| Primary satellite | Secondary satellite |
| Name | OBJECT D | STARLINK-3551 |
| Spacetrack catalog number | 51949 | 51887 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Nov 07 06:34 | 2025 Nov 06 18:01 |
| Time of closest approach (UTC) | 2025 Oct 23 02:24:21.646 |
| Minimum distance | 61.810 km |
| Height difference | -7.666 km |
| Relative speed | 9.968 km/s |
| Angle between velocity vectors | 82° |
| Geographic position | 45.7°S, 140.3°E |
| Height | 563 km |
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