| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1066 Rocket |
| Spacetrack catalog number | 31914 | 11166 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:38 | 2024 Dec 23 03:37 |
| Time of closest approach (UTC) | 2024 Dec 25 21:48:47.025 |
| Minimum distance | 4.303 km |
| Height difference | -2.884 km |
| Relative speed | 14.879 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 6.7°S, 54.5°W |
| Height | 805 km |
|