| Primary satellite | Secondary satellite |
| Name | CZ-4B R/B | FENGYUN 1C DEB |
| Spacetrack catalog number | 27432 | 31817 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 18:34 | 2021 Mar 08 22:11 |
| Time of closest approach (UTC) | 2021 Jan 19 09:35:54.523 |
| Minimum distance | 35.682 km |
| Height difference | 4.477 km |
| Relative speed | 13.229 km/s |
| Angle between velocity vectors | 126° |
| Geographic position | 69.7°S, 153.8°E |
| Height | 835 km |
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