| Primary satellite | Secondary satellite |
| Name | ONEWEB-0421 | IRIDIUM 33 DEB |
| Spacetrack catalog number | 50496 | 34702 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jan 29 22:00 | 2023 Jan 28 22:49 |
| Time of closest approach (UTC) | 2022 Dec 07 13:25:57.156 |
| Minimum distance | 878.002 km |
| Height difference | -508.192 km |
| Relative speed | 14.734 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 84.2°S, 67.3°W |
| Height | 1226 km |
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