| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Rex-II |
| Spacetrack catalog number | 31888 | 23814 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 16:28 | 2024 Dec 22 22:59 |
| Time of closest approach (UTC) | 2024 Dec 25 13:48:27.699 |
| Minimum distance | 3.990 km |
| Height difference | 2.042 km |
| Relative speed | 9.412 km/s |
| Angle between velocity vectors | 78° |
| Geographic position | 80.7°N, 141.3°W |
| Height | 802 km |
|