| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | COSMOS 2540 |
| Spacetrack catalog number | 20046 | 44517 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 15 12:14 | 2021 Jan 15 12:43 |
| Time of closest approach (UTC) | 2020 Dec 05 15:45:47.569 |
| Minimum distance | 37.655 km |
| Height difference | 2.539 km |
| Relative speed | 10.678 km/s |
| Angle between velocity vectors | 93° |
| Geographic position | 78.4°N, 89.9°W |
| Height | 954 km |
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