| Primary satellite | Secondary satellite |
| Name | Envisat | FENGYUN 1C DEB |
| Spacetrack catalog number | 27386 | 32212 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 24 11:52 | 2021 Jan 24 10:09 |
| Time of closest approach (UTC) | 2020 Nov 29 04:02:53.720 |
| Minimum distance | 18.844 km |
| Height difference | -3.839 km |
| Relative speed | 13.643 km/s |
| Angle between velocity vectors | 132° |
| Geographic position | 67.6°S, 136.5°W |
| Height | 790 km |
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