| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 20046 | 12712 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 12:14 | 2021 Jan 15 05:10 |
| Time of closest approach (UTC) | 2020 Dec 07 03:25:20.644 |
| Minimum distance | 61.218 km |
| Height difference | 4.210 km |
| Relative speed | 5.830 km/s |
| Angle between velocity vectors | 47° |
| Geographic position | 82.5°S, 161.7°W |
| Height | 1027 km |
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