| Primary satellite | Secondary satellite |
| Name | SL-16 Debris | deb Kosmos-397 |
| Spacetrack catalog number | 25411 | 5416 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 05:19 | 2024 Dec 22 20:36 |
| Time of closest approach (UTC) | 2024 Dec 23 13:26:11.871 |
| Minimum distance | 4.811 km |
| Height difference | -2.634 km |
| Relative speed | 12.228 km/s |
| Angle between velocity vectors | 112° |
| Geographic position | 48.9°S, 59.7°W |
| Height | 976 km |
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