| Primary satellite | Secondary satellite |
| Name | Cosmos 1743 | LEMUR 2 DUSTINTHEWIND |
| Spacetrack catalog number | 16719 | 44406 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:53 | 2021 Jan 17 20:07 |
| Time of closest approach (UTC) | 2020 Dec 01 01:22:39.875 |
| Minimum distance | 184.969 km |
| Height difference | -0.088 km |
| Relative speed | 11.829 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 79.6°S, 32.0°W |
| Height | 539 km |
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