| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 1408 DEB |
| Spacetrack catalog number | 31877 | 49527 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 21:23 | 2024 Dec 22 22:37 |
| Time of closest approach (UTC) | 2024 Dec 25 19:36:09.754 |
| Minimum distance | 4.752 km |
| Height difference | -4.272 km |
| Relative speed | 14.924 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 34.6°N, 168.2°E |
| Height | 687 km |
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