| Primary satellite | Secondary satellite |
| Name | deb Feng Yun 1B | deb Kosmos-397 |
| Spacetrack catalog number | 23258 | 5527 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 04:46 | 2024 Dec 22 23:18 |
| Time of closest approach (UTC) | 2024 Dec 29 14:51:47.694 |
| Minimum distance | 2.070 km |
| Height difference | -1.083 km |
| Relative speed | 14.597 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 46.9°S, 159.0°W |
| Height | 843 km |
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