| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb REX |
| Spacetrack catalog number | 29773 | 21712 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 09:12 | 2024 Dec 22 19:20 |
| Time of closest approach (UTC) | 2024 Dec 29 07:30:34.410 |
| Minimum distance | 2.907 km |
| Height difference | 2.661 km |
| Relative speed | 13.778 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 78.1°S, 64.1°E |
| Height | 807 km |
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