| Primary satellite | Secondary satellite |
| Name | CRYOSAT 2 | FENGYUN 1C DEB |
| Spacetrack catalog number | 36508 | 37011 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 16 18:40 | 2021 Apr 15 05:10 |
| Time of closest approach (UTC) | 2021 Mar 05 02:04:50.262 |
| Minimum distance | 16.096 km |
| Height difference | 7.343 km |
| Relative speed | 14.875 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 24.2°S, 155.6°E |
| Height | 731 km |
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