| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-381 |
| Spacetrack catalog number | 38824 | 5225 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 13:27 | 2024 Dec 22 09:17 |
| Time of closest approach (UTC) | 2024 Dec 25 13:48:44.857 |
| Minimum distance | 4.683 km |
| Height difference | 0.906 km |
| Relative speed | 14.313 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 70.7°S, 33.9°W |
| Height | 951 km |
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