| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 31944 | 12727 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 18 02:56 | 2024 Dec 23 03:41 |
| Time of closest approach (UTC) | 2024 Dec 27 11:16:10.823 |
| Minimum distance | 1.164 km |
| Height difference | 0.655 km |
| Relative speed | 10.485 km/s |
| Angle between velocity vectors | 91° |
| Geographic position | 78.8°N, 176.3°E |
| Height | 983 km |
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