| Primary satellite | Secondary satellite |
| Name | Cosmos 1048 | FENGYUN 1C DEB |
| Spacetrack catalog number | 11111 | 31510 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:57 | 2024 Dec 20 19:19 |
| Time of closest approach (UTC) | 2024 Dec 27 06:56:01.448 |
| Minimum distance | 4.707 km |
| Height difference | 4.562 km |
| Relative speed | 13.279 km/s |
| Angle between velocity vectors | 126° |
| Geographic position | 74.1°S, 46.8°W |
| Height | 811 km |
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