| Primary satellite | Secondary satellite |
| Name | STRAND 1 | IRIDIUM 137 |
| Spacetrack catalog number | 39090 | 43076 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2025 Jul 19 22:13 | 2025 Jul 19 16:36 |
| Time of closest approach (UTC) | 2024 Jul 30 17:23:37.570 |
| Minimum distance | 3573.686 km |
| Height difference | 2.467 km |
| Relative speed | 14.904 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 5.2°S, 169.3°W |
| Height | 777 km |
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