| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2549 |
| Spacetrack catalog number | 30822 | 47546 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 00:42 | 2024 Dec 23 04:52 |
| Time of closest approach (UTC) | 2024 Dec 28 04:23:57.491 |
| Minimum distance | 1.745 km |
| Height difference | 1.001 km |
| Relative speed | 14.646 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 20.3°S, 125.9°W |
| Height | 908 km |
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