| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Delta 139 |
| Spacetrack catalog number | 30959 | 12284 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 11:11 | 2024 Dec 23 05:16 |
| Time of closest approach (UTC) | 2024 Dec 23 23:06:56.286 |
| Minimum distance | 4.233 km |
| Height difference | -4.228 km |
| Relative speed | 14.711 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 0.3°N, 179.2°E |
| Height | 821 km |
|