| Primary satellite | Secondary satellite |
| Name | COSMOS 1275 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 42120 | 30545 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 05:14 | 2024 Dec 22 12:17 |
| Time of closest approach (UTC) | 2024 Dec 28 01:22:08.353 |
| Minimum distance | 2.056 km |
| Height difference | 1.848 km |
| Relative speed | 14.671 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 61.7°N, 121.8°E |
| Height | 1077 km |
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