| Primary satellite | Secondary satellite |
| Name | Sich 1 Rocket | SJ-9B |
| Spacetrack catalog number | 23659 | 38861 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 11:19 | 2021 Jan 20 18:46 |
| Time of closest approach (UTC) | 2020 Dec 06 04:05:24.507 |
| Minimum distance | 4.038 km |
| Height difference | -1.430 km |
| Relative speed | 15.049 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 51.7°S, 62.6°E |
| Height | 657 km |
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