| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | CSL-04 Debris |
| Spacetrack catalog number | 31012 | 25733 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:22 | 2024 Dec 23 02:21 |
| Time of closest approach (UTC) | 2024 Dec 29 06:16:37.889 |
| Minimum distance | 4.348 km |
| Height difference | 3.284 km |
| Relative speed | 14.376 km/s |
| Angle between velocity vectors | 151° |
| Geographic position | 52.0°N, 44.9°E |
| Height | 845 km |
|