| Primary satellite | Secondary satellite |
| Name | Cosmos 1655 Rocket | Cosmos 1275r K |
| Spacetrack catalog number | 15752 | 12655 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 15 04:41 | 2021 Jan 14 17:35 |
| Time of closest approach (UTC) | 2020 Dec 05 20:04:37.470 |
| Minimum distance | 7.365 km |
| Height difference | -4.671 km |
| Relative speed | 14.418 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 49.5°N, 83.5°E |
| Height | 1013 km |
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