| Primary satellite | Secondary satellite |
| Name | SJ-12 | SOICAL CYLINDER |
| Spacetrack catalog number | 36596 | 4166 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:17 | 2021 Mar 05 12:49 |
| Time of closest approach (UTC) | 2021 Jan 22 05:26:52.961 |
| Minimum distance | 120.376 km |
| Height difference | 0.505 km |
| Relative speed | 14.648 km/s |
| Angle between velocity vectors | 151° |
| Geographic position | 63.1°S, 175.4°W |
| Height | 592 km |
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