| Primary satellite | Secondary satellite |
| Name | Cosmos 1933 Rocket | CSL-04 DEB |
| Spacetrack catalog number | 18959 | 26193 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 13:39 | 2021 Apr 11 14:46 |
| Time of closest approach (UTC) | 2021 Feb 25 05:25:46.292 |
| Minimum distance | 3.102 km |
| Height difference | 1.928 km |
| Relative speed | 14.981 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 80.3°S, 163.5°E |
| Height | 646 km |
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