| Primary satellite | Secondary satellite |
| Name | Envisat | IRIDIUM 33 DEB |
| Spacetrack catalog number | 27386 | 34765 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:47 | 2025 Nov 16 12:08 |
| Time of closest approach (UTC) | 2025 Oct 18 07:29:43.242 |
| Minimum distance | 1.858 km |
| Height difference | -1.858 km |
| Relative speed | 14.883 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 55.5°S, 88.3°W |
| Height | 783 km |
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