| Primary satellite | Secondary satellite |
| Name | SJ-12 | STARLINK-4261 |
| Spacetrack catalog number | 36596 | 52868 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Dec 05 03:51 | 2025 Dec 04 12:55 |
| Time of closest approach (UTC) | 2025 May 01 21:55:15.157 |
| Minimum distance | 1047.135 km |
| Height difference | -20.257 km |
| Relative speed | 14.054 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 54.6°S, 106.7°E |
| Height | 579 km |
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