| Primary satellite | Secondary satellite |
| Name | Sich 1 | SL-24 R/B |
| Spacetrack catalog number | 23657 | 31699 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 10 13:25 | 2021 Apr 10 11:06 |
| Time of closest approach (UTC) | 2021 Mar 06 20:54:01.061 |
| Minimum distance | 2.416 km |
| Height difference | 1.925 km |
| Relative speed | 15.180 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 82.5°S, 136.6°W |
| Height | 622 km |
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