| Primary satellite | Secondary satellite |
| Name | SJ-12 | S-NET D |
| Spacetrack catalog number | 36596 | 43186 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:17 | 2021 Mar 05 16:28 |
| Time of closest approach (UTC) | 2021 Jan 21 10:05:50.109 |
| Minimum distance | 491.086 km |
| Height difference | 1.579 km |
| Relative speed | 9.695 km/s |
| Angle between velocity vectors | 80° |
| Geographic position | 81.5°S, 163.0°E |
| Height | 597 km |
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