| Primary satellite | Secondary satellite |
| Name | Cosmos 1048 | FENGYUN 1C DEB |
| Spacetrack catalog number | 11111 | 29842 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:57 | 2024 Dec 23 03:48 |
| Time of closest approach (UTC) | 2024 Dec 25 22:57:48.227 |
| Minimum distance | 0.808 km |
| Height difference | 0.094 km |
| Relative speed | 14.793 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 49.8°S, 2.6°E |
| Height | 797 km |
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