| Primary satellite | Secondary satellite |
| Name | CRYOSAT 2 | FENGYUN 1C DEB |
| Spacetrack catalog number | 36508 | 37402 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 22 11:57 | 2021 Apr 13 15:57 |
| Time of closest approach (UTC) | 2021 Mar 03 20:34:03.365 |
| Minimum distance | 91.896 km |
| Height difference | -1.134 km |
| Relative speed | 6.557 km/s |
| Angle between velocity vectors | 52° |
| Geographic position | 80.0°S, 131.3°W |
| Height | 750 km |
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