| Primary satellite | Secondary satellite |
| Name | Cosmos 1743 | OBJECT E |
| Spacetrack catalog number | 16719 | 43666 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 14 20:25 | 2021 Jan 15 10:18 |
| Time of closest approach (UTC) | 2020 Dec 03 19:56:12.178 |
| Minimum distance | 6.532 km |
| Height difference | 4.324 km |
| Relative speed | 15.143 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 82.6°S, 86.2°E |
| Height | 541 km |
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