| Primary satellite | Secondary satellite |
| Name | Envisat | AO-91 |
| Spacetrack catalog number | 27386 | 43017 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Nov 28 20:46 | 2023 Nov 28 15:59 |
| Time of closest approach (UTC) | 2023 Oct 04 01:15:28.291 |
| Minimum distance | 417.674 km |
| Height difference | -1.703 km |
| Relative speed | 9.979 km/s |
| Angle between velocity vectors | 85° |
| Geographic position | 77.8°S, 107.0°W |
| Height | 791 km |
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