| Primary satellite | Secondary satellite |
| Name | Envisat | IRIDIUM 33 DEB |
| Spacetrack catalog number | 27386 | 33776 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:47 | 2025 Nov 17 20:17 |
| Time of closest approach (UTC) | 2025 Oct 15 23:45:49.592 |
| Minimum distance | 16.084 km |
| Height difference | -2.447 km |
| Relative speed | 13.872 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 80.9°N, 106.0°E |
| Height | 775 km |
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