| Primary satellite | Secondary satellite |
| Name | Cosmos 1833 Rocket | Sep Motor Cover |
| Spacetrack catalog number | 17590 | 20628 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 20 02:06 | 2021 Jan 19 20:54 |
| Time of closest approach (UTC) | 2020 Dec 03 00:05:08.677 |
| Minimum distance | 27.741 km |
| Height difference | 3.259 km |
| Relative speed | 14.050 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 16.5°S, 73.0°W |
| Height | 844 km |
|