| Primary satellite | Secondary satellite |
| Name | Oscar 19 | IRIDIUM 143 |
| Spacetrack catalog number | 20442 | 43258 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 22:30 | 2024 Dec 22 20:45 |
| Time of closest approach (UTC) | 2024 Dec 28 23:45:04.220 |
| Minimum distance | 4.597 km |
| Height difference | 1.133 km |
| Relative speed | 14.527 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 76.5°S, 44.7°E |
| Height | 805 km |
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