height difference | -1.297 km |
| Relative speed | 9.395 km/s |
| Angle between velocity vectors | 79° |
| Geographic position | 75.6°N, 178.3°E |
| Height | 992 km |
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