| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | Cosmos 1809 Rocket |
| Spacetrack catalog number | 20046 | 17242 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:59 | 2021 Jan 17 16:10 |
| Time of closest approach (UTC) | 2020 Nov 28 21:41:23.396 |
| Minimum distance | 28.967 km |
| Height difference | -4.494 km |
| Relative speed | 2.214 km/s |
| Angle between velocity vectors | 17° |
| Geographic position | 82.5°N, 160.0°E |
| Height | 961 km |
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