| Primary satellite | Secondary satellite |
| Name | Courier 1B | ONEWEB-0647 |
| Spacetrack catalog number | 58 | 56079 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 Jun 21 16:44 | 2025 Jun 21 20:11 |
| Time of closest approach (UTC) | 2025 May 20 14:15:19.507 |
| Minimum distance | 33.826 km |
| Height difference | 0.899 km |
| Relative speed | 7.193 km/s |
| Angle between velocity vectors | 60° |
| Geographic position | 3.2°N, 114.6°W |
| Height | 1205 km |
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