| Primary satellite | Secondary satellite |
| Name | Cosmos 1782 Rocket | Cosmos 1328 Rocket |
| Spacetrack catalog number | 16987 | 12988 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 21 21:11 | 2021 Jan 21 18:05 |
| Time of closest approach (UTC) | 2020 Dec 03 08:37:16.299 |
| Minimum distance | 15.162 km |
| Height difference | 2.767 km |
| Relative speed | 13.039 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 75.0°N, 154.2°E |
| Height | 625 km |
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