| Primary satellite | Secondary satellite |
| Name | Cosmos 1782 Rocket | COSMOS 2535 DEB |
| Spacetrack catalog number | 16987 | 44640 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 21 21:11 | 2021 Jan 21 20:38 |
| Time of closest approach (UTC) | 2020 Dec 06 09:17:53.165 |
| Minimum distance | 0.653 km |
| Height difference | -0.558 km |
| Relative speed | 15.142 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 60.2°N, 0.7°E |
| Height | 619 km |
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