| Primary satellite | Secondary satellite |
| Name | CAS-6 | FENGYUN 1C DEB |
| Spacetrack catalog number | 44881 | 29841 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Feb 28 01:08 | 2021 Feb 27 14:10 |
| Time of closest approach (UTC) | 2021 Jan 21 22:39:17.375 |
| Minimum distance | 5.579 km |
| Height difference | 5.430 km |
| Relative speed | 14.378 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 61.7°S, 166.0°E |
| Height | 658 km |
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