| Primary satellite | Secondary satellite |
| Name | Cosmos 1892 | FLOCK 4V 20 |
| Spacetrack catalog number | 18421 | 46612 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 04:29 | 2021 Feb 25 10:27 |
| Time of closest approach (UTC) | 2021 Jan 22 09:42:10.963 |
| Minimum distance | 496.427 km |
| Height difference | 4.515 km |
| Relative speed | 5.779 km/s |
| Angle between velocity vectors | 45° |
| Geographic position | 68.0°S, 11.8°W |
| Height | 546 km |
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