| Primary satellite | Secondary satellite |
| Name | Cosmos 1733 | XY S 1 |
| Spacetrack catalog number | 16611 | 41913 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 11:47 | 2021 Jan 20 17:45 |
| Time of closest approach (UTC) | 2020 Dec 04 15:06:10.804 |
| Minimum distance | 24.938 km |
| Height difference | 1.138 km |
| Relative speed | 15.170 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 82.2°N, 30.3°E |
| Height | 536 km |
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