| Primary satellite | Secondary satellite |
| Name | Oscar 19 | IRIDIUM 129 |
| Spacetrack catalog number | 20442 | 42958 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Sep 19 10:41 | 2024 Sep 19 11:56 |
| Time of closest approach (UTC) | 2023 Sep 23 06:13:16.883 |
| Minimum distance | 1741.077 km |
| Height difference | -12.366 km |
| Relative speed | 14.833 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 56.0°N, 135.9°E |
| Height | 799 km |
|