| Primary satellite | Secondary satellite |
| Name | Cosmos 1934 Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 18986 | 12699 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 10:27 | 2021 Jan 17 10:40 |
| Time of closest approach (UTC) | 2020 Dec 08 21:30:25.913 |
| Minimum distance | 8.923 km |
| Height difference | -0.633 km |
| Relative speed | 13.851 km/s |
| Angle between velocity vectors | 141° |
| Geographic position | 68.4°N, 155.6°E |
| Height | 1012 km |
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