| Primary satellite | Secondary satellite |
| Name | OPAL | IRIDIUM 142 |
| Spacetrack catalog number | 26063 | 43256 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2021 Mar 05 17:26 | 2021 Mar 05 09:10 |
| Time of closest approach (UTC) | 2021 Jan 24 01:48:48.533 |
| Minimum distance | 89.405 km |
| Height difference | 2.902 km |
| Relative speed | 11.688 km/s |
| Angle between velocity vectors | 103° |
| Geographic position | 79.8°N, 45.8°E |
| Height | 789 km |
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