| Primary satellite | Secondary satellite |
| Name | Oscar 19 | IRIDIUM 173 |
| Spacetrack catalog number | 20442 | 43925 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2023 May 29 16:06 | 2023 May 29 08:31 |
| Time of closest approach (UTC) | 2023 Apr 01 16:14:20.781 |
| Minimum distance | 476.136 km |
| Height difference | 2.996 km |
| Relative speed | 7.280 km/s |
| Angle between velocity vectors | 58° |
| Geographic position | 78.4°N, 138.0°W |
| Height | 790 km |
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