| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | Kosmos-1864 |
| Spacetrack catalog number | 20046 | 18160 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:59 | 2021 Jan 17 21:13 |
| Time of closest approach (UTC) | 2020 Nov 30 00:47:36.801 |
| Minimum distance | 14.377 km |
| Height difference | 1.216 km |
| Relative speed | 13.954 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 66.1°S, 14.7°W |
| Height | 1024 km |
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