| Primary satellite | Secondary satellite |
| Name | Envisat | Iridium 71 |
| Spacetrack catalog number | 27386 | 25320 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Apr 25 12:00 | 2025 Apr 25 11:58 |
| Time of closest approach (UTC) | 2024 Apr 23 19:21:29.711 |
| Minimum distance | 896.182 km |
| Height difference | -3.782 km |
| Relative speed | 14.901 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 29.0°N, 118.5°E |
| Height | 765 km |
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