| Primary satellite | Secondary satellite |
| Name | Sich 1 Rocket | Oscar 11 |
| Spacetrack catalog number | 23659 | 14781 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 11:19 | 2021 Jan 20 12:30 |
| Time of closest approach (UTC) | 2020 Dec 08 05:26:54.085 |
| Minimum distance | 4.232 km |
| Height difference | -2.498 km |
| Relative speed | 14.188 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 82.0°N, 116.0°E |
| Height | 637 km |
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