| Primary satellite | Secondary satellite |
| Name | Sich 1 | SL-24 R/B |
| Spacetrack catalog number | 23657 | 36606 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 11 13:40 | 2021 Apr 10 23:55 |
| Time of closest approach (UTC) | 2021 Mar 02 08:37:36.440 |
| Minimum distance | 4.782 km |
| Height difference | -1.118 km |
| Relative speed | 15.211 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 82.2°S, 30.2°E |
| Height | 622 km |
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