| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1408 Rocket |
| Spacetrack catalog number | 31877 | 13553 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 21:23 | 2024 Dec 22 14:49 |
| Time of closest approach (UTC) | 2024 Dec 28 21:20:50.487 |
| Minimum distance | 4.816 km |
| Height difference | 4.727 km |
| Relative speed | 15.058 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 71.4°N, 71.8°W |
| Height | 631 km |
|