| Primary satellite | Secondary satellite |
| Name | Oscar 19 | IRIDIUM 100 |
| Spacetrack catalog number | 20442 | 42956 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2023 Dec 05 11:30 | 2023 Dec 05 05:50 |
| Time of closest approach (UTC) | 2023 Sep 27 22:00:06.734 |
| Minimum distance | 113.509 km |
| Height difference | 2.727 km |
| Relative speed | 14.829 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 67.0°S, 65.4°W |
| Height | 800 km |
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