| Primary satellite | Secondary satellite |
| Name | Cosmos 1733 | ZHUHAI-1 OHS-04 |
| Spacetrack catalog number | 16611 | 43443 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 11:47 | 2021 Jan 20 17:27 |
| Time of closest approach (UTC) | 2020 Dec 07 10:18:37.090 |
| Minimum distance | 148.141 km |
| Height difference | 4.375 km |
| Relative speed | 15.147 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 78.9°S, 148.2°W |
| Height | 531 km |
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