| Primary satellite | Secondary satellite |
| Name | SJ-12 | STARLINK-3585 |
| Spacetrack catalog number | 36596 | 51875 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Dec 05 03:51 | 2025 Dec 04 14:24 |
| Time of closest approach (UTC) | 2025 May 01 10:55:13.633 |
| Minimum distance | 3438.656 km |
| Height difference | -15.717 km |
| Relative speed | 14.871 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 81.4°S, 140.7°W |
| Height | 588 km |
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