| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 20046 | 12667 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:59 | 2021 Jan 17 10:42 |
| Time of closest approach (UTC) | 2020 Nov 26 13:56:00.618 |
| Minimum distance | 30.140 km |
| Height difference | 2.613 km |
| Relative speed | 4.459 km/s |
| Angle between velocity vectors | 35° |
| Geographic position | 82.5°N, 79.8°W |
| Height | 964 km |
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