| Primary satellite | Secondary satellite |
| Name | BIRKELAND | SJ-6B |
| Spacetrack catalog number | 55015 | 28415 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2025 Nov 13 06:07 | 2025 Nov 13 01:45 |
| Time of closest approach (UTC) | 2025 Oct 18 07:45:25.358 |
| Minimum distance | 119.460 km |
| Height difference | -6.268 km |
| Relative speed | 4.139 km/s |
| Angle between velocity vectors | 31° |
| Geographic position | 82.5°N, 108.8°E |
| Height | 485 km |
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