| Primary satellite | Secondary satellite |
| Name | Envisat | IRIDIUM 33 DEB |
| Spacetrack catalog number | 27386 | 34366 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Dec 07 02:02 | 2023 Dec 06 13:07 |
| Time of closest approach (UTC) | 2023 Sep 22 14:38:11.771 |
| Minimum distance | 773.191 km |
| Height difference | -5.512 km |
| Relative speed | 14.858 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 78.6°N, 123.6°W |
| Height | 778 km |
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