| Primary satellite | Secondary satellite |
| Name | Envisat | Cosmos 841 |
| Spacetrack catalog number | 27386 | 9022 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Dec 07 02:02 | 2023 Dec 06 01:18 |
| Time of closest approach (UTC) | 2023 Sep 25 03:36:16.290 |
| Minimum distance | 10.497 km |
| Height difference | 0.162 km |
| Relative speed | 11.270 km/s |
| Angle between velocity vectors | 98° |
| Geographic position | 73.0°S, 155.5°W |
| Height | 790 km |
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