| Primary satellite | Secondary satellite |
| Name | MOS 1 Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 17528 | 19025 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 19 12:23 | 2021 Jan 19 11:39 |
| Time of closest approach (UTC) | 2020 Dec 01 15:34:03.623 |
| Minimum distance | 6.293 km |
| Height difference | 1.603 km |
| Relative speed | 14.829 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 52.5°N, 51.4°E |
| Height | 838 km |
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