| Primary satellite | Secondary satellite |
| Name | Envisat | FENGYUN 1C DEB |
| Spacetrack catalog number | 27386 | 29844 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Dec 04 21:52 | 2023 Dec 04 21:04 |
| Time of closest approach (UTC) | 2023 Oct 04 14:38:54.365 |
| Minimum distance | 873.825 km |
| Height difference | 6.685 km |
| Relative speed | 11.344 km/s |
| Angle between velocity vectors | 99° |
| Geographic position | 72.3°S, 37.2°E |
| Height | 789 km |
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