| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | Kosmos-1000 |
| Spacetrack catalog number | 20046 | 10776 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 15 12:14 | 2021 Jan 15 13:21 |
| Time of closest approach (UTC) | 2020 Nov 30 02:24:52.079 |
| Minimum distance | 45.281 km |
| Height difference | 2.496 km |
| Relative speed | 4.153 km/s |
| Angle between velocity vectors | 33° |
| Geographic position | 82.7°S, 128.1°W |
| Height | 1021 km |
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