| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 20046 | 12728 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:59 | 2021 Jan 17 19:18 |
| Time of closest approach (UTC) | 2020 Nov 30 20:45:27.417 |
| Minimum distance | 50.269 km |
| Height difference | -4.844 km |
| Relative speed | 10.414 km/s |
| Angle between velocity vectors | 89° |
| Geographic position | 79.8°N, 162.6°W |
| Height | 958 km |
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