| Primary satellite | Secondary satellite |
| Name | Cosmos 1743 | TSUBAME |
| Spacetrack catalog number | 16719 | 40302 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 14 20:25 | 2021 Jan 15 01:57 |
| Time of closest approach (UTC) | 2020 Nov 29 11:11:38.077 |
| Minimum distance | 2.051 km |
| Height difference | -0.277 km |
| Relative speed | 15.201 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 48.3°S, 147.4°E |
| Height | 528 km |
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