| Primary satellite | Secondary satellite |
| Name | SJ-12 | S-NET B |
| Spacetrack catalog number | 36596 | 43187 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:17 | 2021 Mar 05 18:04 |
| Time of closest approach (UTC) | 2021 Jan 20 12:26:15.741 |
| Minimum distance | 516.503 km |
| Height difference | -1.084 km |
| Relative speed | 9.702 km/s |
| Angle between velocity vectors | 80° |
| Geographic position | 81.5°N, 51.3°W |
| Height | 597 km |
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