| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-397 |
| Spacetrack catalog number | 30606 | 5144 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:42 | 2024 Dec 22 10:04 |
| Time of closest approach (UTC) | 2024 Dec 23 23:46:18.006 |
| Minimum distance | 0.620 km |
| Height difference | -0.358 km |
| Relative speed | 4.373 km/s |
| Angle between velocity vectors | 34° |
| Geographic position | 17.8°N, 79.1°W |
| Height | 832 km |
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