| Primary satellite | Secondary satellite |
| Name | AO-73 | IXPE |
| Spacetrack catalog number | 39444 | 49954 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2023 Jun 04 11:22 | 2023 Jun 04 07:14 |
| Time of closest approach (UTC) | 2023 Mar 24 17:45:54.019 |
| Minimum distance | 1914.842 km |
| Height difference | -1.309 km |
| Relative speed | 11.602 km/s |
| Angle between velocity vectors | 100° |
| Geographic position | 12.2°N, 144.2°E |
| Height | 578 km |
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