| Primary satellite | Secondary satellite |
| Name | Oscar 19 | IRIDIUM 156 |
| Spacetrack catalog number | 20442 | 43576 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2023 Jun 03 21:45 | 2023 Jun 04 01:50 |
| Time of closest approach (UTC) | 2023 Apr 04 06:10:21.989 |
| Minimum distance | 608.110 km |
| Height difference | 3.813 km |
| Relative speed | 12.725 km/s |
| Angle between velocity vectors | 117° |
| Geographic position | 79.9°N, 84.2°E |
| Height | 790 km |
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