| Primary satellite | Secondary satellite |
| Name | Cosmos 1733 | ZHUHAI-1 OHS-01 |
| Spacetrack catalog number | 16611 | 43439 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 03:53 | 2021 Jan 20 11:16 |
| Time of closest approach (UTC) | 2020 Dec 03 04:58:06.261 |
| Minimum distance | 4.413 km |
| Height difference | 4.189 km |
| Relative speed | 15.196 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 65.9°S, 84.6°W |
| Height | 529 km |
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