| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | YAOGAN-40 01A |
| Spacetrack catalog number | 29796 | 57830 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 16:38 | 2024 Dec 23 04:00 |
| Time of closest approach (UTC) | 2024 Dec 26 05:35:33.844 |
| Minimum distance | 4.300 km |
| Height difference | -3.322 km |
| Relative speed | 10.632 km/s |
| Angle between velocity vectors | 91° |
| Geographic position | 80.4°N, 117.9°E |
| Height | 867 km |
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