| Primary satellite | Secondary satellite |
| Name | GP-B | FENGYUN 1C DEB |
| Spacetrack catalog number | 28230 | 33721 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 12:03 | 2021 Jan 15 05:26 |
| Time of closest approach (UTC) | 2020 Dec 03 14:52:01.868 |
| Minimum distance | 135.810 km |
| Height difference | -4.825 km |
| Relative speed | 13.832 km/s |
| Angle between velocity vectors | 133° |
| Geographic position | 76.8°N, 21.9°W |
| Height | 648 km |
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